# YFF Teacher vs DevicesTool

The clearest difference is update cadence: YFF Teacher at every 2 days against DevicesTool's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

YFF Teacher ships an update every 2 days, DevicesTool every 2 months. The most recent releases landed on October 1, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | YFF Teacher | DevicesTool |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 months |
| Size | 3 MB | 25 MB |
| Requires iOS | 18.5 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Thomas Riis](https://appshunter.io/developer/1834245438) | [Shenzhen Dragino technology development co.LTD](https://appshunter.io/developer/1785155238) |

## What reviewers say

### YFF Teacher

[App page](https://appshunter.io/ios/app/yff-teacher/id6751249925)

**Features:** macOS Compatibility

**In-app purchases:** none


### DevicesTool

[App page](https://appshunter.io/ios/app/devicestool/id6751866369)

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

**In-app purchases:** none


## Frequently asked questions

### Is YFF Teacher free?

YFF Teacher is free to download, with no in-app purchases.

### Is DevicesTool free?

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

### Do YFF Teacher or DevicesTool have ads?

Neither YFF Teacher nor DevicesTool shows ads.

### Which is updated more often, YFF Teacher or DevicesTool?

YFF Teacher ships an update every 2 days, and DevicesTool every 2 months. Most recently, YFF Teacher was updated on October 1, 2026 and DevicesTool on October 9, 2026.

---

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