# Glaucoma Calc vs Cataract Lens

The clearest difference is price: Cataract Lens at Free against Glaucoma Calc's $2.99. Cataract Lens also leads on update cadence (every 2 months vs every 10 months) and iOS requirement (12.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Cataract Lens is free to download; Glaucoma Calc costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Glaucoma Calc ships an update every 10 months, Cataract Lens every 2 months. The most recent releases landed on October 24, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Glaucoma Calc | Cataract Lens |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/glaucoma-calc/id334351011/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 2 months** |
| Monetization | Paid | — |
| Size | 7 MB | 46 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Optical Directions Consulting](https://appshunter.io/developer/309309098) | [Chun-Huei Liu](https://appshunter.io/developer/1657411874) |

## What reviewers say

### Glaucoma Calc

[App page](https://appshunter.io/ios/app/glaucoma-calc/id334351011)

Estimate the 5-year risk of glaucoma development in patients with ocular hypertension. This tool simplifies data entry for multiple perimeters and offers quick calculations on Apple Watch.

**Highlights:** Glaucoma risk estimation, Ocular hypertension assessment, Supports Humphrey, Medmont, Octopus perimeters, Single-screen interface, Apple Watch app integration, Independent Apple Watch functionality

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Cataract Lens

[App page](https://appshunter.io/ios/app/cataract-lens/id6447101876)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Glaucoma Calc free?

Glaucoma Calc costs $2.99, with no in-app purchases.

### Is Cataract Lens free?

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

### Do Glaucoma Calc or Cataract Lens have ads?

Neither Glaucoma Calc nor Cataract Lens shows ads.

### Which is updated more often, Glaucoma Calc or Cataract Lens?

Glaucoma Calc ships an update every 10 months, and Cataract Lens every 2 months. Most recently, Glaucoma Calc was updated on October 24, 2026 and Cataract Lens on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*