Best Sideline Alternatives in 2026
Sideline is a straightforward second phone number app at $9.99/mo, but it hasn’t kept up. No AI, no caller ID verification, and no call recording — while just $5/mo more buys a business line with a full 24/7 AI receptionist. Here are the best Sideline alternatives.
By Graham Thomson · Updated July 2, 2026
Common Pain Points
Why people switch from Sideline
No AI features
Sideline is a basic second-line app. There’s no AI that makes calls for you, no smart transcription, and no automation — just a number, calling, and texting.
No STIR/SHAKEN verification
Sideline doesn’t market STIR/SHAKEN attestation on its outbound calls. If answer rates matter to you (and they should for business), this is a significant gap.
No call recording
Documenting customer conversations, verbal agreements, or training calls — Sideline doesn’t offer recording. Modern alternatives include it as standard.
Thin value for the price
At $9.99/mo, Sideline gives you a number, calling, and texting — nothing more. For $5/mo more, VeraDial ($14.99/mo) adds a 24/7 AI receptionist that answers your calls and texts, verified caller ID, call recording, and voicemail transcription.
Evaluation Criteria
What to look for in a Sideline alternative
Feature depth per dollar
Sideline charges $9.99/mo for a plain second line. Compare what a few dollars more buys elsewhere: an AI receptionist that answers calls and texts, verification, recording, voicemail transcription, and SMS.
AI outbound calling
A modern second line should do more than separate calls. Check whether the product can actually make routine calls on your behalf or only gives you another number to manage.
Verified caller ID
Business answer rates depend on trust. Prioritize providers that explain their STIR/SHAKEN posture and let you present a verified number when calling customers.
Call records and transcripts
If calls affect appointments, estimates, or follow-ups, call recording and transcripts matter. A basic second-line app leaves that documentation work on you.
Top Picks
The 6 best Sideline alternatives
VeraDial
Our PickBusiness line with a 24/7 AI receptionist, verified caller ID, and call recording.
Best for: Solopreneurs, freelancers, and small business owners who want a verified business number with an AI receptionist that answers calls and texts — plus AI that can make calls on their behalf.
Strengths
- Vera, the AI receptionist, answers inbound calls and texts 24/7 on every plan (unlimited, fair use)
- AI agent makes outbound calls for you with full transcripts (Vera Plus)
- Verified caller ID — register an existing number as your outbound ID (B-level attestation) or use a VeraDial number with A-level attestation
- STIR/SHAKEN A-level attestation on VeraDial numbers; B-level attestation when you verify an existing outbound caller ID
- Call recording on any call, plus voicemail transcription
Limitations
- No shared team numbers or built-in CRM
- No video conferencing or team messaging
Google Voice
Free second phone number from Google for calling, texting, and voicemail.
Best for: People who want a free second number within the Google ecosystem for personal or light business use.
Strengths
- Free for personal use
- Deep Google ecosystem integration (Calendar, Meet)
- Works across phone, web, and desktop
- Voicemail transcription included
Limitations
- No caller ID control — locked to assigned number
- No AI calling, no call recording on personal plan
- Requires a Google account
- Limited number selection
OpenPhone
Modern team phone system (now rebranded as Quo) with shared numbers and built-in CRM.
Best for: Small teams that need shared numbers, a built-in CRM, and collaborative inboxes.
Strengths
- Shared phone numbers across team members
- Built-in CRM with contact management
- AI call summaries and transcription
- Clean, modern interface
Limitations
- Per-seat pricing adds up quickly for teams
- No AI agent calling — AI only summarises, doesn’t make calls
- No caller ID control
Line2
Second phone number app for calling and texting, with desktop support.
Best for: Users who want a basic second line on mobile and desktop without needing AI or verification.
Strengths
- Available on mobile and desktop (Mac, Windows, web)
- Unlimited US/Canada calling
- Conference calling support
Limitations
- Calls frequently flagged as “Scam Likely” — no STIR/SHAKEN
- No AI features of any kind
- Reliability issues — dropped calls, delayed notifications
- No call recording on basic plans
TextNow
Free calling and texting app supported by ads.
Best for: Budget-conscious users who want a free second number and don’t mind ads.
Strengths
- Free tier with calling and texting
- Available on iOS, Android, and web
- Wi-Fi calling included
Limitations
- Ad-supported — ads in the app experience
- No business features, no AI, no call recording
- Numbers can be recycled if inactive
- Not suitable for professional use
Burner
Disposable phone numbers you can throw away when you're done.
Best for: Users who need short-term, disposable numbers for privacy or one-off projects.
Strengths
- Short-term disposable numbers designed to be thrown away
- Multiple active numbers with simple switching
- Affordable starting tier
- iOS and Android apps with clean UX
Limitations
- No STIR/SHAKEN — outbound calls often flagged as spam
- No AI calling, no smart transcription
- Not intended for long-term business use
- Numbers can be recycled after expiry
Quick Recommendations
Which Sideline alternative is right for you?
Upgrading from Sideline for $5/mo more
VeraDial
For $5/mo more, VeraDial adds a 24/7 AI receptionist, verified caller ID, call recording, and voicemail transcription. The obvious upgrade.
Free second personal number
Google Voice
Free personal tier is the best option if you’re in the Google ecosystem and don’t need business features.
Small team with shared numbers
OpenPhone
Built for small teams with shared inboxes, CRM, and collaborative workflows — a natural step up from a solo second-line app.
Desktop + mobile sync needed
Line2
If you need a desktop client alongside mobile, Line2 has Mac, Windows, and web apps.
Try the #1 Pick
An AI receptionist that gets results.
VeraDial gives you a 24/7 AI receptionist that answers calls and texts, verified caller ID, call recording, and transcription — starting at $14.99/mo with a 7-day free trial.
Hear Vera in action.
Play a short sample call, follow the transcript, and move into a personalized live demo when you're ready.
Information based on publicly available data as of July 2026. Pricing and features may change. We recommend verifying current details on each provider's website.