# Blue Switch — For Bluetooth BLE Relay Module

> Bluetooth BLE relay module control for iPhone and iPad. (iPhone/iPad app by Vitalij Schaefer.)

- Source: https://appshunter.io/ios/app/blue-switch/id828280876 (this page in markdown: same URL + `.md`)
- Developer: [Vitalij Schaefer](https://appshunter.io/developer/393749449)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 3.80/5 from 43 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 31 MB
- Languages: American English, Dutch, Canadian French, German (Germany), Italian, Japanese, Korean, European Portuguese, Russian, Chinese (Simplified, China) and 1 more
- Released: 2017-08-14
- Data updated: 2026-08-12
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/blue-switch/id828280876/reviews.md

## What is Blue Switch?

This app allows you to control a 2, 4 or 8 Channel Relay Module Bluetooth BLE with your iPhone or iPad.

To use this app, you need one of these three modules:
"2 Channel Relay Module Bluetooth BLE"
"4 Channel Relay Module Bluetooth BLE"
"8 Channel Relay Module Bluetooth BLE"

These modules can be ordered at many online shops. Please use a search engine to find a shop. 

This app can be connected with any number of modules. By entering an alias, the modules are marked clearly and can easily be assigned to a use area. Name the modules for example "Relay 1", "Relay 2", "Electronic lab project" or "Ambient Light".

An alias can also be entered for each relay. 

The default password for these modules is usually "12345678". For more security, the app also allows you to change the password. The password must be eight digits long.

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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


## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/blue-switch/id828280876/reviews.md

### 1/5 — Truly worthless without paying for it

*2024-11-16*

They say you can use it without paying for it, but instead of switching anything it just plays another ad forever. What a miserable creation.

Against my better judgment, I paid the $15. The app is still completely useless. It will connect to my switch will not switch anything.

**Developer response:** Thank you for your feedback. This app only works with a specific module type. The module you are using is not supported by this app. You can find more information on our website.

### 1/5 — Rip off

*2023-03-15*

£15 pounds to make this tiny little app work what a con.

**Developer response:** Thank you for your feedback. You can use this app completely free of charge without paying anything. If the ads bother you, you can completely remove the ads with a one-time in-app purchase.

### 1/5 — Not much for instructions

*2022-02-18*

Still trying to figure out if it works, how to name switches etc, you pretty much must pay to remove ads if you want to get anything done. They come nonstop.

**Developer response:** Thank you for your feedback. Please tap on the text to change the name of the switch.

### 3/5 — Hope it works - no joy yet.

*2021-03-09*

But I have confidence. 8 Relay board en route. No luck pairing a 4, yet, with this ap. 

Is it possible to configure (on a per board basis) the relays to be interlocking - one at time only - or momentary contact - also called inching - with adjustable contact duration?

### 1/5 — Useless

*2020-03-21*

Useless trying to use it unless you pay them to remove the ads

**Developer response:** Thank you for your feedback. You can use the app without paying anything. If you are bothered by the advertising, you can remove it with an in-app purchase.

### 4/5 — Nice

*2019-11-11, version 2.8*

Wish response was a little quicker but overall I like it

## Frequently asked questions about Blue Switch

### Does Blue Switch have ads?

Yes, Blue Switch contains advertisements. This is common for free utility applications that offer in-app purchases for enhanced features or an ad-free experience.

### What devices is Blue Switch compatible with?

Blue Switch is compatible with iPhone, iPad, and iPod devices. It requires iOS 4+ and is designed for a wide range of Apple mobile devices.

### How do I connect a relay module to Blue Switch?

To connect, ensure you have a compatible 2, 4, or 8 Channel Relay Module Bluetooth BLE. The app then connects via Bluetooth, and you can assign aliases for easy identification.

### Can I change the password for my relay module in Blue Switch?

Yes, Blue Switch allows you to change the default password for your relay module. The password must be eight digits long for increased security.

### What is the rating for Blue Switch?

Blue Switch has a rating of 3.8 stars based on 43 ratings. This indicates a generally positive but mixed user reception.

### How often is Blue Switch updated?

The latest version of Blue Switch is 6.2, last updated on October 2, 2025. This suggests the app is actively maintained and receives regular updates.

### Is Blue Switch suitable for younger users?

Blue Switch has an age rating of 4+, making it suitable for younger users under parental supervision. The app's functionality is straightforward for controlling hardware.

### Where can I buy the required relay modules for Blue Switch?

The relay modules required for Blue Switch can be ordered at many online shops. You will need to use a search engine to find a suitable retailer for the '2 Channel Relay Module Bluetooth BLE', '4 Channel Relay Module Bluetooth BLE', or '8 Channel Relay Module Bluetooth BLE'.

## Version history (last 5 releases)

### 6.3 — 2026-05-26

Bug fixes and improvements

### 6.2 — 2025-10-02

Optimized for the new operating system.

### 6.1 — 2025-02-16

Bug fixes and improvements

### 6.0 — 2024-08-30

Improved app stability by identifying and resolving potential crash causes.

### 5.9 — 2024-06-24

Bug fixes and improvements

## Apps similar to Blue Switch

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [ForBLE](https://appshunter.io/ios/app/forble/id6468229153) | — | Free | Utilities |
| [My Control Panel](https://appshunter.io/ios/app/my-control-panel/id1534518021) | 3.5 (2) | Free | Utilities |
| [BLE tools with terminal](https://appshunter.io/ios/app/ble-tools-with-terminal/id1585495917) | — | Free | Utilities |
| [yACK FAST](https://appshunter.io/ios/app/yack-fast/id1166008825) | — | Free | Utilities |
| [BLE SPP](https://appshunter.io/ios/app/ble-spp/id1064398588) | — | Free | Utilities |
| [BlueTooth for Arduino](https://appshunter.io/ios/app/bluetooth-for-arduino/id1665772608) | 2.5 (2) | Free | Utilities |

## More apps by Vitalij Schaefer

- [Image Size](https://appshunter.io/ios/app/image-size/id670766542)
- [Biometric Passport Photo](https://appshunter.io/ios/app/biometric-passport-photo/id759142884)
- [Passport Photo - ID Photo](https://appshunter.io/ios/app/passport-photo-id-photo/id917389447)
- [Batch Resize](https://appshunter.io/ios/app/batch-resize/id917394599)
- [Photo Collage Maker & Printer](https://appshunter.io/ios/app/photo-collage-maker-and-printer/id917397212)

All apps by Vitalij Schaefer: https://appshunter.io/developer/393749449

## Related topics

[relaysms](https://appshunter.io/ios/topics/relaysms)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-12.*