# Zahlenfeld vs ACTIVARO

The clearest difference is price: ACTIVARO at Free against Zahlenfeld's $0.99. ACTIVARO also leads on update cadence (every 3 weeks vs every 2 months) and device support (3 vs 1). Zahlenfeld's advantage is in-app purchases (none vs 1). On ads there is nothing between them.

ACTIVARO is free to download; Zahlenfeld costs $0.99 up front. ACTIVARO sells 1 in-app purchase, starting at $4.49 per month. Zahlenfeld asks for nothing beyond the download.

Zahlenfeld ships an update every 2 months, ACTIVARO every 3 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Zahlenfeld | ACTIVARO |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 12 MB | 2 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Christian Urff](https://appshunter.io/developer/415894463) | [Innotechnia Holding UG (haftungsbeschraenkt)](https://appshunter.io/developer/1616533003) |

## What reviewers say

### Zahlenfeld

[App page](https://appshunter.io/ios/app/zahlenfeld/id1581386267)

This app is a mathematical tool designed to help children develop a deep understanding of structured quantities up to 1000. It visually represents numbers using place value concepts and a number line, aiding in the development of number sense and supporting children with learning difficulties.

**Highlights:** Visualizes numbers up to 1000, Place value representation (ones, tens, hundreds), Interactive number line, Supports understanding of quantities and number relationships, Aids children with dyscalculia, Customizable colors for place values

**Features:** macOS Compatibility

**In-app purchases:** none


### ACTIVARO

[App page](https://appshunter.io/ios/app/activaro/id1616533001)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ACTIVARO Pro | $4.49 | per month |


## Frequently asked questions

### Is Zahlenfeld free?

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

### Is ACTIVARO free?

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

### Do Zahlenfeld or ACTIVARO have ads?

Neither Zahlenfeld nor ACTIVARO shows ads.

### Which is updated more often, Zahlenfeld or ACTIVARO?

Zahlenfeld ships an update every 2 months, and ACTIVARO every 3 weeks. Most recently, Zahlenfeld was updated on October 24, 2026 and ACTIVARO on October 25, 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.*