Blue Switch vs Applets Center
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.
Applets Center
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Smart Control Center is a general-purpose IoT application. With suitable collectors and controllers, smart scenes and smart control solutions can be quickly built. Main features: # Device Management - Add, delete devices - Device group management - Device information, group information management # Data Management - Real-time data viewing, such as temperature, humidity, current, voltage, etc. - View historical data # Equipment Control - Remote start and stop equipment, support forward and reverse control - Timing control device, such as turning on the device at 5 am every Monday - Cyclic control equipment, such as turning on the equipment for 5 minutes every 1 hour - Intelligent linkage, such as turning on the device when the temperature is greater than 25°C # Personnel Management - Manage personnel by role, administrator, operator, inspector - View personnel operation records # Other Functions - Receive alarms, such as high current, abnormal power failure, etc. - Handle alarms Supporting Data Sources: - All sensors with Modbus RTU protocol - All Collectors with Modbus RTU protocol - Third-party data submitted by s2s Supported Devices: - Smart distribution box - Intelligent greenhouse control box - Smart construction site distribution box
Screenshots
Verdict
The clearest difference is in-app purchases: Applets Center at none against Blue Switch's 1. Applets Center also leads on ads (none vs shown) and update cadence (every 9 days vs every 3 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. Applets Center asks for nothing beyond the download.
Blue Switch ships an update every 3 months, Applets Center every 9 days. The most recent releases landed on September 23, 2026 and October 11, 2026 respectively.
| Parameter | Blue Switch | Applets Center |
|---|---|---|
| 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 | Every 9 days — better |
| 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 | 12.0 — better |
| Further details — not scored | ||
| Size | 39 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Vitalij Schaefer | 桂花 陈 |
In-app purchases
Blue Switch
- Remove Ads$17.99
Applets Center
No in-app purchases









