# Instant Reading vs Eye Disease Simulator

The clearest difference is price: Eye Disease Simulator at Free against Instant Reading's $2.99. Eye Disease Simulator also leads on update cadence (every 2 months vs every 28 months). Instant Reading's advantage is iOS requirement (12.0 vs 17.4). On ads, in-app purchases and device support there is nothing between them.

Eye Disease Simulator is free to download; Instant Reading costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Instant Reading ships an update every 28 months, Eye Disease Simulator every 2 months. The most recent releases landed on October 11, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Instant Reading | Eye Disease Simulator |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 2 months** |
| Size | 3 MB | 2 MB |
| Requires iOS | **12.0** | 17.4 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Roberto De Lorenzo](https://appshunter.io/developer/692760870) | [My Call Bag LLC](https://appshunter.io/developer/1243282862) |

## What reviewers say

### Instant Reading

[App page](https://appshunter.io/ios/app/instant-reading/id1447814060)

**Features:** macOS Compatibility

**In-app purchases:** none


### Eye Disease Simulator

[App page](https://appshunter.io/ios/app/eye-disease-simulator/id6664054188)

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

**In-app purchases:** none


## Frequently asked questions

### Is Instant Reading free?

Instant Reading costs $2.99, with no in-app purchases.

### Is Eye Disease Simulator free?

Eye Disease Simulator is free to download, with no in-app purchases.

### Do Instant Reading or Eye Disease Simulator have ads?

Neither Instant Reading nor Eye Disease Simulator shows ads.

### Which is updated more often, Instant Reading or Eye Disease Simulator?

Instant Reading ships an update every 28 months, and Eye Disease Simulator every 2 months. Most recently, Instant Reading was updated on October 11, 2026 and Eye Disease Simulator on October 25, 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.*