# Blue Van Clef for Mobile vs 39Tools

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.

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 October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Blue Van Clef for Mobile | 39Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (6 ratings)](https://appshunter.io/ios/app/blue-van-clef-for-mobile/id1511428132/reviews)** | — |
| Number of ratings | **6** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Monetization | Free | — |
| Size | 4 MB | 112 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rift Valley Software, Inc.](https://appshunter.io/developer/1448933102) | [策 王](https://appshunter.io/developer/1681706231) |

## What reviewers say

### Blue Van Clef for Mobile

[App page](https://appshunter.io/ios/app/blue-van-clef-for-mobile/id1511428132)

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.

**Highlights:** BLE device discovery, Service, characteristic, descriptor exploration, Accessibility support (VoiceOver, Dark Mode), Open-source MIT license, Bluetooth Framework integration

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


### 39Tools

[App page](https://appshunter.io/ios/app/39tools/id6447797534)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Blue Van Clef for Mobile free?

Blue Van Clef for Mobile is free to download, with no in-app purchases.

### Is 39Tools free?

39Tools is free to download, with no in-app purchases.

### Do Blue Van Clef for Mobile or 39Tools have ads?

Neither Blue Van Clef for Mobile nor 39Tools shows ads.

### Which is updated more often, Blue Van Clef for Mobile or 39Tools?

Blue Van Clef for Mobile ships an update every 2 months, and 39Tools every 9 months. Most recently, Blue Van Clef for Mobile was updated on October 24, 2026 and 39Tools on October 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*