SmartLine Second Phone Number vs Quo (formerly OpenPhone)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SmartLine Second Phone Number
Get a dedicated second phone number for your business to maintain privacy and professionalism. This app ensures calls are business-related, offers a spam filter, custom voicemail, and voicemail-to-text transcription. Manage your business communications efficiently with organized history and timely notifications.
- Dedicated business phone number
- Professional call quality (not VoIP)
- Spam call filtering
- Customizable voicemail greetings
- Voicemail to text transcription
- Set business hours for calls
- Organized call and text history
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SmartLine is a second phone number for your business. When you receive a call through SmartLine, you know it’s for business so you can answer professionally. When you call or text through SmartLine, customers see your new business phone number so your personal number stays private. - Professional Quality. Calls use your cellular connection – NOT VOIP – to give you the call clarity and reliability you need to sound professional. - Spam Call Filter. Answer calls with confidence because spam calls are sent directly to voicemail. - Custom Voicemail. Record a custom voicemail greeting to prompt callers to leave a message. - Voicemail to Text. Get your business voicemail automatically transcribed to text to save you time. - Set Business Hours. Choose when you’re available for business calls and send callers to voicemail after hours. - Stay Organized. See your conversation history of calls, texts, pictures, and voicemail, organized by contact. - Stay Notified. Be notified and follow up quickly whenever you have missed calls, voicemail messages, or texts. -- Terms -- An existing SmartLine subscription is required to use this app. Currently available in the US only. SmartLine will automatically renew via iTunes, unless you cancel 24 hours before the the end of the current billing period. Easily manage and cancel your SmartLine 2nd phone number at any time through your iTunes subscription settings. If you didn't purchase SmartLine through iTunes, you can manage your subscription through the GoDaddy website. Terms of use: https://www.godaddy.com/legal-agreements.aspx Privacy policy: https://www.godaddy.com/Agreements/Privacy.aspx
Quo (formerly OpenPhone)
This business communication platform integrates calls, texts, and customer data into a single system. It offers AI-powered call answering, flexible routing, and a mini CRM to enhance customer relationships and streamline operations for growing businesses.
- Integrated calls and texts
- Mini CRM with customer notes
- AI-powered 24/7 call answering
- Shared inboxes for team visibility
- Flexible call routing
- Customizable contact properties
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Never lose a customer with Quo. The only phone system that helps businesses continue to build personal customer relationships at scale. Trusted by more than 90,000 companies — from fast-growing startups to Fortune 500s — and rated #1 in customer satisfaction on G2. Quo brings calls, texts, and customer information together in one platform. Bring clarity to every conversation. Shared inboxes, internal notes, and a mini CRM, gives every teammate the visibility and context they need to make sure each customer doesn't get missed. Respond to every customer. Fast. Built-in AI answers calls 24/7, flexible call flows route customers instantly, and custom contact properties ensure you're there when your customer needs you, while never missing a detail. Scale effortlessly as you grow. From your first customer to your thousandth, Quo adapts with you. No complex setup, no additional training, no growing pains. With Quo, it’s never been easier to close more deals, support more customers, and grow your business — without losing the human touch. Terms of use: https://www.quo.com/terms Privacy policy: https://www.quo.com/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: SmartLine Second Phone Number at none against Quo (formerly OpenPhone)'s 5. SmartLine Second Phone Number also leads on rating (4.7 vs 4.4) and ratings volume (44K vs 11K). Quo (formerly OpenPhone)'s advantage is update cadence (every 9 days vs every 2 months) and review sentiment (34% vs 15%). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Quo (formerly OpenPhone) sells 5 in-app purchases, starting at $21.00 per month. SmartLine Second Phone Number asks for nothing beyond the download.
SmartLine Second Phone Number holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 44K and 11K respectively. Written reviews complicate that: 15% of SmartLine Second Phone Number's written reviews are positive against 34% of Quo (formerly OpenPhone)'s, so the app with the better star average is not the one people write more warmly about.
SmartLine Second Phone Number ships an update every 2 months, Quo (formerly OpenPhone) every 9 days. Both last shipped on November 4, 2026.
| Parameter | SmartLine Second Phone Number | Quo (formerly OpenPhone) |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (44K ratings) — better | 4.4 (11K ratings) |
| Positive reviews | 15.5% of reviews | 33.7% of reviews — better |
| Number of ratings | 44K — better | 11K |
| Update frequency | Every 2 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Subscription | Free with in-app purchases — better |
| Best chart rank | — | #52 — better |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.1 — better | 16.0 |
| Further details — not scored | ||
| Size | 75 MB | 139 MB |
| Age rating | 4+ | 4+ |
| Developer | GoDaddy.com, LLC | OpenPhone Technologies Inc |
Customer experience
SmartLine Second Phone Number
Quo (formerly OpenPhone)
User reviews
SmartLine Second Phone Number
From 44K App Store ratingsWhat we love
- 🚀 Convenient business line
- 📝 Stores call/text history
- ⏱️ Ability to set business hours
Room to improve
- 🐛 Unreliable text messaging
- 📞 Missed/dropped calls
- 🔔 Delayed/missing notifications
- 🤖 Poor customer support
Quo (formerly OpenPhone)
From 11K App Store ratingsWhat we love
- 🚀 Great phone
- 👍 Fantastic App
- 👍 Great app!
- 👍 Great service
- 👍 Amazing!
Room to improve
- 🔇 Unable to mute individual numbers
- 🐛 SMS notifications don't alert sometimes
- 🔒 Forced to let AI read all of our messages
- 🔒 Scam
- 🔒 Complex Registration
Bugs and requests
SmartLine Second Phone Number
Reported bugs
3 issues- Disappearing call/text history
- Incorrect number display on outgoing calls
- Failure to sync across devices
Requested features
4 requests- Ability to send multiple photos/files
- Improved caller ID display
- Option to have multiple voicemail greetings
- Compatibility with VPNs and older devices
Quo (formerly OpenPhone)
Reported bugs
20 issues- Messages don't always appear
- Does Not Work for SMS Verification
- Bad connection
- OTP malfunction
- Issues with calls showing as scam
Show 15 moreShow fewer
- Muffled sound quality
- Incorrect notifications
- Calls not ringing or going to voicemail
- Texts not sending
- Dropped calls
- Syncing issues with contacts
- Delayed notifications
- Ringtone issues
- Billing issues
- Account blocking
- Porting issues
- Inability to delete messages
- Call quality issues
- Number showing as spam
- Inability to search messages by number
Requested features
5 requests- Make it Conference Call option
- Custom Notification Tones
- Transfer Call & 3 Way
- Dark mode option
- Advanced analytics dashboard
In-app purchases
SmartLine Second Phone Number
No in-app purchases
Quo (formerly OpenPhone)
- Starter Plan7 Days trial$21.001 Month
- Starter Plan - 2 Numbers$26.001 Month
- Starter Plan - 3 Numbers$31.001 Month
Show 2 moreShow fewer
- Starter Plan - 4 Numbers$51.991 Month
- Starter Plan - 5 Numbers$64.991 Month
Questions
Is SmartLine Second Phone Number free?
Is Quo (formerly OpenPhone) free?
Which has better reviews, SmartLine Second Phone Number or Quo (formerly OpenPhone)?
Do SmartLine Second Phone Number or Quo (formerly OpenPhone) have ads?
Which is updated more often, SmartLine Second Phone Number or Quo (formerly OpenPhone)?
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