# Chess Knowledge vs Sheet Scan

The clearest difference is update cadence: Sheet Scan at every 3 days against Chess Knowledge's monthly. Chess Knowledge's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 18.4). On price and in-app purchases there is nothing between them.

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

Chess Knowledge ships an update monthly, Sheet Scan every 3 days. The most recent releases landed on October 27, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Chess Knowledge | Sheet Scan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (7 ratings)](https://appshunter.io/ios/app/sheet-scan/id6747018345/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | — | Free |
| Size | 86 MB | 157 MB |
| Requires iOS | **12.0** | 18.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Chess Knowledge FZE](https://appshunter.io/developer/1628767249) | [Guy Zaczepinski](https://appshunter.io/developer/1819420192) |

## What reviewers say

### Chess Knowledge

[App page](https://appshunter.io/ios/app/chess-knowledge/id1628767247)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sheet Scan

[App page](https://appshunter.io/ios/app/sheet-scan/id6747018345)

This app helps student musicians practice more effectively by scanning sheet music, providing professional recordings, and offering tools like a visual metronome, tuner, and scales with fingerings. It aims to make music practice faster, easier, and less frustrating for learners.

**Highlights:** Sheet music scanner with YouTube recordings, Visual metronome with subdivisions, Instrument-specific tuner with tips, Scales with fingerings, Practice tools for musicians

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chess Knowledge free?

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

### Is Sheet Scan free?

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

### Which is updated more often, Chess Knowledge or Sheet Scan?

Chess Knowledge ships an update monthly, and Sheet Scan every 3 days. Most recently, Chess Knowledge was updated on October 27, 2026 and Sheet Scan 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.*