# BTKey.ru vs Otens

The clearest difference is update cadence: Otens at every 2 weeks against BTKey.ru's every 3 months. BTKey.ru's advantage is iOS requirement (11.0 vs 15.6). 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.

BTKey.ru ships an update every 3 months, Otens every 2 weeks. The most recent releases landed on October 10, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | BTKey.ru | Otens |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 14 MB | 128 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mikhail Strogonov](https://appshunter.io/developer/1540566509) | [Artem Shchurev](https://appshunter.io/developer/1651375605) |

## What reviewers say

### BTKey.ru

[App page](https://appshunter.io/ios/app/btkeyru/id1540566507)

Control standard electric locks, gates, barriers, or intercoms remotely using a universal Bluetooth module. Grant temporary or permanent access to other users. Manage multiple modules from a single application.

**Highlights:** Remote control of electric locks, Grant temporary or permanent access, Manage multiple Bluetooth modules, No internet or SIM card required, Bluetooth Low Energy connectivity

**Features:** macOS Compatibility

**In-app purchases:** none


### Otens

[App page](https://appshunter.io/ios/app/otens/id6444003491)

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

**In-app purchases:** none


## Frequently asked questions

### Is BTKey.ru free?

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

### Is Otens free?

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

### Do BTKey.ru or Otens have ads?

Neither BTKey.ru nor Otens shows ads.

### Which is updated more often, BTKey.ru or Otens?

BTKey.ru ships an update every 3 months, and Otens every 2 weeks. Most recently, BTKey.ru was updated on October 10, 2026 and Otens on October 27, 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.*