# Decoder vs ISUD Zero

The clearest difference is iOS requirement: Decoder at 7.0 against ISUD Zero's 15.0. 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.

## The numbers

| Metric | Decoder | ISUD Zero |
| --- | --- | --- |
| 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 | — |
| Monetization | Free | — |
| Size | 1 MB | 119 MB |
| Requires iOS | **7.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Edwin Hou](https://appshunter.io/developer/292240393) | [Suwitcha Sugthana](https://appshunter.io/developer/372726303) |

## 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


### ISUD Zero

[App page](https://appshunter.io/ios/app/isud-zero/id6765926399)

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

**In-app purchases:** none


## Frequently asked questions

### Is Decoder free?

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

### Is ISUD Zero free?

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

### Do Decoder or ISUD Zero have ads?

Neither Decoder nor ISUD Zero shows ads.

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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.*