# Twenty frame for iPad vs KOMBI

The clearest difference is price: KOMBI at Free against Twenty frame for iPad's $3.99. KOMBI also leads on update cadence (every 5 months vs every 13 months). Twenty frame for iPad's advantage is iOS requirement (6.0 vs 11.0). On ads, in-app purchases and device support there is nothing between them.

KOMBI is free to download; Twenty frame for iPad costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Twenty frame for iPad ships an update every 13 months, KOMBI every 5 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Twenty frame for iPad | KOMBI |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/twenty-frame-for-ipad/id556083423/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 5 months** |
| Monetization | Paid | — |
| Size | 18 MB | 104 MB |
| Requires iOS | **6.0** | 11.0 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Christian Urff](https://appshunter.io/developer/415894463) | [Karina Hoeveler](https://appshunter.io/developer/1626071083) |

## What reviewers say

### Twenty frame for iPad

[App page](https://appshunter.io/ios/app/twenty-frame-for-ipad/id556083423)

This virtual math manipulative helps children understand basic addition and subtraction through interactive exploration. Users can manipulate double-sided counters in a five-structured twenty frame to visualize mathematical concepts, aiding comprehension, especially for those with dyscalculia.

**Highlights:** Virtual math manipulative, Explore addition and subtraction, Manipulate double-sided counters, Visualize mathematical concepts, Supports children with dyscalculia

**Features:** macOS Compatibility

**In-app purchases:** none


### KOMBI

[App page](https://appshunter.io/ios/app/kombi/id1626071081)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Twenty frame for iPad free?

Twenty frame for iPad costs $3.99, with no in-app purchases.

### Is KOMBI free?

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

### Do Twenty frame for iPad or KOMBI have ads?

Neither Twenty frame for iPad nor KOMBI shows ads.

### Which is updated more often, Twenty frame for iPad or KOMBI?

Twenty frame for iPad ships an update every 13 months, and KOMBI every 5 months. Most recently, Twenty frame for iPad was updated on November 1, 2026 and KOMBI on November 3, 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.*