# Reimers App vs Triangle Sketch

The clearest difference is price: Reimers App at Free against Triangle Sketch's $0.99. Reimers App also leads on update cadence (every 5 days vs monthly). Triangle Sketch's advantage is iOS requirement (17.6 vs 26.0). On ads, in-app purchases, monetization model and device support there is nothing between them.

Reimers App is free to download; Triangle Sketch costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Reimers App ships an update every 5 days, Triangle Sketch monthly. Both last shipped on October 31, 2026.

## The numbers

| Metric | Reimers App | Triangle Sketch |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/triangle-sketch/id6795052381/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Monthly |
| Monetization | Paid | Paid |
| Size | 2 MB | 5 MB |
| Requires iOS | 26.0 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [INSTITUTO FISE DE ENSINO E PESQUISA EM ORTOPEDIA](https://appshunter.io/developer/1892053041) | [Eduardo Longoria Alaniz](https://appshunter.io/developer/6795052383) |

## What reviewers say

### Reimers App

[App page](https://appshunter.io/ios/app/reimers-app/id6761915841)

This educational tool assists orthopedic surgeons, radiologists, and physiotherapists in quickly and accurately measuring key radiological indices for pediatric hip assessment. It allows for easy import of X-rays, interactive landmark positioning, and automatic calculation and export of results.

**Highlights:** Reimers Migration Index (RMI) calculation, Acetabular Index (AI) calculation, Import X-rays from camera or library, Interactive anatomical landmark positioning, Automatic calculation for both hips, Export results as an image

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Reimers App free?

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

### Is Triangle Sketch free?

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

### Do Reimers App or Triangle Sketch have ads?

Neither Reimers App nor Triangle Sketch shows ads.

### Which is updated more often, Reimers App or Triangle Sketch?

Reimers App ships an update every 5 days, and Triangle Sketch monthly. Most recently, Reimers App was updated on October 31, 2026 and Triangle Sketch on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*