# IRIS vs 墊腳石

The clearest difference is ads: IRIS at none against 墊腳石's shown. 墊腳石's advantage is iOS requirement (13.0 vs 17.0). On price, update cadence, 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.

IRIS ships an update every 3 weeks, 墊腳石 every 4 weeks. The most recent releases landed on October 14, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | IRIS | 墊腳石 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id1578442286/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 14.3% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Size | 104 MB | 41 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 12+ | 9+ |
| Developer | [艾莉詩服飾股份有限公司](https://appshunter.io/developer/1447468943) | [STEPPING STONE LIBRARY CO., LTD.](https://appshunter.io/developer/1519709550) |

## What reviewers say

### IRIS

[App page](https://appshunter.io/ios/app/iris/id1447468944)

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

**In-app purchases:** none


### 墊腳石

[App page](https://appshunter.io/ios/app/id1578442286)

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

**In-app purchases:** none


## Frequently asked questions

### Is IRIS free?

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

### Is 墊腳石 free?

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

### Do IRIS or 墊腳石 have ads?

墊腳石 shows ads; IRIS does not.

### Which is updated more often, IRIS or 墊腳石?

IRIS ships an update every 3 weeks, and 墊腳石 every 4 weeks. Most recently, IRIS was updated on October 14, 2026 and 墊腳石 on October 21, 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.*