# Ikodoku vs Retro Blocks!

The clearest difference is in-app purchases: Retro Blocks! at none against Ikodoku's 1. Ikodoku's advantage is update cadence (weekly vs every 11 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Ikodoku sells 1 one-off in-app purchase. Retro Blocks! asks for nothing beyond the download.

Ikodoku ships an update weekly, Retro Blocks! every 11 months. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Ikodoku | Retro Blocks! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ikodoku/id1553522429/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 11 months |
| Monetization | Free with in-app purchases | — |
| Size | 3 MB | 26 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Papaja AB](https://appshunter.io/developer/1478116229) | [Strive, Limited Liability Company](https://appshunter.io/developer/1669148658) |

## What reviewers say

### Ikodoku

[App page](https://appshunter.io/ios/app/ikodoku/id1553522429)

Experience Sudoku with a visual twist. This game replaces traditional numbers with distinct symbols, offering a fresh challenge for puzzle enthusiasts. Enjoy a unique and engaging logic puzzle experience.

**Highlights:** Numberless Sudoku puzzles, Symbol-based gameplay, Logic and pattern recognition, Challenging puzzles, Unique visual interface

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


### Retro Blocks!

[App page](https://appshunter.io/ios/app/retro-blocks/id6670768198)

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

**In-app purchases:** none


## Frequently asked questions

### Is Ikodoku free?

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

### Is Retro Blocks! free?

Retro Blocks! is free to download, with no in-app purchases.

### Do Ikodoku or Retro Blocks! have ads?

Neither Ikodoku nor Retro Blocks! shows ads.

### Which is updated more often, Ikodoku or Retro Blocks!?

Ikodoku ships an update weekly, and Retro Blocks! every 11 months. Most recently, Ikodoku was updated on November 3, 2026 and Retro Blocks! on October 27, 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.*