# Forethumb いろは vs JongKey

The clearest difference is price: JongKey at Free against Forethumb いろは's $0.99. JongKey also leads on update cadence (daily vs every 31 months). Forethumb いろは's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement there is nothing between them.

JongKey is free to download; Forethumb いろは costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Forethumb いろは ships an update every 31 months, JongKey daily. The most recent releases landed on October 25, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Forethumb いろは | JongKey |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 58.3% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 31 months | **Daily** |
| Monetization | Paid | — |
| Size | 37 MB | 6 MB |
| Requires iOS | **16.4** | 17.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Takuto Nakamura](https://appshunter.io/developer/1203150472) | [Yuki Takeda](https://appshunter.io/developer/1021096508) |

## What reviewers say

### Forethumb いろは

[App page](https://appshunter.io/ios/app/forethumb/id1351876497)

This app enables Japanese Morse code input on your iOS device. Once you memorize the codes, you can type even with your eyes closed. It supports single-key or paddle input with audible feedback and customizable spacing.

**Highlights:** Japanese Morse code input, Single-key or paddle input, Audible Morse feedback, Customizable space intervals, Swipe gestures for delete/space

**Features:** Vision Pro support

**In-app purchases:** none


### JongKey

[App page](https://appshunter.io/ios/app/jongkey-mahjong-keyboard/id6748846911)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Forethumb いろは free?

Forethumb いろは costs $0.99, with no in-app purchases.

### Is JongKey free?

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

### Do Forethumb いろは or JongKey have ads?

JongKey shows ads; Forethumb いろは does not.

### Which is updated more often, Forethumb いろは or JongKey?

Forethumb いろは ships an update every 31 months, and JongKey daily. Most recently, Forethumb いろは was updated on October 25, 2026 and JongKey on October 11, 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.*