# Rechentrainer vs 4 Plus 4

The clearest difference is in-app purchases: Rechentrainer at none against 4 Plus 4's 1. On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. 4 Plus 4 sells 1 one-off in-app purchase. Rechentrainer asks for nothing beyond the download.

Rechentrainer ships an update every 2 months, 4 Plus 4 monthly. The most recent releases landed on June 4, 2026 and July 24, 2026 respectively.

## The numbers

| Metric | Rechentrainer | 4 Plus 4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/4-plus-4/id1602292243/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | Free |
| Size | 7 MB | 38 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) | [Patrick Koehnen](https://appshunter.io/developer/431219217) |

## 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


### 4 Plus 4

[App page](https://appshunter.io/ios/app/4-plus-4/id1602292243)

This app offers a clear, step-by-step approach to learning mathematics. It features structured modules for number basics, arithmetic, and fractions, with playful sections to apply learned concepts. Designed to make math understandable and enjoyable, it's ideal for beginners and for refreshing knowledge.

**Highlights:** Clear learning modules, Step-by-step guidance, Structured practice, Playful application sections, Progress tracking, Ad-free experience

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Inclusive | $1.99 | one-time |


## Frequently asked questions

### Is Rechentrainer free?

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

### Is 4 Plus 4 free?

4 Plus 4 is free to download, with in-app purchases available.

### Do Rechentrainer or 4 Plus 4 have ads?

Neither Rechentrainer nor 4 Plus 4 shows ads.

### Which is updated more often, Rechentrainer or 4 Plus 4?

Rechentrainer ships an update every 2 months, and 4 Plus 4 monthly. Most recently, Rechentrainer was updated on June 4, 2026 and 4 Plus 4 on July 24, 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.*