A new Japanese input system
Japanese input's one and only rule
1 Mora = 2 taps

Why is Japanese still typed
by memorizing sounds?

• For decades, typing Japanese has meant recalling each character's sound and then converting it via romaji or flick input.
• All2Tap is different. Instead of converting Japanese into pronunciation, it composes input directly from the visible syllable structure.
• Every 1 Mora = 2 taps, no exceptions

Traditional input types sounds.
All2Tap types structure.
1 Mora = 2 taps
one and only rule for all Japanese input

Not a chart for memorizing Japanese.
A chart for building it.

• Where the traditional 50-sound chart was a table for memorizing characters,
• All2Tap's combo chart visualizes the principle of combining consonant and vowel keys.
• It's designed so every Japanese syllable can be entered in just 2 taps, with no exceptions.
• Every 1 Mora = 2 taps

🖱️ In the combo chart below, click a syllable to see how the 2-tap combination works.

The old 50-sound chart is a memorization table; All2Tap's combo chart is a combination table.
From memorizing sounds to understanding structure.
Every 1 Mora = 2 taps, one and only rule

Old input converts. All2Tap composes

• The old way requires recalling sounds and substituting characters,
• All2Tap intuitively composes Japanese's syllable structure as it is

Old input memorizes results.
All2Tap understands the rule.
From memorization to combination, every 1 Mora = always 2 taps

Officially recognized originality,
proven by patents

• Unlike traditional methods that rely on phonetic conversion,
• All2Tap introduces a new input system that generates Japanese syllables solely through the structural combination of consonants and vowels.
• This proprietary input structure is patented in South Korea and the United States, and is currently under examination in Japan.

GLOBAL PATENT PORTFOLIO

• A global patent portfolio that protects structural innovation All2Tap's "Two-Zone, Two-Touch Character Completion System" is evolving beyond mobile software into an input platform that can extend to PCs, game input devices, and dedicated hardware.
• The core of the technology lies not in any specific product, but in the character-generating structure itself.

What did the patents recognize?

✔ Input structure that doesn't memorize sounds

Beyond voice-based memorization — generating characters through structural combination alone

✔ The principle of combining consonants and vowels

A system that generates Japanese syllables by joining a consonant zone and a vowel zone

✔ A structure that generates every mora by the same principle

A design handling seion, dakuon, handakuon, yōon, and sokuon with a single input principle

✔ A syllable-generation structure using a mute key

Core technology unique to All2Tap that sets it apart from typical consonant-centric input systems

✔ Input designed around combination, not memorization

An approach that generates characters by understanding the principle, rather than memorizing results

"Where traditional input is a structure that memorizes and converts the result of each syllable, All2Tap generates syllables through the combination of consonants and vowels as a single principle. What we set out to protect by patent is not the characters, but the new method of creating characters." — Inventors & patent holders      Lee Jong-heon  Ko In-ok  Lee Si-young

Try typing it yourself

Press a consonant key then a vowel key in order and a Japanese syllable is completed.

Beyond an input method,
into a learning tool

All2Tap is not just an input method — its rule-based learning makes it work for anyone encountering Japanese for the first time.

Why did we build this system?

Lee Jong-heon · Ko In-ok · Lee Si-young

All2Tap inventors / patent holders

Traditional 50-sound method. That's where it began.
Why must Japanese be memorized, results and all?
We found the answer in the mora-based syllable structure.
A single combination principle of consonant + vowel.
If it can generate every syllable, you can learn Japanese by understanding, not memorization.

Spotting the limits of the old way

We saw that 50-sound, memorization-driven learning places an unnecessary cognitive load on learners — especially the separate memorization of yōon and dakuon.

Researching a mora-based approach

We analyzed Japanese phonology and established, in theory, that consonant + vowel combinations can cover the entire Japanese syllabary.

Introducing the mute-key concept

For syllables that begin without a consonant, like the 「あ」 and 「や」 rows, we devised the 'mute key (○)', unifying every syllable under the same 2-tap rule.

Patents registered in Korea & the US

The new structure is original — officially recognized by patent offices. The Japanese patent is under examination.