iTorsion vs Strab Tables
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iTorsion
This medical app simplifies diagnosing ocular torsion using just a smartphone and red/green glasses. It offers greater precision than traditional methods, providing extorsion and intorsion measurements for each eye after a patient test.
- Ocular torsion diagnosis
- Smartphone-based testing
- Red/green glasses compatibility
- Precise measurement
- Extorsion and intorsion calculation
- Customizable color values
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iTorsion seeks to make the diagnosis of ocular torsion a simpler and easier process for both doctors and their patients. While traditional diagnostic methods require using special equipment (e.g., Double Maddox Rod) that often lacks precision, iTorsion only requires a smartphone and red/green glasses leading to much greater precision. This application is intended for use by doctors, and not for self-diagnosis by patients. Usage of the application will require standard red-green glasses to filter out colors from each eye. The specific color values can be tailored in the app to fit the specific requirements for the display and the glasses. The smartphone should be held on a level surface as the patient interacts with it. The patient should see predominantly one of the lines out of each eye, and will be asked to make the lines parallel with each other, as well as to the ground. After finishing the test, a screen will indicate the degree of extorsion and intorsion for each of the patient’s eyes.
Strab Tables
Create, customize, and share surgical dosing tables for strabismus procedures. Supports esotropia, exotropia, vertical deviations, and other custom surgical types. Facilitates easy information sharing among medical professionals and trainees.
- Customizable surgical dosing tables
- Support for esotropia, exotropia, and vertical deviations
- Create tables for custom procedures
- Share tables with colleagues
- Information sharing for trainees
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Store and share fully customizable strabismus surgical dosing tables and more. Users are able to create and modify tables for surgery for esotropia, exotropia, and vertical deviations. There is also support for storing any other custom type of procedure as well. Tables can be shared with other users allowing easy access to information sharing amongst colleagues and trainees.
Screenshots
Verdict
The clearest difference is update cadence: iTorsion at every 3 months against Strab Tables's every 14 months. iTorsion also leads on device support (3 vs 1) and iOS requirement (10.3 vs 17.0). On price, rating, ratings volume and ads 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for iTorsion against 5.0 for Strab Tables. Both are backed by a comparable volume of ratings — 6 and 4 respectively.
iTorsion ships an update every 3 months, Strab Tables every 14 months. The most recent releases landed on October 12, 2026 and October 2, 2026 respectively.
| Parameter | iTorsion | Strab Tables |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) | 5.0 (4 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 6 — better | 4 |
| Update frequency | Every 3 months — better | Every 14 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 10.3 — better | 17.0 |
| Further details — not scored | ||
| Size | 17 MB | 2 MB |
| Age rating | 17+ | 12+ |
| Developer | Regents of the University of Minnesota | Patrick Burke |
Customer experience
iTorsion
Strab Tables
In-app purchases
iTorsion
No in-app purchases
Strab Tables
No in-app purchases







