# Triangle Sketch vs Retrieve

The clearest difference is price: Retrieve at Free against Triangle Sketch's $0.99. Retrieve also leads on update cadence (every 2 days vs monthly). Triangle Sketch's advantage is in-app purchases (none vs 1) and iOS requirement (17.6 vs 26.5). On ads and device support there is nothing between them.

Retrieve is free to download; Triangle Sketch costs $0.99 up front. Retrieve sells 1 one-off in-app purchase. Triangle Sketch asks for nothing beyond the download.

Triangle Sketch ships an update monthly, Retrieve every 2 days. The most recent releases landed on October 2, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Triangle Sketch | Retrieve |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/triangle-sketch/id6795052381/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | Paid | — |
| Size | 5 MB | 5 MB |
| Requires iOS | **17.6** | 26.5 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Eduardo Longoria Alaniz](https://appshunter.io/developer/6795052383) | [Blackhook Group LLC](https://appshunter.io/developer/6782197776) |

## What reviewers say

### Triangle Sketch

[App page](https://appshunter.io/ios/app/triangle-sketch/id6795052381)

This geometry tool allows users to draw and manipulate triangles on a graph. It provides measurements, allows editing of sides and angles, and displays various triangle facts and properties. It's designed to help students visualize geometric concepts.

**Highlights:** Draw triangles on a graph, Edit side lengths and angles, View triangle measurements, Explore triangle properties, Use right-triangle trig tools, Customize display options

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

**In-app purchases:** none


### Retrieve

[App page](https://appshunter.io/ios/app/retrieve-flashcards/id6796848437)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Retrieve | $9.99 | one-time |


## Frequently asked questions

### Is Triangle Sketch free?

Triangle Sketch costs $0.99, with no in-app purchases.

### Is Retrieve free?

Retrieve is free to download, with in-app purchases available.

### Do Triangle Sketch or Retrieve have ads?

Neither Triangle Sketch nor Retrieve shows ads.

### Which is updated more often, Triangle Sketch or Retrieve?

Triangle Sketch ships an update monthly, and Retrieve every 2 days. Most recently, Triangle Sketch was updated on October 2, 2026 and Retrieve on October 18, 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.*