# thumbzonekeyboard — Thumb-Optimized Keyboard

> Thumb-Optimized Keyboard (iPhone/iPad app by JAESIK YOUN.)

- Source: https://appshunter.io/ios/app/thumbzonekeyboard/id6757674245 (this page in markdown: same URL + `.md`)
- Developer: [JAESIK YOUN](https://appshunter.io/developer/1833834844)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 18.5 · 9 MB
- Languages: English
- Released: 2026-01-12
- Data updated: 2026-06-29
- User reviews in markdown: https://appshunter.io/ios/app/thumbzonekeyboard/id6757674245/reviews.md

## What is thumbzonekeyboard?

This keyboard is designed for real mobile users who type with one thumb.

It supports standard mode, left-handed mode, and mirror mode so you can choose the layout that feels most comfortable for your hand.

The smart thumb layout reduces finger movement and helps you type faster with less effort.

* Vowels and consonants are placed in separate zones, and consonants are grouped by similar pronunciation to make keys easier to find with one thumb.

There is no learning curve. You can start typing naturally from the first use.

It also includes a built-in calculator.

You can quickly calculate numbers without leaving the keyboard, making it useful for shopping, work, and daily tasks.

Use it for just 5 minutes a day for one week, and you will not be able to go back to the old QWERTY keyboard.

Switch modes anytime depending on how you hold your phone.

Whether you are right-handed or left-handed, this keyboard adapts to you.

Designed for speed, comfort, and real-world use on smartphones.


## Version history (last 5 releases)

### 2.3 — 2026-06-20

Optimized number key placement for thumb-zone typing.

### 2.1 — 2026-01-26

Improved autocomplete

### 1.9 — 2026-01-20

Improved calculator performance

### 1.6 — 2026-01-15

Added swipe input for faster typing

### 1.5 — 2026-01-14

SHIFT key behavior improved for better uppercase and lowercase switching.

## More apps by JAESIK YOUN

- [Pachira - Points&Coupons](https://appshunter.io/ios/app/pachira-points-and-coupons/id6751176799)

All apps by JAESIK YOUN: https://appshunter.io/developer/1833834844

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-29.*