ホライゾン 日本語入力：オフラインのフリック入力キーボード

"Horizon Japanese Input" is a secure on-screen keyboard app that does not require network access permissions.

It is free to use and completely ad-free.

Not only does it function perfectly in offline environments such as airplane mode, but it is also guaranteed at the OS level by the Android system that it will never (and cannot) communicate with external servers under any circumstances.

For reference: There is also an explanation page with images.

https://support.raiiware.com/horizon/introduction/?

Advantages of not requiring network access permissions

Security and privacy:
Since no communication with external servers occurs, information leakage of any kind is impossible.

Economical benefits:

It consumes absolutely no data packets.

Energy-saving and battery-friendly:

No power consumption for communication occurs. It's strictly zero.

"No unnecessary features" - lightness and responsiveness

This keyboard app is designed to work without performance issues even on smartphone models from several generations ago.

Input, convert, and confirm characters. To ensure a smooth and stress-free experience without burdening your smartphone, various optimizations and weight reductions have been implemented throughout the app.

Available On-Screen Keyboards

The following on-screen keyboards are available:

(1) Japanese Keyboard (Flick Input)

(2) English Keyboard (Flick Input/Full Keyboard)

(3) Number-Only Keyboard

There is also an auxiliary panel for entering emojis and symbols.

Comfortable Kanji Conversion

With its "extensive vocabulary data" and "kanji conversion engine that predicts the original input even with input errors," it provides comfortable kanji conversion. It won't interrupt your thought process.

Omitted Modifier Keys

In this keyboard app, for example, instead of typing "gakkou," you can type "katsukou," and "gakkou" will appear as a conversion candidate.
In other words, you can omit inputting the voiced consonant mark for "ga" or the lowercase version of "tsu."
Omitting these significantly reduces the effort required for input.

Undo Confirmation

You can also undo a confirmed kanji conversion and revert to the hiragana before conversion.

Only immediately after confirming a kana-kanji conversion, you can return to the "pre-confirmation state" by tapping the "Undo" key in the upper left corner of the on-screen keyboard.

Changing Sentence Boundaries with Taps

You can change the sentence boundary during kana-kanji conversion by tapping.

You can intuitively change the sentence boundary.

Automatic Suggestion of Next Input Based on Previous Input

For example, if you type "Akemashite" and confirm it, "Omedetou" and "Omedetou gozaimasu" will be automatically suggested as next input candidates.

For standard phrases, you can input the latter half without typing a single character.

What This App Cannot Do

If you download or install this app, please note the following:

* Hardware keyboards are not supported.

Disclaimer

This app is provided "as is" without warranty of any kind, express or implied. Raiiware shall not be held liable for any damages arising from the use of this application.