# Ossia VMS vs Kasha Amplifiers

The clearest difference is update cadence: Kasha Amplifiers at every 2 months against Ossia VMS's every 23 months. Ossia VMS's advantage is iOS requirement (13.0 vs 15.1). 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.

Ossia VMS ships an update every 23 months, Kasha Amplifiers every 2 months. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Ossia VMS | Kasha Amplifiers |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 2 months** |
| Size | 56 MB | 18 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PROVISION-ISR LIMITED](https://appshunter.io/developer/1460340592) | [Kasha Amplifiers Inc](https://appshunter.io/developer/1585006183) |

## What reviewers say

### Ossia VMS

[App page](https://appshunter.io/ios/app/ossia-vms/id1337583532)

**Features:** Vision Pro support

**In-app purchases:** none


### Kasha Amplifiers

[App page](https://appshunter.io/ios/app/kasha-amplifiers/id6751130107)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ossia VMS free?

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

### Is Kasha Amplifiers free?

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

### Do Ossia VMS or Kasha Amplifiers have ads?

Neither Ossia VMS nor Kasha Amplifiers shows ads.

### Which is updated more often, Ossia VMS or Kasha Amplifiers?

Ossia VMS ships an update every 23 months, and Kasha Amplifiers every 2 months. Most recently, Ossia VMS was updated on October 7, 2026 and Kasha Amplifiers on October 9, 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.*