Blue Van Clef for Mobile vs 39Tools
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Blue Van Clef for Mobile
Explore Bluetooth Low Energy (BLE) devices by discovering their services, characteristics, and descriptors. This open-source tool respects accessibility features like VoiceOver and Dark Mode.
- BLE device discovery
- Service, characteristic, descriptor exploration
- Accessibility support (VoiceOver, Dark Mode)
- Open-source MIT license
- Bluetooth Framework integration
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Once connected to a device, you can do a "drill-down" discovery of the device's services, characteristics, and descriptors. The app is designed to respect Accessibility (VoiceOver and Increased Contrast), as well as Dark Mode. This is a 100% open-source app, with the code licensed as MIT. It uses the BlueThoth Framework (A Bluetooth SDK), which is also 100% open-source. The source repo for the app is: https://github.com/RiftValleySoftware/BlueVanClef The source repo for the BlueThoth Framework is: https://github.com/RiftValleySoftware/RVS_BlueThoth This is a page with some basic instructions for the app: https://riftvalleysoftware.com/bluevanclef/
39Tools
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39Tools is a application that integrates SSH,MYSQL,TCP,UDP,MQTT,BLE,Video and other debugging tools.
Screenshots
Verdict
The clearest difference is update cadence: Blue Van Clef for Mobile at every 2 months against 39Tools's every 9 months. Blue Van Clef for Mobile also leads on device support (4 vs 2). On price, ads, in-app purchases and iOS requirement 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. Neither carries in-app purchases, so what you see is what you pay.
Blue Van Clef for Mobile ships an update every 2 months, 39Tools every 9 months. The most recent releases landed on September 11, 2026 and September 10, 2026 respectively.
| Parameter | Blue Van Clef for Mobile | 39Tools |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (6 ratings) — better | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 2 months — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 112 MB |
| Age rating | 4+ | 4+ |
| Developer | Rift Valley Software, Inc. | 策 王 |
In-app purchases
Blue Van Clef for Mobile
No in-app purchases
39Tools
No in-app purchases
Questions
Is Blue Van Clef for Mobile free?
Is 39Tools free?
Do Blue Van Clef for Mobile or 39Tools have ads?
Which is updated more often, Blue Van Clef for Mobile or 39Tools?
Other comparisons
