# Grothm vs RhythmForge

Grothm and RhythmForge are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Grothm sells 1 one-off in-app purchase and RhythmForge sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Grothm ships an update every 3 weeks, RhythmForge fortnightly. Both last shipped on November 5, 2026.

## The numbers

| Metric | Grothm | RhythmForge |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | — | Freemium |
| Size | 7 MB | 31 MB |
| Requires iOS | 18 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [雒敏 郭](https://appshunter.io/developer/1878686486) | [Florian Preknya](https://appshunter.io/developer/1896298298) |

## What reviewers say

### Grothm

[App page](https://appshunter.io/ios/app/grothm/id6759484408)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Grothm Pro | $2.99 | one-time |


### RhythmForge

[App page](https://appshunter.io/ios/app/rhythmforge-rhythm-trainer/id6766515741)

This app provides real-time feedback on your timing accuracy by listening to your playing through the microphone. It offers practice modes, scored challenges, and learning tools to help musicians improve their rhythm and precision.

**Highlights:** Real-time timing feedback in milliseconds, Scored rhythm challenges with tiers, Learning mode to master complex rhythms, Extensive library of rudiments and world rhythms, Tempo ramp and silent bar features, Per-device latency calibration, Pattern builder for custom rhythms (Pro)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RhythmForge PRO Monthly | $4.99 | per month |
| RhythmForge PRO Annual | $34.99 | per year |
| RhythmForge PRO Lifetime | $74.99 | one-time |


## Frequently asked questions

### Is Grothm free?

Grothm is free to download, with in-app purchases available.

### Is RhythmForge free?

RhythmForge is free to download, with in-app purchases available.

### Do Grothm or RhythmForge have ads?

Neither Grothm nor RhythmForge shows ads.

### Which is updated more often, Grothm or RhythmForge?

Grothm ships an update every 3 weeks, and RhythmForge fortnightly. Most recently, Grothm was updated on November 5, 2026 and RhythmForge on November 5, 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.*