# Kavim iBus vs ONI system+

The clearest difference is iOS requirement: ONI system+ at 15.0 against Kavim iBus's 18.6. 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.

Kavim iBus ships an update every 5 weeks, ONI system+ every 2 months. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Kavim iBus | ONI system+ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Size | 11 MB | 177 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ISR](https://appshunter.io/developer/1174205767) | [NAM system a.s.](https://appshunter.io/developer/1156895479) |

## What reviewers say

### Kavim iBus

[App page](https://appshunter.io/ios/app/kavim-ibus/id1391073863)

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

**In-app purchases:** none


### ONI system+

[App page](https://appshunter.io/ios/app/oni-system-plus/id6740395392)

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

**In-app purchases:** none


## Frequently asked questions

### Is Kavim iBus free?

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

### Is ONI system+ free?

ONI system+ is free to download, with no in-app purchases.

### Do Kavim iBus or ONI system+ have ads?

Neither Kavim iBus nor ONI system+ shows ads.

### Which is updated more often, Kavim iBus or ONI system+?

Kavim iBus ships an update every 5 weeks, and ONI system+ every 2 months. Most recently, Kavim iBus was updated on October 24, 2026 and ONI system+ 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.*