# ONOS vs kostbar READY

The clearest difference is update cadence: ONOS at every 3 days against kostbar READY's every 2 weeks. 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.

ONOS ships an update every 3 days, kostbar READY every 2 weeks. The most recent releases landed on October 20, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | ONOS | kostbar READY |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 weeks |
| Size | 59 MB | 7 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mazin Shamaly](https://appshunter.io/developer/1829111565) | [webbill IT Consulting GmbH](https://appshunter.io/developer/1540992026) |

## What reviewers say

### ONOS

[App page](https://appshunter.io/ios/app/onos/id6763065504)

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

**In-app purchases:** none


### kostbar READY

[App page](https://appshunter.io/ios/app/kostbar-ready/id6775419273)

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

**In-app purchases:** none


## Frequently asked questions

### Is ONOS free?

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

### Is kostbar READY free?

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

### Do ONOS or kostbar READY have ads?

Neither ONOS nor kostbar READY shows ads.

### Which is updated more often, ONOS or kostbar READY?

ONOS ships an update every 3 days, and kostbar READY every 2 weeks. Most recently, ONOS was updated on October 20, 2026 and kostbar READY on October 18, 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.*