# Unity vs String

The clearest difference is rating: Unity at 5.0 against String's 3.5. Unity also leads on monetization model (free vs free with in-app purchases) and iOS requirement (12.0 vs 15.0). String's advantage is ratings volume (62 vs 2) and update cadence (every 2 months vs every 3 months). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Unity holds the better App Store score, 5.0 against 3.5. That said, the two scores are not equally well evidenced: String has 62 ratings behind it against 2, so its average is the more settled of the two.

Unity ships an update every 3 months, String every 2 months. The most recent releases landed on September 10, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Unity | String |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/unity-mobile/id1039766493/reviews)** | [3.5 (62 ratings)](https://appshunter.io/ios/app/string-modern-phone-inbox/id1445655431/reviews) |
| Number of ratings | 2 | **62** |
| Positive reviews | — | 68.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 17 MB | 68 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Kakapo Systems Ltd](https://appshunter.io/developer/1039766492) | [NumberBarn, LLC](https://appshunter.io/developer/1031383867) |

## What reviewers say

### Unity

[App page](https://appshunter.io/ios/app/unity-mobile/id1039766493)

This business communication app extends call control, visual voicemail, and instant messaging to your mobile device. It offers a unified "one number" solution, masking your cellular number for professional calls. Manage your VoIP environment, check user availability, and communicate with colleagues seamlessly.

**Highlights:** Call control (hold, transfer, conference, record), Visual voicemail, Directory integration, Busy Lamp Field status, Instant messaging and presence, Service configuration

**Features:** macOS Compatibility

**In-app purchases:** none


### String

[App page](https://appshunter.io/ios/app/string-modern-phone-inbox/id1445655431)

Enhance customer engagement with a business SMS and voice platform. Organize your inbox, automate responses, and manage contacts efficiently. Send personalized messages to individuals or groups, and access your workflow from any device.

**Highlights:** Use existing or new phone numbers, Organize inbox with sales funnel view, Automated responses and auto-replies, Contact management and CRM integrations, 1-1, group, and mass messaging, Templates and voicemail transcription, Browser and mobile app access

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

**In-app purchases:** none


## Frequently asked questions

### Is Unity free?

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

### Is String free?

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

### Which has better reviews, Unity or String?

Unity is rated higher. Unity averages 5.0 out of 5 from 2 ratings, while String averages 3.5 from 62 ratings.

### Do Unity or String have ads?

Neither Unity nor String shows ads.

### Which is updated more often, Unity or String?

Unity ships an update every 3 months, and String every 2 months. Most recently, Unity was updated on September 10, 2026 and String on October 14, 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.*