Frequently Asked Questions
Learn about Japanese script structure, number logic, and application metrics.
What is Hiragana and Katakana?+
Japanese has three writing systems. Hiragana (e.g., あ, い, う) is the primary phonetic script used for grammatical particles, verb endings, and native Japanese words. Katakana (e.g., ア, イ, ウ) is a sharper phonetic script used specifically for foreign loanwords, technical terms, and sound effects (onomatopoeia).
Why should I sign in with a Google account?+
While guest mode is fully supported for local practice, signing in with Google unlocks the complete Sakana experience:
- Persistent Progress Tracking: Save your accuracy percentages, max streaks, and daily practice history to the cloud.
- Leaderboard Access: Submit your completion times to the global Speed Leaderboard (requires 100% accuracy).
- Badges & Achievements: Earn progression badges and display them on your public profile dashboard.
- Custom Avatars & Themes: Personalize your profile with custom avatar presets and save your custom UI color themes.
Is Sakana Drill free to use?+
Yes, Sakana Drill is 100% free. I am committed to keeping this platform entirely free of charge, with no paid tiers, locked features, hidden fees, or intrusive advertisements.
Why does the app focus on Kana instead of Kanji?+
Kana is the phonetic foundation of the entire language. Mastering Hiragana and Katakana is the first essential step to pronouncing, reading, and writing Japanese. While Kanji represents meanings, it is always read phonetically using Kana. Sakana targets rapid phonetic recall to build your initial fluency.
Why is Kanji included in some drill modes?+
In Words Mode, Numbers Mode, and Cities Mode, we display Kanji alongside the Kana readings. This helps you associate the phonetic spellings you write with their real-world written symbols (e.g., linking the reading juu with the symbol 十 for 10). It bridges phonetic mastery with visual vocabulary.
Why are Japanese numbers grouped by four digits?+
In English, numbers are grouped by thousands (1,000 = thousand, 1,000,000 = million). In Japanese, large numbers are grouped by 10,000 (万 / man). For example, 100,000 is written and read as 10 ten-thousands (十万 / juu man). Translating these in your head requires practice, which is why we built the dedicated Numbers Mode.
What is Cities Mode?+
Cities Mode is a geography-focused spelling mode. You are shown a Japanese city's Kanji, Kana reading, and a cultural or historical clue, and you must spell the name of the city in Romaji (e.g., typing niigata for 新潟 / にいがた). The direct city names are hidden from the clues to challenge your memory. It drills all 80 designated, core, and specialty cities in Japan.
How do Practice Session Drills work?+
You customize a session size and deck in the parameters sidebar. During a run, type the matching Romaji reading or numerals translation and hit Enter or Space to submit. If you make a mistake, that card is logged so you can review and practice it in the recap.
How is the Speed Leaderboard calculated?+
The Speed Leaderboard measures your completion speed in milliseconds. To qualify, you must complete a session with 100% accuracy (0 mistakes) for finite sizes (10, 20, 30, 50, or 100 cards). This encourages both speed and absolute correctness.
What is the 'Type in Kana' option and how does it work?+
It acts as a built-in Japanese input method (IME) that converts your typed Romaji characters into Hiragana or Katakana on the fly (e.g., typing ha turns into は, and ssen becomes っせん). You don't need a Japanese keyboard layout installed on your device to practice spelling drills directly in Japanese script. We also auto-resolve trailing n characters so that inputs like hassen match and advance instantly once the single n is typed.
How do I install Sakana to my home screen as a standalone app?+
Sakana is optimized as a Progressive Web App (PWA) to provide a clean, full-screen, native-app-like experience:
- On iOS (Safari): Tap the Share button (box with an arrow pointing up), scroll down the share sheet, and select Add to Home Screen.
- On Android (Chrome): Tap the menu button (three vertical dots) at the top-right corner, and select Install App or Add to Home Screen.
- On Desktop (Chrome/Edge): Click the install icon that appears inside the browser's address bar to launch Sakana in a clean standalone window.