# Rechenfeld vs Nim

The clearest difference is price: Nim at Free against Rechenfeld's $0.99. Nim also leads on iOS requirement (13.0 vs 17.6). On update cadence, ads, in-app purchases and device support there is nothing between them.

Nim is free to download; Rechenfeld costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Rechenfeld ships an update every 5 months, Nim every 6 months. The most recent releases landed on September 21, 2026 and May 15, 2026 respectively.

## The numbers

| Metric | Rechenfeld | Nim |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 6 months |
| Monetization | Paid | — |
| Size | 17 MB | 1 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPad | **iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Christian Urff](https://appshunter.io/developer/415894463) | [Heiko Etzold](https://appshunter.io/developer/715739131) |

## What reviewers say

### Rechenfeld

[App page](https://appshunter.io/ios/app/rechenfeld/id1558366734)

This app provides a visual aid for understanding addition and subtraction within various number ranges. It's designed to help children, especially those with learning difficulties, grasp mathematical concepts through interactive manipulation of virtual objects.

**Highlights:** Visualizes addition and subtraction, Supports number ranges up to 1000, Interactive manipulation of virtual tiles, Helps develop number sense and strategies, Illustrates decimal system concepts, Displays problems on number line and arrow diagrams

**Features:** macOS Compatibility

**In-app purchases:** none


### Nim

[App page](https://appshunter.io/ios/app/nim/id1590325148)

**In-app purchases:** none


## Frequently asked questions

### Is Rechenfeld free?

Rechenfeld costs $0.99, with no in-app purchases.

### Is Nim free?

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

### Do Rechenfeld or Nim have ads?

Neither Rechenfeld nor Nim shows ads.

### Which is updated more often, Rechenfeld or Nim?

Rechenfeld ships an update every 5 months, and Nim every 6 months. Most recently, Rechenfeld was updated on September 21, 2026 and Nim on May 15, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*