Ghost vs Burner vs Sideline: Best Second Number App for Business

Business owners, freelancers, and side-hustlers face a recurring dilemma: clients and customers expect SMS responsiveness, but giving out your personal mobile erodes boundaries fast. Ghost, Burner, and Sideline each offer a way to separate business from personal communication — but through radically different models. This business-focused comparison covers SMS, calls, voicemail, team features, scheduling, and pricing so you can pick the right second-number strategy for your workflow.

The Business Communication Problem

Modern business communication happens on SMS. Clients text asking about project status. Customers text about order pickup. Prospects text after finding you on Google. The expectation of quick, personal, text-based responsiveness is universal — but the cost of meeting that expectation with your personal mobile number is boundary erosion, after-hours interruptions, and a contacts list full of people who should not have permanent access to you.

Traditional solutions — a dedicated business phone, a separate device, a carrier business line — work but add cost, complexity, and another device to manage. App-based alternatives promise separation without the hardware overhead. But "business second line app" describes three very different products.

Ghost masks your real number when you send business SMS. Clients never see your personal mobile. Pay per message, no subscription.

Burner gives you disposable subscription phone numbers with calling and texting. Burn a line when a project ends.

Sideline provides a professional second line designed for small business — with voicemail, auto-replies, team sharing, and business hours settings.

This comparison is honest about what each tool does well and where it falls short. Ghost is not a full business phone system. Sideline is not a number masking tool. Burner is not built for teams. Choosing the right one — or combining them — depends on your specific business communication needs.

Read our business anonymous SMS guide for Ghost-specific workflow setup, and visit /business for use-case overview.

Ghost for Business: Masked SMS, Pay-As-You-Go

Ghost approaches business communication from the identity protection angle. Your real phone number never reaches clients, prospects, or customers. You send professional SMS through masked sender IDs — recipients see a protected contact, not your personal mobile.

Business strengths:

• Number masking — personal mobile stays permanently hidden
• Pay-as-you-go — $1/5 credits, $4/20, $10/50 (20¢ per SMS); no monthly subscription
• Credits never expire — no pressure during slow months
• Reply Links — clients respond without learning your real number
• Message scheduling — send follow-ups and reminders at business hours
• 100+ countries — international client SMS without extra plans
• Clean project endings — when the engagement ends, clients have no persistent number

Business limitations:

• SMS only — no voice calls, no voicemail, no call screening
• No team features — individual sender, not a shared business inbox
• No business caller ID — masked sender IDs, not a branded business number
• Not encrypted — identity protection, not content encryption
• No auto-reply — scheduling yes, automated response workflows no

Ghost fits solo freelancers, consultants, contractors, and small business owners whose primary business communication need is outbound and two-way SMS without exposing their personal number. Real estate agents texting prospects, marketplace sellers coordinating pickup, consultants updating clients — these are ideal Ghost business use cases.

For setup guidance, see freelance anonymous SMS setup and /freelance-privacy.

Burner for Business: Disposable Subscription Lines

Burner provides real phone numbers on subscription plans — typically one to three lines depending on tier. Recipients call and text your Burner number directly. When a project or client relationship ends, you burn the number and start fresh.

Business strengths:

• Real callable number — clients can call and text your business line
• Voicemail on supported plans
• Number disposal — burn and replace compromised or expired lines
• Multiple lines on higher tiers for separating clients or projects
• Auto-reply on some plans
• Established privacy brand with business user base

Business limitations:

• Subscription required — ~$4.99–$9.99/month per line regardless of usage
• Not number masking — clients interact with your Burner number, not a masked personal line
• No team sharing — individual lines, not collaborative inboxes
• US/Canada focus — limited international business use
• Ongoing cost during idle months — subscription continues even when you are not actively using the line

Burner fits project-based businesses that want a dedicated callable line for the duration of an engagement — a freelance developer with a three-month contract, a property manager for a specific building, a event organizer for a season. The burn-and-replace model provides a clean reset between projects.

Sideline for Business: Professional Second Line

Sideline is purpose-built for small business telephony. It provides a professional second line with business-oriented features that Ghost and Burner do not offer.

