# Forethumb いろは vs RadMonJP

The clearest difference is price: RadMonJP at Free against Forethumb いろは's $0.99. RadMonJP also leads on update cadence (every 8 days vs every 31 months). Forethumb いろは's advantage is in-app purchases (none vs 1) and iOS requirement (16.4 vs 26.0). On ads and device support there is nothing between them.

RadMonJP is free to download; Forethumb いろは costs $0.99 up front. RadMonJP sells 1 in-app purchase, starting at $0.99 per month. Forethumb いろは asks for nothing beyond the download.

Forethumb いろは ships an update every 31 months, RadMonJP every 8 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Forethumb いろは | RadMonJP |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 58.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 31 months | **Every 8 days** |
| Monetization | Paid | — |
| Size | 37 MB | 10 MB |
| Requires iOS | **16.4** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Takuto Nakamura](https://appshunter.io/developer/1203150472) | [RR Aware Studio](https://appshunter.io/developer/1439301679) |

## 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


### RadMonJP

[App page](https://appshunter.io/ios/app/radmonjp/id6737837347)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム1ヶ月 | $0.99 | per month |


## Frequently asked questions

### Is Forethumb いろは free?

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

### Is RadMonJP free?

RadMonJP is free to download, with in-app purchases available.

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

Neither Forethumb いろは nor RadMonJP shows ads.

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

Forethumb いろは ships an update every 31 months, and RadMonJP every 8 days. Most recently, Forethumb いろは was updated on November 2, 2026 and RadMonJP on November 3, 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.*