# Decoder vs Kodulki

The clearest difference is update cadence: Kodulki at fortnightly against Decoder's every 7 months. Decoder's advantage is iOS requirement (7.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

Decoder ships an update every 7 months, Kodulki fortnightly. The most recent releases landed on October 20, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Decoder | Kodulki |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.2 (5 ratings)](https://appshunter.io/ios/app/decoder/id294816947/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 1 MB | 5 MB |
| Requires iOS | **7.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Edwin Hou](https://appshunter.io/developer/292240393) | [Alexander Tiutiunnyk](https://appshunter.io/developer/6787043994) |

## What reviewers say

### Decoder

[App page](https://appshunter.io/ios/app/decoder/id294816947)

This app assists players in solving the Mastermind logic game. It helps narrow down possible solutions by analyzing your guesses and their scores. Continue inputting your game progress until only one solution remains.

**Highlights:** Mastermind game solver, Input guesses and scores, Reduces possible solutions, Guides to single solution

**Features:** macOS Compatibility

**In-app purchases:** none


### Kodulki

[App page](https://appshunter.io/ios/app/kodulki-color-logic-puzzle/id6787043992)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Decoder free?

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

### Is Kodulki free?

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

### Do Decoder or Kodulki have ads?

Neither Decoder nor Kodulki shows ads.

### Which is updated more often, Decoder or Kodulki?

Decoder ships an update every 7 months, and Kodulki fortnightly. Most recently, Decoder was updated on October 20, 2026 and Kodulki on October 16, 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.*