Business strengths:

• Full business line — calls, SMS, voicemail, call screening
• Team plans — multiple team members share business lines
• Auto-replies — set automatic text responses for business hours, after hours, and vacations
• Business hours settings — calls and texts handled differently inside/outside hours
• Professional voicemail with custom greetings
• Number porting — bring an existing business number
• Separate business contacts — organized within the Sideline app

Business limitations:

• Subscription required — typically ~$9.99–$14.99/month per line
• Not number masking — your Sideline number is a real, saveable business line
• Personal number may still be visible depending on configuration
• Higher cost than pay-as-you-go for light SMS users
• Primarily US-focused

Sideline fits established small businesses, teams, and professionals who need a full business phone identity — not just SMS — with features like team sharing, auto-replies, and professional voicemail. A growing consultancy, a small retail operation, a service business with multiple technicians — these are Sideline's sweet spot.

Business Feature Comparison

Feature availability based on public product information as of early 2026. Verify current plans on each provider's website.

Business Pricing Comparison

Prices as of early 2026. Burner and Sideline subscription pricing varies by plan tier. Ghost at 20¢/SMS. Verify current pricing before purchasing.

Reading business pricing

Ghost is cheapest for SMS-only businesses with variable volume. Slow months cost nothing beyond idle credits. Active months scale linearly at 20¢ per message.

Burner is cost-effective for SMS-heavy solo users who also need calling — flat subscription beats pay-per-message above ~50 texts/month if the plan includes unlimited SMS.

Sideline costs more but delivers more — calls, voicemail, team features, auto-replies. For businesses that would otherwise need a separate business phone plan, Sideline's subscription replaces a larger expense.

See /affordable-sms for Ghost pricing details.

SMS Capabilities Compared

All three apps handle business SMS — but differently.

Ghost SMS: Outbound masked messages from your existing phone. Reply Links enable inbound responses without number exchange. Scheduling supports timed follow-ups ("Your order is ready for pickup at 3 PM"). No persistent business number — by design. Best when clients should not retain your contact information after the engagement.

Burner SMS: Standard two-way SMS on your Burner number. Clients text your business line directly. Conversation history lives in the Burner app. Number persists as long as you subscribe. Best when you want a dedicated textable business line for an ongoing period.

Sideline SMS: Full two-way business SMS with auto-replies, business hours awareness, and team visibility on shared lines. Clients text your Sideline business number. Best when SMS is part of a broader business telephony setup with multiple team members.

For two-way anonymous workflows specifically, read our two-way anonymous texting guide.

Calls and Voicemail

If your business requires phone calls — not just texts — this section is decisive.

Ghost: No calling capability. SMS only. If a client needs to call you, Ghost alone cannot facilitate that. Many Ghost business users pair it with another solution for calls (Google Voice, Sideline, or their carrier's business line).

Burner: Calling included on most subscription plans. Voicemail available. Clients can call your Burner number during the subscription period. Acceptable for solo professionals who need basic call capability without Sideline's business feature depth.

Sideline: Full business calling with call screening, custom voicemail greetings, business hours routing, and team call handling. The strongest option for businesses where phone calls are a primary communication channel.

If calls are essential, Sideline or Burner wins over Ghost. If SMS is your primary business channel and calls are rare, Ghost's masking advantage may outweigh the calling gap.

Teams and Collaboration

Ghost: Individual tool. No team inbox, no shared numbers, no role-based access. Each team member would use their own Ghost account for masked outbound SMS.

Burner: Individual lines. Higher tiers offer multiple numbers but not collaborative team inboxes. Each line is tied to one user's account.

Sideline: Team plans allow multiple employees to share business lines, see conversation history, and handle customer texts and calls collaboratively. The only option of the three for small teams needing shared business communication.

For solo freelancers, this distinction does not matter. For a three-person service business, Sideline is the clear choice if team SMS and call handling are requirements.

Scheduling and Automation

Ghost scheduling: Compose a message now, send it later. Useful for appointment reminders, follow-up sequences, and time-zone-aware client communication. Manual scheduling — not automated workflow triggers.

Burner automation: Limited auto-reply on some plans. No advanced scheduling or workflow automation.

Sideline automation: Auto-replies based on business hours, vacation modes, and keyword triggers. Closest to a lightweight business communication automation platform among the three.

None of these replace a full CRM or marketing automation platform. For simple "send this reminder at 9 AM Tuesday" needs, Ghost's scheduling is sufficient and included without a subscription.

