# Prof Pref vs AMBER ROCK

The clearest difference is update cadence: AMBER ROCK at monthly against Prof Pref's every 6 months. AMBER ROCK also leads on iOS requirement (13.0 vs 15.0). 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.

Prof Pref ships an update every 6 months, AMBER ROCK monthly. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Prof Pref | AMBER ROCK |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Size | 1 MB | 96 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Vitaly Kulagin](https://appshunter.io/developer/1524623012) | [Shanghai Voltdeer Technology Co.,Ltd.](https://appshunter.io/developer/1789460841) |

## What reviewers say

### Prof Pref

[App page](https://appshunter.io/ios/app/prof-pref/id1662598113)

**Features:** macOS Compatibility

**In-app purchases:** none


### AMBER ROCK

[App page](https://appshunter.io/ios/app/amber-rock/id6748421023)

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

**In-app purchases:** none


## Frequently asked questions

### Is Prof Pref free?

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

### Is AMBER ROCK free?

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

### Do Prof Pref or AMBER ROCK have ads?

Neither Prof Pref nor AMBER ROCK shows ads.

### Which is updated more often, Prof Pref or AMBER ROCK?

Prof Pref ships an update every 6 months, and AMBER ROCK monthly. Most recently, Prof Pref was updated on October 9, 2026 and AMBER ROCK on October 8, 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.*