Blue Switch vs JDY
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.
JDY
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主要功能： 1、通过蓝牙连接测色仪，采集颜色数据，设置测色仪参数，对仪器进行校准等操作。 2、测量颜色数据，包含反射率、CIE-LABCH、三刺激值XYZ、Yxy、RGB、密度（A/T/M/E)、同色异谱、遮盖力、白度、黄度、黑底、力分、着色力、色牢度等颜色参数。 3、颜色比较，判断颜色是否合格，多种色差公式（ΔE*ab，ΔE*94，ΔE*00，ΔEcmc等）。 4、颜色存储，能够轻松的建立自己的颜色数据，并将颜色数据保存到颜色数据库中。 5、颜色查找，测量一个颜色，可以快速的在颜色数据库中间找到最接近的颜色数据。
Screenshots
Verdict
The clearest difference is in-app purchases: JDY at none against Blue Switch's 1. JDY also leads on ads (none vs shown) and iOS requirement (11.0 vs 18.0). 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. JDY asks for nothing beyond the download.
| Parameter | Blue Switch | JDY |
|---|---|---|
| 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 | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 39 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Vitalij Schaefer | 坤 杨 |
In-app purchases
Blue Switch
- Remove Ads$17.99
JDY
No in-app purchases
