# Rechentrainer vs Hexadecimal

The clearest difference is in-app purchases: Rechentrainer at none against Hexadecimal's 1. Rechentrainer also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Hexadecimal sells 1 one-off in-app purchase. Rechentrainer asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 9, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Rechentrainer | Hexadecimal |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | — |
| Size | 7 MB | 140 MB |
| Requires iOS | 14.2 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nicolai Kummer](https://appshunter.io/developer/1497635656) | [Amrit Duwal](https://appshunter.io/developer/1507795021) |

## What reviewers say

### Rechentrainer

[App page](https://appshunter.io/ios/app/rechentrainer/id1497635657)

This app offers personalized math practice for all ages, covering addition, subtraction, multiplication, and division. It features customizable difficulty levels, motivational rewards, and progress tracking to make learning enjoyable and effective.

**Highlights:** Personalized arithmetic practice, Customizable difficulty levels, Motivational reward system, Learning progress tracking, Suitable for all ages

**Features:** macOS Compatibility

**In-app purchases:** none


### Hexadecimal

[App page](https://appshunter.io/ios/app/hexadecimal/id1572829825)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $0.99 | one-time |


## Frequently asked questions

### Is Rechentrainer free?

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

### Is Hexadecimal free?

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

### Do Rechentrainer or Hexadecimal have ads?

Hexadecimal shows ads; Rechentrainer does not.

### Which is updated more often, Rechentrainer or Hexadecimal?

Rechentrainer ships an update every 2 months, and Hexadecimal every 2 months. Most recently, Rechentrainer was updated on October 9, 2026 and Hexadecimal on October 3, 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.*