# Slav Button vs Know Notes

The clearest difference is in-app purchases: Slav Button at none against Know Notes's 6. Slav Button also leads on device support (3 vs 1) and ratings volume (98 vs 32). Know Notes's advantage is update cadence (fortnightly vs monthly). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Know Notes sells 6 one-off in-app purchases. Slav Button asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Slav Button against 4.9 for Know Notes. Both are backed by a comparable volume of ratings — 98 and 32 respectively. Written reviews are what separate them: 90% of Slav Button's written reviews are positive against 96% of Know Notes's.

Slav Button ships an update monthly, Know Notes fortnightly. The most recent releases landed on October 4, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Slav Button | Know Notes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (98 ratings)](https://appshunter.io/ios/app/slav-button/id1422057687/reviews) | [4.9 (32 ratings)](https://appshunter.io/ios/app/know-notes-learn-music/id1536356966/reviews) |
| Number of ratings | **98** | 32 |
| Positive reviews | 90.3% of reviews | **95.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 146 MB | 107 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [Karlo Bencic](https://appshunter.io/developer/1049015150) | [wylan neely](https://appshunter.io/developer/1261508202) |

## What reviewers say

### Slav Button

[App page](https://appshunter.io/ios/app/slav-button/id1422057687)

Trigger a collection of hard bass songs to entertain friends. Perfect for gatherings and enjoying music while squatting.

**Highlights:** Hard bass song collection, Entertain friends, Squatting music, Gopnik theme, Over 60 songs

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

**In-app purchases:** none


### Know Notes

[App page](https://appshunter.io/ios/app/know-notes-learn-music/id1536356966)

Develop your musical ear by learning to identify notes and chords by sound. This gamified app makes practicing fun and competitive, allowing you to progress from basic notes to sharps and flats.

**Highlights:** Ear training, Note recognition, Chord recognition, Gamified learning, Progressive difficulty, Natural notes, sharps, and flats

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Violin Notes | $0.99 | one-time |
| Electronic Keyboard Notes | $0.99 | one-time |
| Grand Piano Notes | $0.99 | one-time |
| Unlock Violin Instrument | $2.99 | one-time |
| Acoustic Guitar (Major Chords) | $2.99 | one-time |
| Unlock Acoustic Guitar | $3.99 | one-time |


## Frequently asked questions

### Is Slav Button free?

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

### Is Know Notes free?

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

### Which has better reviews, Slav Button or Know Notes?

Slav Button and Know Notes are both rated 4.9 out of 5 on the App Store, from 98 and 32 ratings respectively.

### Do Slav Button or Know Notes have ads?

Neither Slav Button nor Know Notes shows ads.

### Which is updated more often, Slav Button or Know Notes?

Slav Button ships an update monthly, and Know Notes fortnightly. Most recently, Slav Button was updated on October 4, 2026 and Know Notes on October 9, 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.*