# Trigonométrie vs Cabri Express Primary

The clearest difference is device support: Cabri Express Primary at 4 against Trigonométrie's 1. Trigonométrie's advantage is iOS requirement (10.0 vs 14.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Trigonométrie ships an update every 4 months, Cabri Express Primary every 2 months. The most recent releases landed on October 19, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Trigonométrie | Cabri Express Primary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 24 MB | 101 MB |
| Requires iOS | **10.0** | 14.0 |
| Devices | iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 12+ |
| Developer | [Christophe Auclair](https://appshunter.io/developer/1333526155) | [Cabrilog SAS](https://appshunter.io/developer/1058047739) |

## What reviewers say

### Trigonométrie

[App page](https://appshunter.io/ios/app/trigonometrie/id1442521895)

**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 Trigonométrie free?

Trigonométrie 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 Trigonométrie or Cabri Express Primary have ads?

Neither Trigonométrie nor Cabri Express Primary shows ads.

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

Trigonométrie ships an update every 4 months, and Cabri Express Primary every 2 months. Most recently, Trigonométrie was updated on October 19, 2026 and Cabri Express Primary on October 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.*