# Low Vision Simulator vs JOS

The clearest difference is update cadence: Low Vision Simulator at monthly against JOS's every 7 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Low Vision Simulator ships an update monthly, JOS every 7 months. Both last shipped on October 30, 2026.

## The numbers

| Metric | Low Vision Simulator | JOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (3 ratings)](https://appshunter.io/ios/app/low-vision-simulator/id6480382551/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 7 months |
| Monetization | Free | — |
| Size | 5 MB | 8 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yasushi Nakano](https://appshunter.io/developer/1601764151) | [Japanese Ophthalmological Society](https://appshunter.io/developer/1793038171) |

## What reviewers say

### Low Vision Simulator

[App page](https://appshunter.io/ios/app/low-vision-simulator/id6480382551)

Experience simulated visual impairments like blur, glare, and tunnel vision. This tool helps users understand and share low vision conditions, even capturing photos and videos during simulations. It offers remote control for adjusting effects while previewing.

**Highlights:** Simulates blur, glare, tunnel vision, central scotoma, nystagmus, Reproduces complex visual situations, Shareable low-vision settings, Capture photos and videos during simulation, Remote device connection for effect adjustment, Supports iPhone and iPad

**In-app purchases:** none


### JOS

[App page](https://appshunter.io/ios/app/jos-congress-app/id6741094104)

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

**In-app purchases:** none


## Frequently asked questions

### Is Low Vision Simulator free?

Low Vision Simulator is free to download, with no in-app purchases.

### Is JOS free?

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

### Do Low Vision Simulator or JOS have ads?

Neither Low Vision Simulator nor JOS shows ads.

### Which is updated more often, Low Vision Simulator or JOS?

Low Vision Simulator ships an update monthly, and JOS every 7 months. Most recently, Low Vision Simulator was updated on October 30, 2026 and JOS on October 30, 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.*