# ZT vs Телематика. Умный дом

The clearest difference is rating: Телематика. Умный дом at 5.0 against ZT's 4.7. ZT's advantage is ratings volume (280 vs 10) and update cadence (every 3 weeks vs every 2 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Телематика. Умный дом holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: ZT has 280 ratings behind it against 10, so its average is the more settled of the two.

ZT ships an update every 3 weeks, Телематика. Умный дом every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | ZT | Телематика. Умный дом |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (280 ratings)](https://appshunter.io/ios/app/zt/id1214656147/reviews) | **[5.0 (10 ratings)](https://appshunter.io/ios/app/id6557057741/reviews)** |
| Number of ratings | **280** | 10 |
| Positive reviews | 19.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 121 MB | 199 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [ZTK, OOO](https://appshunter.io/developer/1577726159) | [Telematika OOO](https://appshunter.io/developer/1052587016) |

## 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


### Телематика. Умный дом

[App page](https://appshunter.io/ios/app/id6557057741)

Manage your smart home devices, including intercoms and cameras, from a single application. Unlock doors with facial recognition or via the app, receive video calls, and review call history. Access live feeds and recorded footage from your security cameras.

**Highlights:** Facial recognition door entry, App-based door unlocking, Video calls to smartphone, Intercom call history, Shared access for family, Online camera viewing, Recorded footage archive

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ZT free?

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

### Is Телематика. Умный дом free?

Телематика. Умный дом is free to download, with no in-app purchases.

### Which has better reviews, ZT or Телематика. Умный дом?

Телематика. Умный дом is rated higher. ZT averages 4.7 out of 5 from 280 ratings, while Телематика. Умный дом averages 5.0 from 10 ratings.

### Do ZT or Телематика. Умный дом have ads?

Neither ZT nor Телематика. Умный дом shows ads.

### Which is updated more often, ZT or Телематика. Умный дом?

ZT ships an update every 3 weeks, and Телематика. Умный дом every 2 months. Most recently, ZT was updated on October 24, 2026 and Телематика. Умный дом on October 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.*