漢字OS
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Adapts to your SRS progress
Write English
Write Japanese
Fine-tune your learning experience for optimal results
How questions are presented
Prefer Japanese descriptions when available (experimental)
Text-to-speech timing
How you provide answers
Optimized configurations for different learning styles
Bank, Top-ups, and API call history
sentences array. We’ll validate, normalize, and dedupe automatically. Replace items from a JSON file
Select a JSON item file exported from KanjiOS. Your current data will be backed up first.
Simple, stable scheduler with expert defaults
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Review schedule & learning status
Memory strength & retention insights
Choose your preferred Japanese voice for TTS
Explore sentence variations and practice production
💡 Tip: Click different options to hear how the sentence changes. All variations are grammatically correct!
Browse stored items, inspect their JSON, and prep AI-assisted fixes.
Upload an Anki export, inspect entries, and import them into your dashboard.
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Your data is automatically backed up. Restore from a previous backup or create a new one.
Your local data will remain on this device. You can sign back in anytime.
This will remove all locally stored data including cached items, preferences, and session data. Your cloud-synced data will remain safe. The app will reload.
Your current items will be backed up before import. Importing from file replaces items only. Use Backups for full restores.