# Calculightning 0 vs Rechenfeld

The clearest difference is review sentiment: Calculightning 0 at 100% against Rechenfeld's 50%. Calculightning 0 also leads on device support (3 vs 1) and iOS requirement (8.0 vs 17.6). Rechenfeld's advantage is price ($0.99 vs $2.99). On ads, in-app purchases and monetization model there is nothing between them.

Calculightning 0 costs $2.99 and Rechenfeld $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Calculightning 0 | Rechenfeld |
| --- | --- | --- |
| Price | $2.99 | **$0.99** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 5 months |
| Monetization | Paid | Paid |
| Size | 56 MB | 17 MB |
| Requires iOS | **8.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ernst Klett Verlag GmbH, Stuttgart](https://appshunter.io/developer/751540887) | [Christian Urff](https://appshunter.io/developer/415894463) |

## What reviewers say

### Calculightning 0

[App page](https://appshunter.io/ios/app/calculightning-0/id1475767736)

This educational app helps children practice essential math skills through engaging exercises. Developed with pedagogical expertise, it offers multiple difficulty levels and a vast array of problems for independent learning.

**Highlights:** Award-winning pedagogical method, Practice 6 general task types, Different levels of difficulty, Large pool of tasks, Independent learning

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Calculightning 0 free?

Calculightning 0 costs $2.99, with no in-app purchases.

### Is Rechenfeld free?

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

### Do Calculightning 0 or Rechenfeld have ads?

Neither Calculightning 0 nor Rechenfeld 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.*