Professional Boundaries

The deepest business value of these tools is boundary management — and each achieves it differently.

Ghost boundaries: Clients never receive your personal number. When a project ends, there is no number to text at midnight six months later. The boundary is structural, not behavioral — you do not need to ignore texts because clients never had access in the first place.

Burner boundaries: Clients contact your Burner line, not your personal phone. The boundary holds as long as you maintain the subscription and do not give out your personal number separately. Burning the number provides a hard reset between projects.

Sideline boundaries: Business calls and texts route to Sideline, keeping your personal phone separate. Business hours settings enforce time boundaries automatically. Team features prevent any single employee's personal number from becoming the business contact.

For freelancers who have already experienced the "client texting my personal phone at 10 PM" problem, Ghost's structural boundary is the most complete solution for SMS. For businesses needing calls too, Sideline's business hours automation provides the most comprehensive boundary enforcement.

Read about signs you should stop sharing your real number if boundary erosion sounds familiar.

Use Case Scenarios

Solo freelance consultant (SMS-primary)

Recommendation: Ghost. Send masked project updates, use Reply Links for client questions, schedule follow-ups. Pay ~$4–10/month based on volume. No subscription during between-project gaps. See /freelance-privacy.

Real estate agent (calls + SMS)

Recommendation: Sideline for the full business line, optionally Ghost for initial prospect outreach where you want zero personal number exposure. See real estate agent privacy guide.

Marketplace side hustle (occasional selling)

Recommendation: Ghost. Pay per sale, not per month. Mask your number for each buyer interaction. See /marketplace-safety.

Three-person home services company

Recommendation: Sideline team plan. Shared business line, call screening, auto-replies for "we'll respond during business hours," team SMS visibility.

Short-term contract project (3 months, needs calls)

Recommendation: Burner. Dedicated line for the project duration. Burn the number when the contract ends.

International freelance clients

Recommendation: Ghost. 100+ country SMS coverage without international plan surcharges.

Combining Tools for Full Coverage

Many business users combine tools rather than choosing one:

Ghost + Google Voice: Ghost for masked stranger and client SMS. Google Voice for free US calling and voicemail. Total cost: pay-as-you-go SMS only.

Ghost + Sideline: Ghost for outbound anonymous prospect contact where you want zero number exposure. Sideline for established client relationships requiring calls, voicemail, and team access.

Burner alone: Sufficient for solo professionals needing one disposable line with both SMS and calling for project-based work.

The combination approach often costs less than Sideline alone while providing stronger identity protection for initial contact through Ghost.

Month-by-Month Business Cost Scenarios

Understanding real business costs requires modeling actual months — busy, slow, and average.

Solo consultant: variable project load

Month	SMS volume	Ghost cost	Burner cost	Sideline cost
Slow (between projects)	5	$1	$4.99	$9.99
Active (one client)	40	$8	$4.99	$9.99
Very active (two clients)	90	$18	$4.99	$9.99
6-month total	~200	~$40	~$30	~$60

Ghost wins in slow months ($0 beyond idle credits vs fixed subscriptions). Burner wins if the consultant also needs calling during active months at flat rate. Sideline costs most but adds voicemail, call screening, and professional features.

Three-person cleaning service

Need	Ghost	Burner	Sideline
Customer SMS scheduling	Partial (outbound only)	Yes	Yes with auto-reply
Customer calls	No	Yes	Yes with screening
Team inbox	No	No	Yes
After-hours boundary	No	No	Yes (business hours)
Monthly cost	~$10–20	~$10	~$30+

Sideline is the only viable option for team call and SMS handling. Ghost supplements for owner outreach where personal number masking matters.

Marketplace side hustle (5 sales/month)

Ghost: ~15 credits/month = $3/month. No subscription waste during months you do not sell.

Burner: $4.99/month even in zero-sale months.

Sideline: $9.99/month — overkill for occasional selling.

Ghost wins decisively for intermittent business SMS. See /marketplace-safety.

Industry-Specific Recommendations

Real estate agents: Initial prospect outreach via Ghost (masked, no personal number exposure). Established client relationships via Sideline (calls, voicemail, professional identity). See real estate agent privacy guide.

Home services (plumbing, electrical, HVAC): Sideline for team dispatch, customer calls, and after-hours auto-replies. Ghost for one-off quote requests where you want zero personal number exposure before qualifying the lead.

