Forethumb vs JongKey
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Forethumb
This keyboard app allows users to input text on their iOS devices using Morse code. It offers single-key or paddle input methods, with options for sound feedback and customizable gap lengths. It supports alphabets, numbers, some symbols, and Japanese characters.
- Morse code input (single key or paddle)
- Sound feedback on input
- Swipe gestures for delete/space
- Customizable gap length
- Supports alphabets, numbers, symbols, Japanese
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Forethumb enables you to input characters on your iOS device with morse code. You can type sentences blindfold, if you memorized morse code for forethumb. [Function] - Character input is possible by single key type or paddle type Morse input. - The sound is played when you input the morse code. - In the case of the single key type, swiping the key to the left will "delete" and swiping to the right will "enter space". - You can change the default gap length. [Functional Limitations] - The characters that you can enter are alphabets, numbers, some symbols, and Japanese. [Attention] - You have to do the additional procedure of Forethumb to use it (Settings -> General -> Keyboard). - Then, you also have to turn on the "Full Access" for Forethumb. * Please don’t worry; The developer does not collect your data at all. [Support] - Please do not hesitate to contact the developer for any defect reports or questions/requests. - The developer will consider any requests about additional function. - The developer may end support for older iOS without notice.
JongKey
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JongKey is a custom keyboard app that makes it easy to input mahjong tiles. Perfect for recording mahjong games, "What to discard?" discussions, and sharing on social media - making mahjong communication more enjoyable and convenient! 【Key Features】 • Easy input for all 34 types of mahjong tiles and tile backs • Supports two output formats: Unicode emoji and MPS notation • Quick input with intuitive tap operations • Supports Japanese, English, and Chinese (Simplified & Traditional) 【How to Use】 1. Add "JongKey" to keyboards in Settings app 2. Switch keyboards by tapping the globe icon in messaging apps 3. Tap mahjong tiles to input 【Output Formats】 • Unicode: Mahjong tile characters (displayed as emoji) • MPS notation: E S W N, 1m 2m 3m etc. (displayed as text) ※Full Access not required. Your input is not transmitted externally.
Screenshots
Verdict
The clearest difference is price: JongKey at Free against Forethumb's $0.99. JongKey also leads on update cadence (daily vs every 2 weeks). Forethumb's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
JongKey is free to download; Forethumb costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Forethumb ships an update every 2 weeks, JongKey daily. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.
| Parameter | Forethumb | JongKey |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.8 (8 ratings) — better | — |
| Positive reviews | 64.3% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 2 weeks | Daily — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.4 — better | 17.6 |
| Further details — not scored | ||
| Size | 71 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Takuto Nakamura | Yuki Takeda |
In-app purchases
Forethumb
No in-app purchases
JongKey
No in-app purchases









