# Control LITE vs Ophthalmology & Optometry

The clearest difference is in-app purchases: Control LITE at none against Ophthalmology & Optometry's 8. Control LITE also leads on iOS requirement (13.0 vs 17.1). Ophthalmology & Optometry's advantage is update cadence (every 5 days vs every 87 months) and chart position (#141 vs unranked). 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. Control LITE asks for nothing beyond the download.

Control LITE ships an update every 87 months, Ophthalmology & Optometry every 5 days. The most recent releases landed on September 15, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Control LITE | 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 | — | 60.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 87 months | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Best chart rank | — | **#141** |
| Size | 2 MB | 240 MB |
| Requires iOS | **13.0** | 17.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Shemesh Health Solutions PTY Ltd](https://appshunter.io/developer/578849338) | [My Call Bag LLC](https://appshunter.io/developer/1243282862) |

## What reviewers say

### Control LITE

[App page](https://appshunter.io/ios/app/control-lite/id1361955533)

**Features:** macOS Compatibility

**In-app purchases:** none


### Ophthalmology & Optometry

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

**Currently charting:** #141 Top Grossing · Medical (US App Store)

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 to iPad App | $49.99 | per year |
| Annual Subscription | $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 Control LITE free?

Control LITE 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 Control LITE or Ophthalmology & Optometry have ads?

Neither Control LITE nor Ophthalmology & Optometry shows ads.

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

Control LITE ships an update every 87 months, and Ophthalmology & Optometry every 5 days. Most recently, Control LITE was updated on September 15, 2026 and Ophthalmology & Optometry on October 15, 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.*