# iTorsion vs Ophthalmology & Optometry

The clearest difference is review sentiment: iTorsion at 100% against Ophthalmology & Optometry's 62%. iTorsion also leads on in-app purchases (none vs 8) and rating (5.0 vs 4.7). Ophthalmology & Optometry's advantage is update cadence (every 4 days vs every 3 months) and ratings volume (120 vs 6). On price, ads and device support there is nothing between them.

Both are free to download. Ophthalmology & Optometry sells 8 in-app purchases, starting at $9.99 per month. iTorsion asks for nothing beyond the download.

iTorsion holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Ophthalmology & Optometry has 120 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 100% of iTorsion's written reviews are positive against 62% of Ophthalmology & Optometry's.

iTorsion ships an update every 3 months, Ophthalmology & Optometry every 4 days. The most recent releases landed on November 2, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | iTorsion | Ophthalmology & Optometry |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/itorsion/id1358552637/reviews)** | [4.7 (120 ratings)](https://appshunter.io/ios/app/ophthalmology-and-optometry/id6471442410/reviews) |
| Number of ratings | 6 | **120** |
| Positive reviews | **100.0% of reviews** | 61.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 17 MB | 250 MB |
| Requires iOS | **10.3** | 17.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 17+ | 4+ |
| Developer | [Regents of the University of Minnesota](https://appshunter.io/developer/455216626) | [My Call Bag LLC](https://appshunter.io/developer/1243282862) |

## What reviewers say

### iTorsion

[App page](https://appshunter.io/ios/app/itorsion/id1358552637)

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.

**Highlights:** Ocular torsion diagnosis, Smartphone-based testing, Red/green glasses compatibility, Precise measurement, Extorsion and intorsion calculation, Customizable color values

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

**In-app purchases:** none


### Ophthalmology & Optometry

[App page](https://appshunter.io/ios/app/ophthalmology-and-optometry/id6471442410)

This app transforms your iPhone into a comprehensive digital call bag for healthcare professionals. It offers a wide array of specialized tools for ophthalmology, neurology, optometry, emergency medicine, and internal medicine, leveraging advanced iPhone camera and sensor technology.

**Highlights:** Ophthalmology diagnostic tools, Neurology screening tools, Optometry vision tests, Emergency medicine aids, Internal medicine calculators, LiDAR exophthalmometer, AI Lensometer

**Features:** macOS Compatibility, Apple Watch app, iMessage stickers

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iPad Monthly Subscription | $9.99 | per month |
| Monthly Subscription | $14.99 | per month |
| Annual Subscription | $49.99 | per year |
| Annual Subscription to iPad App | $49.99 | per year |
| 100 Credits | $3.99 | one-time |
| 500 Credits | $19.99 | one-time |
| Lifetime Access to iPad App | $149.99 | one-time |
| My Call Bag | $249.99 | one-time |


## Frequently asked questions

### Is iTorsion free?

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

### Is Ophthalmology & Optometry free?

Ophthalmology & Optometry is free to download, with in-app purchases available.

### Which has better reviews, iTorsion or Ophthalmology & Optometry?

iTorsion is rated higher. iTorsion averages 5.0 out of 5 from 6 ratings, while Ophthalmology & Optometry averages 4.7 from 120 ratings.

### Do iTorsion or Ophthalmology & Optometry have ads?

Neither iTorsion nor Ophthalmology & Optometry shows ads.

### Which is updated more often, iTorsion or Ophthalmology & Optometry?

iTorsion ships an update every 3 months, and Ophthalmology & Optometry every 4 days. Most recently, iTorsion was updated on November 2, 2026 and Ophthalmology & Optometry on November 8, 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.*