# Blue Switch vs BTKey.ru

The clearest difference is review sentiment: BTKey.ru at 100% against Blue Switch's 17%. BTKey.ru also leads on in-app purchases (none vs 1) and ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Blue Switch sells 1 one-off in-app purchase. BTKey.ru asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 months. Both last shipped on September 23, 2026.

## The numbers

| Metric | Blue Switch | BTKey.ru |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (43 ratings)](https://appshunter.io/ios/app/blue-switch/id828280876/reviews)** | — |
| Number of ratings | **43** | — |
| Positive reviews | 16.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 39 MB | 14 MB |
| Requires iOS | 18.0 | **11.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vitalij Schaefer](https://appshunter.io/developer/393749449) | [Mikhail Strogonov](https://appshunter.io/developer/1540566509) |

## What reviewers say

### Blue Switch

[App page](https://appshunter.io/ios/app/blue-switch/id828280876)

Control 2, 4, or 8 channel Bluetooth BLE relay modules from your iPhone or iPad. Assign custom names to modules and individual relays for easy identification and management. Enhance security by changing the default password.

**Highlights:** Control 2, 4, or 8 channel relay modules, Bluetooth BLE connectivity, Assign custom module aliases, Assign custom relay aliases, Change default password for security, Connect to multiple modules

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $17.99 | one-time |


### 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


## Frequently asked questions

### Is Blue Switch free?

Blue Switch is free to download, with in-app purchases available.

### Is BTKey.ru free?

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

### Do Blue Switch or BTKey.ru have ads?

Blue Switch shows ads; BTKey.ru does not.

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

Blue Switch ships an update every 3 months, and BTKey.ru every 3 months. Most recently, Blue Switch was updated on September 23, 2026 and BTKey.ru on September 23, 2026.

---

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