# Geometry AR vs Cal

The clearest difference is price: Cal at Free against Geometry AR's $1.99. Cal also leads on update cadence (every 3 weeks vs every 38 months). Geometry AR's advantage is iOS requirement (12.0 vs 15.1). On ads, in-app purchases and device support there is nothing between them.

Cal is free to download; Geometry AR costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Geometry AR ships an update every 38 months, Cal every 3 weeks. The most recent releases landed on September 8, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Geometry AR | Cal |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 29 MB | 63 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 17+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [University of California, Irvine](https://appshunter.io/developer/643200027) |

## What reviewers say

### Geometry AR

[App page](https://appshunter.io/ios/app/geometry-ar/id1329101716)

Explore geometric shapes in 3D with augmented reality. This app allows users to view and learn about over 25 planar and solid figures by interacting with them in their own space. Features include audio narration and detailed information screens for each shape.

**Highlights:** Augmented Reality (AR) viewing, Interactive 3D geometric figures, Audio narration of information, Detailed information screens, Over 25 geometric figures included, Suitable for classroom use

**Features:** macOS Compatibility

**In-app purchases:** none


### Cal

[App page](https://appshunter.io/ios/app/cal-bridge-program/id6475701864)

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

**In-app purchases:** none


## Frequently asked questions

### Is Geometry AR free?

Geometry AR costs $1.99, with no in-app purchases.

### Is Cal free?

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

### Do Geometry AR or Cal have ads?

Neither Geometry AR nor Cal shows ads.

### Which is updated more often, Geometry AR or Cal?

Geometry AR ships an update every 38 months, and Cal every 3 weeks. Most recently, Geometry AR was updated on September 8, 2026 and Cal on September 17, 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.*