Blue Switch vs InterLock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Blue Switch
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.
- 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
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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.
InterLock
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酒精锁APP用于获取酒精锁上的测量数据，并上传到酒精锁管理系统进行数据分析和管理
Screenshots
Verdict
The clearest difference is in-app purchases: InterLock at none against Blue Switch's 1. InterLock also leads on ads (none vs shown) and iOS requirement (10.0 vs 18.0). Blue Switch's advantage is update cadence (every 3 months vs every 25 months). On price and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Blue Switch sells 1 one-off in-app purchase. InterLock asks for nothing beyond the download.
Blue Switch ships an update every 3 months, InterLock every 25 months. The most recent releases landed on September 23, 2026 and September 29, 2026 respectively.
| Parameter | Blue Switch | InterLock |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (43 ratings) — better | — |
| Positive reviews | 16.7% of reviews | — |
| Number of ratings | 43 — better | — |
| Update frequency | Every 3 months — better | Every 25 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 18.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 39 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Vitalij Schaefer | Justec(shenzhen)Co.,Ltd |
In-app purchases
Blue Switch
- Remove Ads$17.99
InterLock
No in-app purchases
