# Ví Vimass vs JSI One

The clearest difference is iOS requirement: JSI One at 13.0 against Ví Vimass's 15. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Ví Vimass ships an update every 2 weeks, JSI One every 3 weeks. The most recent releases landed on October 13, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Ví Vimass | JSI One |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Size | 232 MB | 213 MB |
| Requires iOS | 15 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ViMASS Corp](https://appshunter.io/developer/824526949) | [Công Ty TNHH Chứng Khoán Nhật Bản](https://appshunter.io/developer/1835855177) |

## What reviewers say

### Ví Vimass

[App page](https://appshunter.io/ios/app/vi-vimass/id6448410181)

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

**In-app purchases:** none


### JSI One

[App page](https://appshunter.io/ios/app/jsi-one/id6751571648)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Ví Vimass free?

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

### Is JSI One free?

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

### Do Ví Vimass or JSI One have ads?

Neither Ví Vimass nor JSI One shows ads.

### Which is updated more often, Ví Vimass or JSI One?

Ví Vimass ships an update every 2 weeks, and JSI One every 3 weeks. Most recently, Ví Vimass was updated on October 13, 2026 and JSI One on September 29, 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.*