# sketchometry vs Cabri Express Primary

The clearest difference is update cadence: sketchometry at every 10 days against Cabri Express Primary's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

sketchometry ships an update every 10 days, Cabri Express Primary every 2 months. The most recent releases landed on June 25, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | sketchometry | Cabri Express Primary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/sketchometry/id635195332/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 65.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 months |
| Monetization | Free | — |
| Size | 82 MB | 101 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 12+ |
| Developer | [Universitaet Bayreuth](https://appshunter.io/developer/926230632) | [Cabrilog SAS](https://appshunter.io/developer/1058047739) |

## What reviewers say

### sketchometry

[App page](https://appshunter.io/ios/app/sketchometry/id635195332)

This app transforms your finger drawings into precise geometric shapes on your iPhone or iPad. It turns math into an experimental subject, encouraging learners to discover concepts through hands-on interaction rather than presenting pre-made solutions.

**Highlights:** Finger-to-geometry conversion, Dynamic mathematical exploration, Experimental learning approach, Interactive geometric drawing, Supports iPhone and iPad

**Features:** macOS Compatibility

**In-app purchases:** none


### Cabri Express Primary

[App page](https://appshunter.io/ios/app/cabri-express-primary/id1668145657)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is sketchometry free?

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

### Is Cabri Express Primary free?

Cabri Express Primary is free to download, with no in-app purchases.

### Do sketchometry or Cabri Express Primary have ads?

Neither sketchometry nor Cabri Express Primary shows ads.

### Which is updated more often, sketchometry or Cabri Express Primary?

sketchometry ships an update every 10 days, and Cabri Express Primary every 2 months. Most recently, sketchometry was updated on June 25, 2026 and Cabri Express Primary on September 9, 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.*