# Chess Notation Lab vs Sayı Dedektifi

The clearest difference is in-app purchases: Sayı Dedektifi at none against Chess Notation Lab's 1. Chess Notation Lab's advantage is update cadence (every 3 days vs every 8 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Chess Notation Lab sells 1 one-off in-app purchase. Sayı Dedektifi asks for nothing beyond the download.

Chess Notation Lab ships an update every 3 days, Sayı Dedektifi every 8 days. The most recent releases landed on October 14, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Chess Notation Lab | Sayı Dedektifi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/chess-notation-lab/id6480255515/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 8 days |
| Monetization | Free with in-app purchases | — |
| Size | 26 MB | 8 MB |
| Requires iOS | 18.6 | **17.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Nishat Majid](https://appshunter.io/developer/1727207034) | [Yakut Ozcan](https://appshunter.io/developer/1853412786) |

## What reviewers say

### Chess Notation Lab

[App page](https://appshunter.io/ios/app/chess-notation-lab/id6480255515)

Master chess board coordinates and piece movement with this training app. Improve your ability to visualize moves, read notation, and understand square colors. Designed to enhance your chess calculations and potentially boost your rating.

**Highlights:** Identify squares by coordinate, Fluid piece movement visualization, Translate moves to notation, Identify square color, Orient on the board, Speed up calculation, Blind chess practice

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $9.99 | one-time |


### Sayı Dedektifi

[App page](https://appshunter.io/ios/app/say-dedektifi/id6756681077)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chess Notation Lab free?

Chess Notation Lab is free to download, with in-app purchases available.

### Is Sayı Dedektifi free?

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

### Do Chess Notation Lab or Sayı Dedektifi have ads?

Neither Chess Notation Lab nor Sayı Dedektifi shows ads.

### Which is updated more often, Chess Notation Lab or Sayı Dedektifi?

Chess Notation Lab ships an update every 3 days, and Sayı Dedektifi every 8 days. Most recently, Chess Notation Lab was updated on October 14, 2026 and Sayı Dedektifi on October 1, 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.*