Creative freelancers (design, writing, photography): Ghost for project SMS throughout engagement. Client never receives personal number. Project ends; contact path closes. See /freelance-privacy.

Event and wedding vendors: Burner for event-season dedicated line (burn after season) or Hushed 90-day number. Ghost for individual vendor coordination where persistent contact is undesirable.

E-commerce and product sellers: Ghost for buyer SMS coordination. Lowest cost for variable volume. Reply Links for order status questions.

Healthcare-adjacent services (not HIPAA-covered): Sideline for professional business line with voicemail. Ghost is not HIPAA-compliant — do not use any of these apps for protected health information.

Scaling from Solo to Team

Many businesses start solo and add team members later. Your tool choice should anticipate this transition.

Start solo with Ghost if SMS is your primary channel and you want maximum personal number protection at minimum cost. As you hire, add Sideline for team telephony while keeping Ghost for owner-initiated masked outreach.

Start solo with Burner if you need calling from day one on a budget. Upgrade to Sideline when team sharing becomes necessary — Burner does not scale to multi-user inboxes.

Start with Sideline immediately if you know you are building a team within six months. Avoiding tool migration saves setup time and customer confusion from number changes.

The most expensive mistake is giving clients your personal mobile during the solo phase, then trying to migrate them to a business line later. They already have your number. Start with separation from day one — Ghost for masked SMS, or a business line from the beginning.

What Your Clients Experience

Your tool choice affects client perception, not just your privacy.

Ghost (masked SMS): Clients receive a professional text from an unrecognized sender ID. If you include a Reply Link, they respond through a simple web interface. They cannot save your number or call you unexpectedly. This feels slightly less "personal" but significantly more controlled — appropriate for initial contact and project-based work.

Burner: Clients text and call a normal phone number. Experience is identical to any business mobile — they save the contact and reach you freely. Professional and familiar, but they retain permanent access.

Sideline: Clients interact with a polished business line — custom voicemail, auto-replies during off-hours, potential team member responses. Most professionally presented option. Clients expect and receive standard business telephony.

Match client experience to relationship type. Prospects and strangers deserve masked contact (Ghost). Established clients may warrant a callable business line (Sideline or Burner).

Read our business anonymous SMS guide for client communication templates and best practices. Compare consumer-focused alternatives in Ghost vs TextNow vs Burner if you are evaluating whether business telephony needs overlap with personal privacy tools.

Burner vs Sideline: Head-to-Head for Business

Since Ghost is SMS-only, many business users ultimately choose between Burner and Sideline for full telephony. Here is a direct comparison.

Burner advantages: Lower entry price (~$4.99/month). Disposable numbers you can burn between projects. Simpler interface for individual users. Good for short-term dedicated lines.

Sideline advantages: Professional voicemail with custom greetings. Business hours and auto-reply automation. Team plans with shared inboxes. Call screening. Number porting for existing business numbers. Designed for ongoing business identity, not disposable lines.

When Burner beats Sideline: Solo user, project-based work, budget priority, need to destroy a number after a engagement ends.

When Sideline beats Burner: Ongoing business, team members, professional customer experience, after-hours boundary automation, call screening requirements.

When Ghost beats both: SMS-only communication where your real personal number must stay hidden. Initial prospect outreach. International client texting. Variable volume with no subscription.

None replaces the others entirely — they occupy different positions in a business communication stack.

Implementation Checklist for Business Users

Switching to proper business communication separation takes one afternoon. Follow this sequence:

1. Identify your channels. List every situation where you currently give out your personal number for business. Marketplace, clients, prospects, vendors, networking — write them all down.

2. Categorize by need. SMS-only vs needs calling. One-time vs ongoing. Solo vs team. International vs domestic.

3. Assign tools. Ghost for masked SMS needs. Sideline or Burner for calling needs. Google Voice as free US supplement if appropriate.

4. Update templates. Prepare standard messages for client outreach, buyer coordination, and prospect follow-up that do not reference your personal number.

5. Test before going live. Send test messages via Ghost at /free. Verify Reply Links work. Confirm Sideline/Burner voicemail greetings sound professional.

6. Communicate the change. Tell existing clients your new business contact method. For new contacts, never share your personal number from day one.

