# 1st Calc vs Rechenfeld

The clearest difference is review sentiment: 1st Calc at 100% against Rechenfeld's 50%. 1st Calc also leads on device support (3 vs 1) and iOS requirement (15.6 vs 17.6). Rechenfeld's advantage is update cadence (every 5 months vs every 50 months). On price, ads, in-app purchases and monetization model there is nothing between them.

1st Calc costs $0.99 and Rechenfeld $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

1st Calc ships an update every 50 months, Rechenfeld every 5 months. Both last shipped on September 21, 2026.

## The numbers

| Metric | 1st Calc | Rechenfeld |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | **[3.3 (3 ratings)](https://appshunter.io/ios/app/1st-calc/id546843701/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 50 months | **Every 5 months** |
| Monetization | Paid | Paid |
| Size | 9 MB | 17 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [medienwerkstatt](https://appshunter.io/developer/322110992) | [Christian Urff](https://appshunter.io/developer/415894463) |

## What reviewers say

### 1st Calc

[App page](https://appshunter.io/ios/app/1st-calc/id546843701)

This app provides a visual abacus-style bead frame to help primary school children learn numbers up to 100. It supports addition and subtraction practice, making math more engaging and helping to prevent learning disabilities.

**Highlights:** Abacus-style bead frame, Learn numbers up to 100, Addition and subtraction practice, Customizable bead colors, Optional live cam background

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

**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 1st Calc free?

1st Calc costs $0.99, with no in-app purchases.

### Is Rechenfeld free?

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

### Do 1st Calc or Rechenfeld have ads?

Neither 1st Calc nor Rechenfeld shows ads.

### Which is updated more often, 1st Calc or Rechenfeld?

1st Calc ships an update every 50 months, and Rechenfeld every 5 months. Most recently, 1st Calc was updated on September 21, 2026 and Rechenfeld on September 21, 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.*