Comparison

Reimers App vs Triangle Sketch

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Reimers App

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
Read full description

Reimers App is an educational tool designed for orthopedic surgeons, radiologists, and physiotherapists working with pediatric patients. The app provides fast, accurate measurement of two essential radiological indices for pediatric hip assessment: • Reimers Migration Index (RMI) — quantifies the degree of hip subluxation by comparing the extent of the femoral epiphysis outside the acetabulum. • Acetabular Index (AI) — evaluates the inclination of the acetabular roof as an indicator of acetabular development. How it works: 1. Import a pelvic X-ray directly from your camera or photo library. 2. Position 8 interactive anatomical landmarks (triradiate cartilage, acetabular edge, medial and lateral femoral head — bilaterally). 3. RMI and AI are calculated automatically for both hips. 4. Export the results as an image. Indicated for evaluation of developmental dysplasia of the hip (DDH), cerebral palsy, and other pediatric hip conditions. Available in Portuguese, English, and Spanish. Disclaimer: This app is intended for educational use. Diagnosis and treatment decisions are the sole responsibility of the licensed healthcare professional.

About

Triangle Sketch

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
Read full description

Triangle Sketch is a hands-on geometry tool for drawing and exploring triangles. Draw a triangle with your finger, check its measurements, edit side lengths and angles, move vertices, enter coordinates, and view useful triangle facts. Triangle Sketch helps students see how triangle measurements connect instead of only reading formulas. Features: • Draw triangles directly on a graph • Edit side lengths, angles, and vertex coordinates • Work with any triangles and right triangles • View area, perimeter, triangle type, height, centroid, incircle, and circumcircle • Use right-triangle trig tools • Change units, decimals, colors, grid snapping, and display options • One-time hints help students discover important tools Triangle Sketch is designed for students, teachers, and anyone learning geometry.

Screenshots

Reimers App3 screens
Triangle Sketch4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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

Scorecard3 real differences · 7 level
Reimers App versus Triangle Sketch: the parameters behind the verdict, then further details
ParameterReimers AppTriangle Sketch
PriceFree — better$0.99
Rating—5.0 (1 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings—1 — better
Update frequencyEvery 5 days — betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.017.6 — better
Further details — not scored
Size2 MB5 MB
Age rating4+4+
DeveloperINSTITUTO FISE DE ENSINO E PESQUISA EM ORTOPEDIAEduardo Longoria Alaniz

Customer experience

Reimers App

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Triangle Sketch

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Reimers App

No in-app purchases

None

Triangle Sketch

No in-app purchases

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.

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