7. Review quarterly. Assess volume, cost, and whether your tool mix still fits. Solo freelancers who hire their first employee often need to add Sideline team features.

See /faq for common Ghost questions and /features for the full Ghost capability list.

The Bottom Line on Business Privacy

Business communication privacy is not about hiding from clients — it is about maintaining professional boundaries that keep your business sustainable and your personal life intact.

Ghost protects the one asset no business line app can protect: your actual personal mobile number. Burner and Sideline protect your personal phone from ringing with business calls — genuine separation, but clients still receive a saveable number.

The strongest business communication strategy for most solo professionals: Ghost for outbound masked SMS and stranger contact, plus Sideline or Google Voice for inbound calling if needed. Total cost often under $15/month with maximum identity protection.

Read signs you should stop sharing your real number if you are still giving clients your personal mobile out of habit.

Frequently Asked Business Scenarios

"I am a Uber/Lyft driver. Which app?" Ghost for passenger SMS coordination where you want zero personal number exposure on short rides. Sideline if you want a dedicated driver business line with voicemail for lost-item callbacks.

"I run an Etsy shop with 10 orders/week." Ghost for buyer SMS at ~20 credits/week ($4/week, $16/month). Far cheaper than Sideline and buyers never retain your personal number. Reply Links handle "where is my order" questions.

"I am a therapist in private practice." None of these apps for client communication — use HIPAA-compliant platforms. Ghost explicitly does not provide HIPAA compliance. Sideline and Burner similarly lack healthcare compliance certifications.

"I am hiring and need to text candidates." Ghost for initial outreach where candidates should not have your personal mobile. Sideline for ongoing recruiter lines with team access if you have a dedicated recruiting function.

"I am a landlord with three properties." Sideline for tenant business line with voicemail and business hours. Ghost for initial tenant inquiries before lease signing when you want zero personal exposure to unqualified applicants.

"I sell at farmers markets on weekends." Ghost for buyer text coordination. ~$2–4 per market day. No subscription for the weeks you are not selling.

These scenarios illustrate that business tool choice is situational. The comparison tables above give you the framework; these scenarios give you the pattern-matching.

Compare related consumer tools in Ghost vs Google Voice vs Hushed if your business needs overlap with personal privacy requirements.

Final Thoughts: Business Privacy Starts With Your Personal Number

Every business communication tool comparison eventually returns to the same insight: your personal mobile number is not a business asset. It is a private credential that becomes harder to protect with every client, customer, and prospect who saves it.

Ghost, Burner, and Sideline each offer legitimate paths to professional separation. Ghost protects what the others cannot — your actual personal number. Burner and Sideline protect what Ghost cannot — your time, through calling features, voicemail, and team workflows.

The business users who struggle most are not those who chose the wrong app. They are those who never chose any app — who gave their personal number to every client for years and now cannot unwind the access. Do not become that person. Pick a tool this week. Test it on your next client interaction. Build the habit before the next stranger asks for your number.

Your future self — the one without a contacts list full of "Craigslist buyer 2024" entries — will thank you for making business communication separation a default, not a crisis response. Start with Ghost for masked SMS at /business, add Sideline when your team grows, and never hand a client your personal mobile again.

The Verdict for Business Users

Business need	Best choice
Hide personal number on business SMS	Ghost
SMS + calls on a budget	Burner
Full business line with team features	Sideline
Variable SMS volume, no subscription	Ghost
Professional voicemail + call screening	Sideline
Project-based disposable line	Burner
International client SMS	Ghost
Team shared business inbox	Sideline
Message scheduling	Ghost
Auto-reply during business hours	Sideline
Lowest cost for occasional SMS	Ghost

There is no single winner — there is the right tool for your business communication profile. Ghost excels at the identity protection problem that starts most business users searching for a second-number app. Burner and Sideline excel at the telephony features Ghost deliberately does not offer.

Start by identifying your primary channel (SMS vs calls), your volume (occasional vs daily), and your team size (solo vs multi-person). Then match to the tool — or combination — that covers your requirements at the lowest appropriate cost.

Visit /business for Ghost business use cases, /affordable-sms for pricing, and /faq for common questions. Read /how-ghost-protects-privacy to understand what Ghost does and does not protect in business contexts.

Frequently Asked Questions