# VSimulator vs JOS

The clearest difference is update cadence: VSimulator at every 6 weeks against JOS's every 7 months. VSimulator also leads on iOS requirement (11.0 vs 16.0). 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.

VSimulator ships an update every 6 weeks, JOS every 7 months. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | VSimulator | JOS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 7 months |
| Size | 108 MB | 8 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | 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

### VSimulator

[App page](https://appshunter.io/ios/app/vsimulator/id1601764149)

**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 VSimulator free?

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

### Is JOS free?

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

### Do VSimulator or JOS have ads?

Neither VSimulator nor JOS shows ads.

### Which is updated more often, VSimulator or JOS?

VSimulator ships an update every 6 weeks, and JOS every 7 months. Most recently, VSimulator was updated on October 25, 2026 and JOS on October 28, 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.*