# Duo Keyboard: Resize & Split — One-handed, 30 languages > One-handed, 30 languages (iPhone/iPad app by Connectzero. inc.) - Source: https://appshunter.io/ios/app/duo-keyboard-resize-and-split/id6826541573 (this page in markdown: same URL + `.md`) - Developer: [Connectzero. inc](https://appshunter.io/developer/1653068552) - Category: Utilities - Price: $2.99 - Age rating: 4+ - Requires: iOS 17.0 · 145 MB - Languages: American English, Korean - Released: 2026-10-28 - Data updated: 2026-11-08 ## What is Duo Keyboard? On a closed iPhone Duo, lower the keyboard to keep more of the message in view while you write your reply. Look for Sunday’s plans in the first screenshot. With the same Safari note open, switching from the English system keyboard to Duo Keyboard at 120 pt reduced the keyboard and input toolbar from 47.7% to 32.1% of the screen height. Two more lines of the note came into view. This example was measured on a closed iPhone Duo simulator in portrait on iOS 27.1. WHEN YOU CHANGE HANDS Swipe the language switch key left for a left-handed keyboard or right for a right-handed keyboard. You can also swipe the empty space beside the keys to bring them over to the other side. WHEN YOU OPEN YOUR DUO On a wide screen, swipe down on the switch key to split the keys between your thumbs. Swipe up to bring them back together at full width. Duo Keyboard remembers your size and position separately for narrow and wide screens. YOUR SIZE AND LANGUAGES Hold the switch key to open settings above the keyboard. Adjust height and width while watching the keys change. In Typing, choose two inputs from 30 languages and emoji, then tap the switch key to swap between them. Try Korean and English, English and Spanish, or French and emoji. One purchase includes all layouts. 30 INPUT LANGUAGES Korean, English, Spanish, French, German, Russian, Portuguese, Italian, Indonesian, Vietnamese, Turkish, Polish, Ukrainian, Dutch, Swedish, Malay, Filipino/Tagalog, Arabic, Hindi, Thai, Bengali, Urdu, Persian, Chinese, Japanese, Marathi, Javanese, Nigerian Pidgin, Telugu and Tamil. Chinese supports Pinyin with Simplified and Traditional conversion; Japanese supports romaji with kana and kanji conversion; Vietnamese supports Telex. Arabic, Hindi, Thai, Bengali, Urdu, Persian, Marathi, Telugu and Tamil use paged character entry. Javanese uses Latin script. General autocorrection and next-word prediction are not provided. FAMILIAR LAYOUTS, USEFUL CONTROLS • English QWERTY and 12-key • Korean QWERTY, Danmoum, Cheonjiin, Naratgeul, Cheonjiin Plus and Vega • Three-column number and symbol pads for compact layouts • Optional number row and settings key, switch-key placement and English auto-capitalization • Adjustable glass opacity; Liquid Glass on iOS 26 and later, with a compatible appearance on earlier supported versions • Swipe on Space to move the text cursor • Return follows the input field's action; hold it for a newline NO FULL ACCESS REQUIRED Keyboard input is not logged or automatically transmitted. All typing, including Chinese and Japanese conversion, runs on your device. Full Access is not required. Optional bug reports are emails you review and send yourself; the report and reply address are received for support. GET STARTED 1. Open Settings > General > Keyboard > Keyboards. 2. Tap Add New Keyboard and choose Duo Keyboard. 3. In a text field, hold the globe key and select Duo Keyboard. 4. Hold the actual keyboard's switch key to set size, placement and inputs. BEFORE YOU BUY • iOS controls the available width and bottom system area. Margins may remain on some devices or in some apps. Split mode requires a wide enough input area. • Empty areas around or between the keys remain part of the keyboard. They do not reveal the document underneath. There is no free-floating keyboard or system mouse pointer. • iOS may use its own keyboard in password or certain phone fields, and in apps that disallow third-party keyboards. Some fields do not accept newlines. • In-app practice settings are separate from the actual keyboard's saved settings. • On a wide screen, after moving the keys and reopening the keyboard, the previous position may briefly appear before the saved position is displayed. ## Is Duo Keyboard safe? Not enough ratings yet to assess Duo Keyboard. ## Is Duo Keyboard legit? Duo Keyboard: Resize & Split appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Duo Keyboard is 63 out of 100 points across 7 verification signals from App Store and developer data. ## Version history (last 4 releases) ### 1.1.1 — 2026-11-07 The new App Store screenshots compare the system keyboard and Duo Keyboard on the same text on a closed iPhone Duo. They also show how to switch hands and how to move between split and full width on the open display. ### 1.1.0 — 2026-11-01 Duo Keyboard now supports 30 input languages, with language and layout settings together in one place. • New options include German, Russian, Arabic, Hindi and more. • Use Chinese Pinyin with Simplified and Traditional conversion, Japanese romaji with kana and kanji conversion, and Vietnamese Telex. • Choose any two distinct inputs from 32 language and emoji options as Primary and Secondary. • Select a language and layout together in the Typing tab. The duplicate input chooser has been removed from Size & Layout. • Set each input’s layout independently, including six Korean layouts and English QWERTY or 12-key. Changing one input keeps the other input’s layout intact. • The new language input runs on device and does not require Full Access. ### 1.0.1 — 2026-10-30 Change keyboard placement directly from the language key. • Swipe left or right for one-handed typing on that side. • Swipe up to return to Center at the full available width. This also joins a split keyboard. • Center remembers your saved one-handed width, so a sideways swipe restores it. • Moving the keys keeps your input language and Korean composition intact. Tap to switch languages and hold to open settings, as before. These gestures also work with the settings key hidden. ### 1.0.0 — 2026-10-29 No release notes. ## More apps by Connectzero. inc - [낚맛: 낚시의맛](https://appshunter.io/ios/app/id1665121067) All apps by Connectzero. inc: https://appshunter.io/developer/1653068552 ## Related topics [1 handed keyboard](https://appshunter.io/ios/topics/1-handed-keyboard) · [tanam keyboard](https://appshunter.io/ios/topics/tanam-keyboard) --- *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 2026-11-08.*