# Chessdoku vs TANGENT

The clearest difference is ads: Chessdoku at none against TANGENT's shown. Chessdoku also leads on iOS requirement (16.4 vs 18.0). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Chessdoku sells 1 one-off in-app purchase and TANGENT sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Chessdoku against 5.0 for TANGENT. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Chessdoku ships an update every 5 weeks, TANGENT every 3 weeks. The most recent releases landed on October 8, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Chessdoku | TANGENT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/chessdoku/id6789803491/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/tangent-ring-logic-puzzle/id6814649973/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 32 MB | 24 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Matt Falk](https://appshunter.io/developer/6789803493) | [Farzin Tavakoli](https://appshunter.io/developer/1524235646) |

## What reviewers say

### Chessdoku

[App page](https://appshunter.io/ios/app/chessdoku/id6789803491)

This logic puzzle game combines Sudoku-style placement with chess piece attack rules. Solve over 1,500 unique puzzles across five distinct game modes, with a daily challenge for all players. Enjoy a pure, offline experience with no ads or tracking.

**Highlights:** Sudoku-style piece placement, Chess piece attack logic, Five unique game modes, 1,500 puzzles, Daily challenge, Offline play, Hint system with deductions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Everything | $4.99 | one-time |


### TANGENT

[App page](https://appshunter.io/ios/app/tangent-ring-logic-puzzle/id6814649973)

This logic puzzle game challenges you to land every dot in its socket using a single, exact rule. With no timers or luck involved, it offers a satisfyingly precise and mentally stimulating experience. Explore various difficulty levels and unique mechanics across multiple orbits.

**Highlights:** One exact rule for gameplay, No timers or luck involved, Endless, procedurally generated boards, Six distinct difficulty orbits, Daily brain teasers, Supports VoiceOver and Dynamic Type

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TANGENT Full Game | $4.99 | one-time |


## Frequently asked questions

### Is Chessdoku free?

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

### Is TANGENT free?

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

### Which has better reviews, Chessdoku or TANGENT?

Chessdoku and TANGENT are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Chessdoku or TANGENT have ads?

TANGENT shows ads; Chessdoku does not.

### Which is updated more often, Chessdoku or TANGENT?

Chessdoku ships an update every 5 weeks, and TANGENT every 3 weeks. Most recently, Chessdoku was updated on October 8, 2026 and TANGENT on October 29, 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.*