9 Gaze vs iTorsion
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
9 Gaze
This app helps document eye motility and strabismus in nine cardinal positions. It offers an on-screen guide for consistent eye positioning and automatically creates composite images for easy exporting. Users can add strabismus measurements and email or save images for medical records.
- Document eye motility and strabismus
- On-screen guide for eye positioning
- Automatic composite image creation
- Add strabismus measurements
- Selfie or standard mode
- Email or save images
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9 Gaze is an easy, quick, and efficient way to document eye motility and strabismus in the nine cardinal positions of gaze (and 2 head tilts, abnormal head position). The app provides an on-screen guide for eye positioning to assist with image consistency through all photographs. 9Gaze app automatically creates a composite image of the photographs for easy exporting. Designed for a touch-screen interface, you can also quickly add strabismus measurements to your photograph or as a stand-alone image. You can email the images to yourself for importing into your record or save to your camera roll. Features: - Selfie mode or standard mode - On-screen guide for placement of eyes (with autocrop) - Automatic creation of the composite image of all 9(+2) positions of gaze - Ability to skip gaze directions (or skip to end) - Re-take any picture - Turn flash on or off - Landscape and portrait modes - Ability to document name, ID number, date of birth, and date of picture Save time with 9 Gaze! Disclaimer: No information or photos are ever saved within the app. It is the user's responsibility to protect any and all protected health information (PHI) obtained by the user. If you choose to save images to camera roll, it is highly suggested to encrypt your phone and turn off iCloud photo backup. When emailing photos, please make sure your email is HIPAA secure. This is not a medical device. Do not use app to diagnose or treat any medical conditions.
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.
Screenshots
Verdict
The clearest difference is rating: iTorsion at 5.0 against 9 Gaze's 4.6. iTorsion also leads on review sentiment (100% vs 86%) and iOS requirement (10.3 vs 13.0). 9 Gaze's advantage is ratings volume (22 vs 6). On price, update cadence, ads and in-app purchases 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.
iTorsion holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 22 and 6 respectively. Written reviews point the same way: 86% of 9 Gaze's written reviews are positive against 100% of iTorsion's.
9 Gaze ships an update every 2 months, iTorsion every 3 months. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.
| Parameter | 9 Gaze | iTorsion |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (22 ratings) | 5.0 (6 ratings) — better |
| Positive reviews | 85.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 22 — better | 6 |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 10.3 — better |
| Further details — not scored | ||
| Size | 36 MB | 17 MB |
| Age rating | 12+ | 17+ |
| Developer | See Vision, LLC | Regents of the University of Minnesota |
Customer experience
9 Gaze
iTorsion
In-app purchases
9 Gaze
No in-app purchases
iTorsion
No in-app purchases
Questions
Is 9 Gaze free?
Is iTorsion free?
Which has better reviews, 9 Gaze or iTorsion?
Do 9 Gaze or iTorsion have ads?
Which is updated more often, 9 Gaze or iTorsion?
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