# SmartLine Second Phone Number vs Second Phone Number²

The clearest difference is in-app purchases: SmartLine Second Phone Number at none against Second Phone Number²'s 10. SmartLine Second Phone Number also leads on ratings volume (44K vs 7) and rating (4.7 vs 4.4). Second Phone Number²'s advantage is update cadence (weekly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Second Phone Number² sells 10 in-app purchases, starting at $5.99 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. That said, the two scores are not equally well evidenced: SmartLine Second Phone Number has 44K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 15% of SmartLine Second Phone Number's written reviews are positive against 0% of Second Phone Number²'s.

SmartLine Second Phone Number ships an update every 2 months, Second Phone Number² weekly. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | SmartLine Second Phone Number | Second Phone Number² |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (44K ratings)](https://appshunter.io/ios/app/smartline-second-phone-number/id1161533637/reviews)** | [4.4 (7 ratings)](https://appshunter.io/ios/app/second-phone-number/id6479579768/reviews) |
| Number of ratings | **44K** | 7 |
| Positive reviews | **15.5% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 75 MB | 19 MB |
| Requires iOS | **12.1** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [GoDaddy.com, LLC](https://appshunter.io/developer/333201816) | [Appios Bilisim](https://appshunter.io/developer/1796567865) |

## What reviewers say

### 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:** none

**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


### Second Phone Number²

[App page](https://appshunter.io/ios/app/second-phone-number/id6479579768)

Obtain real, functional phone numbers with unlimited calling and texting. Ideal for an additional line, it offers numbers across 300+ US area codes and in over 20 countries globally, ensuring privacy for your primary number.

**Highlights:** Acquire local numbers globally, Unlimited calling and texting, Integrate with existing contacts, Call forwarding, WiFi or data access, No contracts or hidden fees

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1st Phone Number Monthly | $5.99 | per month |
| 2st Phone Number Monthly | $5.99 | per month |
| 2st Phone Number Monthly | $9.99 | per month |
| 1st Phone Number Monthly | $9.99 | per month |
| 1st Phone Number Monthly | $14.99 | per month |
| 2st Phone Number Monthly | $14.99 | per month |
| 1st Phone Number Monthly | $19.99 | per month |
| 2st Phone Number Monthly | $19.99 | per month |
| 100 Credits | $2.99 | one-time |
| 500 Credits | $9.99 | one-time |


## Frequently asked questions

### Is SmartLine Second Phone Number free?

SmartLine Second Phone Number is free to download, with no in-app purchases.

### Is Second Phone Number² free?

Second Phone Number² is free to download, with in-app purchases available.

### Which has better reviews, SmartLine Second Phone Number or Second Phone Number²?

SmartLine Second Phone Number is rated higher. SmartLine Second Phone Number averages 4.7 out of 5 from 44K ratings, while Second Phone Number² averages 4.4 from 7 ratings.

### Do SmartLine Second Phone Number or Second Phone Number² have ads?

Neither SmartLine Second Phone Number nor Second Phone Number² shows ads.

### Which is updated more often, SmartLine Second Phone Number or Second Phone Number²?

SmartLine Second Phone Number ships an update every 2 months, and Second Phone Number² weekly. Most recently, SmartLine Second Phone Number was updated on November 4, 2026 and Second Phone Number² on October 30, 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.*