# SVV vs Ophthalmology & Optometry

The clearest difference is review sentiment: Ophthalmology & Optometry at 61% against SVV's 0%. Ophthalmology & Optometry also leads on update cadence (every 5 days vs every 2 months). SVV's advantage is in-app purchases (none vs 8) and iOS requirement (15.0 vs 17.1). 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. SVV asks for nothing beyond the download.

SVV ships an update every 2 months, Ophthalmology & Optometry every 5 days. The most recent releases landed on September 23, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | SVV | Ophthalmology & Optometry |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (120 ratings)](https://appshunter.io/ios/app/ophthalmology-and-optometry/id6471442410/reviews)** |
| Number of ratings | — | **120** |
| Positive reviews | 0.0% of reviews | **60.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 250 MB |
| Requires iOS | **15.0** | 17.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Kuroda ENT Clinic](https://appshunter.io/developer/1369699677) | [My Call Bag LLC](https://appshunter.io/developer/1243282862) |

## What reviewers say

### SVV

[App page](https://appshunter.io/ios/app/svv/id1471979816)

This app measures your perception of verticality to assess gravity perception and vestibular function. It uses a simple line adjustment task to calculate deviations from the true vertical, aiding in the detection of vestibular asymmetry.

**Highlights:** Measures subjective visual vertical, Evaluates gravity perception, Detects vestibular asymmetry, Adjusts perceived vertical line, Calculates mean deviation and standard deviation, Supports remote and game controllers

**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 SVV free?

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

### Is Ophthalmology & Optometry free?

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

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

Neither SVV nor Ophthalmology & Optometry shows ads.

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

SVV ships an update every 2 months, and Ophthalmology & Optometry every 5 days. Most recently, SVV was updated on September 23, 2026 and Ophthalmology & Optometry on October 27, 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.*