# OSSU vs iChidori

OSSU and iChidori are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

OSSU ships an update every 4 months, iChidori every 5 months. The most recent releases landed on October 25, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | OSSU | iChidori |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 5 months |
| Size | 40 MB | 13 MB |
| Requires iOS | 14.0 | **13.4** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Raon Corp.](https://appshunter.io/developer/1851653875) | [AITOYA Inc.](https://appshunter.io/developer/1480822104) |

## What reviewers say

### OSSU

[App page](https://appshunter.io/ios/app/ossu/id1509242120)

**Features:** macOS Compatibility

**In-app purchases:** none


### iChidori

[App page](https://appshunter.io/ios/app/ichidori-tracker/id1558402079)

**In-app purchases:** none


## Frequently asked questions

### Is OSSU free?

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

### Is iChidori free?

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

### Do OSSU or iChidori have ads?

Neither OSSU nor iChidori shows ads.

### Which is updated more often, OSSU or iChidori?

OSSU ships an update every 4 months, and iChidori every 5 months. Most recently, OSSU was updated on October 25, 2026 and iChidori on October 10, 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.*