# SEMM vs Rytmo

The clearest difference is update cadence: Rytmo at every 2 weeks against SEMM's every 3 months. SEMM's advantage is iOS requirement (15.0 vs 18.2). 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.

SEMM ships an update every 3 months, Rytmo every 2 weeks. The most recent releases landed on May 18, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | SEMM | Rytmo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Size | 85 MB | 91 MB |
| Requires iOS | **15.0** | 18.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [SEMM](https://appshunter.io/developer/1460144548) | [Jose Martin Perez Gonzalez](https://appshunter.io/developer/1850598084) |

## What reviewers say

### SEMM

[App page](https://appshunter.io/ios/app/semm/id1460144549)

**Features:** macOS Compatibility

**In-app purchases:** none


### Rytmo

[App page](https://appshunter.io/ios/app/rytmo/id6754881003)

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

**In-app purchases:** none


## Frequently asked questions

### Is SEMM free?

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

### Is Rytmo free?

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

### Do SEMM or Rytmo have ads?

Neither SEMM nor Rytmo shows ads.

### Which is updated more often, SEMM or Rytmo?

SEMM ships an update every 3 months, and Rytmo every 2 weeks. Most recently, SEMM was updated on May 18, 2026 and Rytmo on September 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.*