KeyroIME
Ultra-fast conversion
Remarkably low memory footprint. The local dictionary answers in milliseconds, so conversion never keeps you waiting.
NEXT-GENERATION JAPANESE AI INPUT
Next-generation AI Japanese IMEFaster. Smarter.
KeyroIME reads the context and predicts your next words. Millisecond local-dictionary response plus AI long-sentence completion — Japanese input that never breaks your flow.
✓Core features are free ✓Open-source input engine ✓Keystrokes never leave your device
KeyroIME · Candidate conversion
ありが
LIVE INPUT
1 / 3
SMART CANDIDATES Suggests the phrasing that fits your flow, instantly.
The open-source input core lives on GitHub. Read the implementation before you install it.
—STARS
—FORKS
—LATEST RELEASE
—COMMUNITY RATING
* Live figures will come from the GitHub API at launch; these are the sample values from the spec.
DESIGNED FOR FLOW
Smooth all the way
past the keystroke.
Less time spent typing character by character, more time spent on what you mean. KeyroIME quietly supports your daily Japanese input.
Context-aware AI completion
Smart long-sentence prediction. Switch between business-email and internal-document tone in one click.
Privacy protection
An open-source input core. Keystroke data is never uploaded and is anonymized locally.
KEYROIME AI PRO
Resolve the hesitation
inside the input itself.
Make what you started writing more natural and easier to read. AI Pro widens your options while keeping your own voice.
Explore AI Pro✦ Ask the AIAI POINTS −1
Rewrite this as a polite, natural business email
Refined textThank you for your continued support. I am sharing the materials here and would appreciate your review.
CHOOSE YOUR EDITION
Three editions,
compared side by side.
Start free with Open Source. Choose Pro for specialist dictionaries and sync, or AI Pro to write with AI.
| Feature | ESSENTIAL Open Source Free · via GitHub | Recommended FOR FOCUS Pro Coming soon | FOR CREATORS AI Pro Coming soon · AI points |
|---|---|---|---|
| Core Japanese input & prediction | ✓ | ✓ | ✓ |
| Millisecond local-dictionary conversion | ✓ | ✓ | ✓ |
| Open source (public on GitHub) | ✓ | — | — |
| Extended specialist dictionaries | — | ✓ | ✓ |
| Multi-device dictionary sync | — | ✓ | ✓ |
| AI long-form rewriting | — | — | ✓ |
| Prompt & shortcut input | — | — | ✓ |
| AI points | — | — | 200 pts on sign-up |
| Supported OS | Windows / macOS | Windows / macOS | Windows / macOS |
Open Source
Free · via GitHub
- ✓Core Japanese input & prediction
- ✓Millisecond local-dictionary conversion
- ✓Open source (public on GitHub)
Pro
Coming soon
- ✓Extended specialist dictionaries
- ✓Multi-device dictionary sync
- ✓Millisecond local-dictionary conversion
AI Pro
Coming soon · AI points
- ✓AI long-form rewriting
- ✓Prompt & shortcut input
- ✓200 pts on sign-up
* Pricing and availability are still being prepared. All editions are planned for Windows and macOS.
KeyroIME AI Academy
Guides, AI techniques and video walkthroughs for getting more out of Japanese input.