# 01Converter vs Contradict

The clearest difference is rating: 01Converter at 4.5 against Contradict's 1.0. 01Converter also leads on iOS requirement (8.1 vs 13.0). On price, ratings volume, update cadence and ads there is nothing between them.

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

01Converter holds the better App Store score, 4.5 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

01Converter ships an update every 9 months, Contradict every 6 months. The most recent releases landed on October 23, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 01Converter | Contradict |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/01converter/id334626954/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/contradict/id6450902162/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 94.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 6 months** |
| Monetization | Free | Free |
| Size | 11 MB | 3 MB |
| Requires iOS | **8.1** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Francesco Burelli](https://appshunter.io/developer/334626957) | [Robin Hedinger](https://appshunter.io/developer/1454535247) |

## What reviewers say

### 01Converter

[App page](https://appshunter.io/ios/app/01converter/id334626954)

This app allows for easy conversion between binary, hexadecimal, octal, and decimal number systems. It also includes functions for bitwise operations like shifting and arithmetic operations such as adding or subtracting one. An optimized keyboard simplifies input for various number bases.

**Highlights:** Number system conversion (binary, hex, octal, decimal), Unicode conversion, Shift left function, Shift right function, Add 1 function, Subtract 1 function

**Features:** macOS Compatibility

**In-app purchases:** none


### Contradict

[App page](https://appshunter.io/ios/app/contradict/id6450902162)

This app encourages users to challenge their own perspectives by presenting opposing viewpoints. It provides links to external resources for deeper exploration of topics, fostering open-mindedness and critical thinking.

**Highlights:** Presents opposing viewpoints, Encourages critical thinking, Provides Wikipedia links, Fosters open-mindedness, Facilitates deeper exploration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 01Converter free?

01Converter is free to download, with no in-app purchases.

### Is Contradict free?

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

### Which has better reviews, 01Converter or Contradict?

01Converter is rated higher. 01Converter averages 4.5 out of 5 from 2 ratings, while Contradict averages 1.0 from 1 ratings.

### Do 01Converter or Contradict have ads?

Neither 01Converter nor Contradict shows ads.

### Which is updated more often, 01Converter or Contradict?

01Converter ships an update every 9 months, and Contradict every 6 months. Most recently, 01Converter was updated on October 23, 2026 and Contradict 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.*