# 303 Note vs UME

The clearest difference is update cadence: UME at every 2 days against 303 Note's every 4 weeks. 303 Note's advantage is ratings volume (9 vs 1). On price, rating, review sentiment and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.9 for 303 Note against 5.0 for UME. That said, the two scores are not equally well evidenced: 303 Note has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

303 Note ships an update every 4 weeks, UME every 2 days. The most recent releases landed on October 27, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | 303 Note | UME |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (9 ratings)](https://appshunter.io/ios/app/303-note-acid-sequencer/id1501084395/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ume/id6807392114/reviews)** |
| Number of ratings | **9** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 2 days** |
| Monetization | Free | Free |
| Size | 23 MB | 37 MB |
| Requires iOS | 18.6 | **17.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [tsubasa hattori](https://appshunter.io/developer/1501084394) | [Oleksandr Baranov](https://appshunter.io/developer/1875313902) |

## What reviewers say

### 303 Note

[App page](https://appshunter.io/ios/app/303-note-acid-sequencer/id1501084395)

Quickly create, manage, and play back acid bassline synth sequences. Features a step sequencer, built-in synth knobs for tone shaping, and CSV export for backups. Ideal for musicians needing to save and recall patterns.

**Highlights:** Step sequencer interface, Instant pattern playback, TB-303 style tone knobs, CSV pattern export, Dark mode support

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

**In-app purchases:** none


### UME

[App page](https://appshunter.io/ios/app/ume/id6807392114)

This app helps you organize saved links, places, and ideas into actionable plans. It supports individual and collaborative planning with shared spaces for events, wishlists, and ideas. The assistant can help turn saved items into concrete next steps.

**Highlights:** Save links, images, and places, Organize with folders and tags, Shared planning spaces, Event creation, Wishlist management, Film matching feature, Assistant for planning

**In-app purchases:** none


## Frequently asked questions

### Is 303 Note free?

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

### Is UME free?

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

### Which has better reviews, 303 Note or UME?

UME is rated higher. 303 Note averages 4.9 out of 5 from 9 ratings, while UME averages 5.0 from 1 ratings.

### Do 303 Note or UME have ads?

Neither 303 Note nor UME shows ads.

### Which is updated more often, 303 Note or UME?

303 Note ships an update every 4 weeks, and UME every 2 days. Most recently, 303 Note was updated on October 27, 2026 and UME on October 19, 2026.

---

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