# ZT vs SPACE

The clearest difference is rating: ZT at 4.6 against SPACE's 3.9. ZT also leads on ratings volume (212 vs 7). On price, update cadence, ads and in-app purchases there is nothing between them.

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

ZT holds the better App Store score, 4.6 against 3.9. That said, the two scores are not equally well evidenced: ZT has 212 ratings behind it against 7, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 16, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | ZT | SPACE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (212 ratings)](https://appshunter.io/ios/app/zt/id1214656147/reviews)** | [3.9 (7 ratings)](https://appshunter.io/ios/app/space/id1669428842/reviews) |
| Number of ratings | **212** | 7 |
| Positive reviews | 19.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | Free |
| Size | 121 MB | 93 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [ZTK, OOO](https://appshunter.io/developer/1577726159) | [EYUS BROKER, OOO](https://appshunter.io/developer/1639417797) |

## What reviewers say

### ZT

[App page](https://appshunter.io/ios/app/zt/id1214656147)

Connect with incarcerated individuals through a comprehensive mobile service. Send letters, photos, make audio/video calls, and transfer funds. Offers entertainment options like puzzles and games to enrich communication.

**Highlights:** Send electronic letters and photos, Make audio and video calls, Transfer money to inmate accounts, Add puzzles and games to letters, Instant printing at correctional facilities

**Features:** Vision Pro support

**In-app purchases:** none


### SPACE

[App page](https://appshunter.io/ios/app/space/id1669428842)

Connect with like-minded individuals for personal growth and inspiration. Discover events, join communities, and receive expert guidance in finance, health, and relationships.

**Highlights:** New acquaintances, Skill development support, Expert guidance, Local event listings, Interest-based communities

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ZT free?

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

### Is SPACE free?

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

### Which has better reviews, ZT or SPACE?

ZT is rated higher. ZT averages 4.6 out of 5 from 212 ratings, while SPACE averages 3.9 from 7 ratings.

### Do ZT or SPACE have ads?

Neither ZT nor SPACE shows ads.

### Which is updated more often, ZT or SPACE?

ZT ships an update every 3 weeks, and SPACE every 3 weeks. Most recently, ZT was updated on October 16, 2026 and SPACE on October 2, 2026.

---

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