# Rehm vs GuideMaster

The clearest difference is update cadence: GuideMaster at weekly against Rehm's every 4 months. Rehm's advantage is iOS requirement (8.0 vs 13.0). 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.

Rehm ships an update every 4 months, GuideMaster weekly. The most recent releases landed on October 2, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Rehm | GuideMaster |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Size | 35 MB | 8 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Codana GmbH](https://appshunter.io/developer/1133125230) | [STAHLWILLE](https://appshunter.io/developer/1282407820) |

## What reviewers say

### Rehm

[App page](https://appshunter.io/ios/app/rehm/id1454030325)

**Features:** macOS Compatibility

**In-app purchases:** none


### GuideMaster

[App page](https://appshunter.io/ios/app/guidemaster/id1624480304)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Rehm free?

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

### Is GuideMaster free?

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

### Do Rehm or GuideMaster have ads?

Neither Rehm nor GuideMaster shows ads.

### Which is updated more often, Rehm or GuideMaster?

Rehm ships an update every 4 months, and GuideMaster weekly. Most recently, Rehm was updated on October 2, 2026 and GuideMaster on October 14, 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.*