# Irisの公式アプリ vs FT Smart Key

The clearest difference is update cadence: FT Smart Key at fortnightly against Irisの公式アプリ's every 82 months. Irisの公式アプリ's advantage is iOS requirement (12.0 vs 15.0). 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.

Irisの公式アプリ ships an update every 82 months, FT Smart Key fortnightly. The most recent releases landed on September 9, 2026 and May 17, 2026 respectively.

## The numbers

| Metric | Irisの公式アプリ | FT Smart Key |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 82 months | **Fortnightly** |
| Size | 16 MB | 3 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [YUJI ENDO](https://appshunter.io/developer/1448437813) | [Haudi, Inc.](https://appshunter.io/developer/1694190484) |

## What reviewers say

### Irisの公式アプリ

[App page](https://appshunter.io/ios/app/iris/id1448437814)

**Features:** macOS Compatibility

**In-app purchases:** none


### FT Smart Key

[App page](https://appshunter.io/ios/app/ft-smart-key/id6738711134)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Irisの公式アプリ free?

Irisの公式アプリ is free to download, with no in-app purchases.

### Is FT Smart Key free?

FT Smart Key is free to download, with no in-app purchases.

### Do Irisの公式アプリ or FT Smart Key have ads?

Neither Irisの公式アプリ nor FT Smart Key shows ads.

### Which is updated more often, Irisの公式アプリ or FT Smart Key?

Irisの公式アプリ ships an update every 82 months, and FT Smart Key fortnightly. Most recently, Irisの公式アプリ was updated on September 9, 2026 and FT Smart Key on May 17, 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.*