# NextivaONE vs SmartLine Second Phone Number

The clearest difference is rating: SmartLine Second Phone Number at 4.7 against NextivaONE's 4.2. SmartLine Second Phone Number also leads on ratings volume (44K vs 7.1K) and iOS requirement (12.1 vs 18.0). NextivaONE's advantage is in-app purchases (none vs 2) and update cadence (every 3 weeks vs every 2 months). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. SmartLine Second Phone Number sells 2 in-app purchases, starting at $12.99 per month. NextivaONE asks for nothing beyond the download.

SmartLine Second Phone Number holds the better App Store score, 4.7 against 4.2. That said, the two scores are not equally well evidenced: SmartLine Second Phone Number has 44K ratings behind it against 7.1K, so its average is the more settled of the two. Written reviews point the same way: 13% of NextivaONE's written reviews are positive against 15% of SmartLine Second Phone Number's.

NextivaONE ships an update every 3 weeks, SmartLine Second Phone Number every 2 months. The most recent releases landed on September 20, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | NextivaONE | SmartLine Second Phone Number |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (7.1K ratings)](https://appshunter.io/ios/app/nextivaone/id738802901/reviews) | **[4.7 (44K ratings)](https://appshunter.io/ios/app/smartline-second-phone-number/id1161533637/reviews)** |
| Number of ratings | 7.1K | **44K** |
| Positive reviews | 13.0% of reviews | **15.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | **Free** | Subscription |
| Size | 136 MB | 75 MB |
| Requires iOS | 18.0 | **12.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nextiva](https://appshunter.io/developer/642559405) | [GoDaddy.com, LLC](https://appshunter.io/developer/333201816) |

## What reviewers say

### NextivaONE

[App page](https://appshunter.io/ios/app/nextivaone/id738802901)

Establish a professional presence with a dedicated business phone number for calls and texts. Manage contacts, send SMS/MMS, and enjoy unlimited voice calling within the US and Canada. Offers free number porting and local/toll-free numbers.

**Highlights:** Dedicated business phone number, Unlimited US/Canada calling, Mobile texting (SMS/MMS), Contact management, Business voicemail, Free number porting

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Ease of use
- 👍 Accessibility
- 🔒 Call quality

**What reviewers complain about**

- 🐛 Dropped calls
- 🐛 Missed notifications
- 🐛 Unreliable app performance
- 🐛 Buggy text messaging
- 🐛 Poor call transfer functionality

**Reported bugs**

- Calls not ringing on mobile device
- Inability to view voicemails and call history
- Frequent app crashes and freezes
- Sync issues between mobile and desktop apps

**Requested features**

- Improved call handling and management
- Enhanced text messaging capabilities
- Streamlined login and logout process
- Customizable app settings and defaults


### SmartLine Second Phone Number

[App page](https://appshunter.io/ios/app/smartline-second-phone-number/id1161533637)

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.

**Highlights:** 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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SmartLine Unlimited (Monthly) | $12.99 | per month |
| SmartLine Toll-Free | $19.99 | per month |

**What reviewers like**

- 🚀 Convenient business line
- 📝 Stores call/text history
- ⏱️ Ability to set business hours

**What reviewers complain about**

- 🐛 Unreliable text messaging
- 📞 Missed/dropped calls
- 🔔 Delayed/missing notifications
- 🤖 Poor customer support

**Reported bugs**

- Disappearing call/text history
- Incorrect number display on outgoing calls
- Failure to sync across devices

**Requested features**

- Ability to send multiple photos/files
- Improved caller ID display
- Option to have multiple voicemail greetings
- Compatibility with VPNs and older devices


## Frequently asked questions

### Is NextivaONE free?

NextivaONE is free to download, with no in-app purchases.

### Is SmartLine Second Phone Number free?

SmartLine Second Phone Number is free to download, with in-app purchases available.

### Which has better reviews, NextivaONE or SmartLine Second Phone Number?

SmartLine Second Phone Number is rated higher. NextivaONE averages 4.2 out of 5 from 7.1K ratings, while SmartLine Second Phone Number averages 4.7 from 44K ratings.

### Do NextivaONE or SmartLine Second Phone Number have ads?

Neither NextivaONE nor SmartLine Second Phone Number shows ads.

### Which is updated more often, NextivaONE or SmartLine Second Phone Number?

NextivaONE ships an update every 3 weeks, and SmartLine Second Phone Number every 2 months. Most recently, NextivaONE was updated on September 20, 2026 and SmartLine Second Phone Number on September 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*