# Geometry Stash vs Centum Aiqu

Geometry Stash and Centum Aiqu are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Geometry Stash ships an update every 6 weeks, Centum Aiqu monthly. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Geometry Stash | Centum Aiqu |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (11 ratings)](https://appshunter.io/ios/app/geometry-stash/id324651852/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | Free | — |
| Size | 3 MB | 98 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Anson Liu](https://appshunter.io/developer/1024660369) | [Tushar Sinha](https://appshunter.io/developer/1500627353) |

## What reviewers say

### Geometry Stash

[App page](https://appshunter.io/ios/app/geometry-stash/id324651852)

Access geometry theorems, postulates, and corollaries with descriptions and diagrams. Create and share custom slides with a built-in editor, exporting them in various formats. Ideal for students and educators needing a portable reference.

**Highlights:** Geometry theorem reference, Diagrams for geometric terms, Custom slide creation editor, Vector graphic slide export, iOS Spotlight Search integration, Slide Over and Split View support, Bulk slide import for educators

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Very useful reference
- 👍 Handy for studying
- 👍 Quick navigation
- 👍 Clear explanations
- 👍 Good diagrams

**What reviewers complain about**

- 🐛 Missing formulas/theorems
- 🐛 Not powerful enough
- 🐛 Simple design
- 🐛 Not a teaching device
- 🐛 Needs more definitions

**Reported bugs**

- Wrong theorems
- Minor bugs fixed

**Requested features**

- More detailed illustrations
- More theorems
- More definitions of terms
- More activities for students
- Interactive elements


### Centum Aiqu

[App page](https://appshunter.io/ios/app/centum-aiqu/id6480175807)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Geometry Stash free?

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

### Is Centum Aiqu free?

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

### Do Geometry Stash or Centum Aiqu have ads?

Neither Geometry Stash nor Centum Aiqu shows ads.

### Which is updated more often, Geometry Stash or Centum Aiqu?

Geometry Stash ships an update every 6 weeks, and Centum Aiqu monthly. Most recently, Geometry Stash was updated on October 15, 2026 and Centum Aiqu on October 7, 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.*