# Number Line vs Rechenfeld

The clearest difference is review sentiment: Number Line at 60% against Rechenfeld's 50%. Number Line also leads on device support (3 vs 1) and iOS requirement (8.0 vs 17.6). Rechenfeld's advantage is price ($0.99 vs $1.99). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

Number Line costs $1.99 and Rechenfeld $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Number Line ships an update every 6 months, Rechenfeld every 5 months. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Number Line | Rechenfeld |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/number-line-elementary-math/id944786903/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | **60.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 months** |
| Monetization | Paid | Paid |
| Size | 37 MB | 17 MB |
| Requires iOS | **8.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Simon Storz](https://appshunter.io/developer/924848267) | [Christian Urff](https://appshunter.io/developer/415894463) |

## What reviewers say

### Number Line

[App page](https://appshunter.io/ios/app/number-line-elementary-math/id944786903)

This educational app helps young learners grasp the concept of number scales and ordering. It features interactive game modes where children drag numbers to their correct positions on a number line or identify numbers based on their location. Adjustable difficulty and number ranges cater to different learning levels.

**Highlights:** Number line visualization, Drag and drop number placement, Identify number by position, Adjustable difficulty, Customizable number ranges, High score tracking

**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 Number Line free?

Number Line costs $1.99, with no in-app purchases.

### Is Rechenfeld free?

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

### Do Number Line or Rechenfeld have ads?

Neither Number Line nor Rechenfeld shows ads.

### Which is updated more often, Number Line or Rechenfeld?

Number Line ships an update every 6 months, and Rechenfeld every 5 months. Most recently, Number Line was updated on October 12, 2026 and Rechenfeld on October 7, 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.*