Yokoso: Learn Japanese
For real life in Japan
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Yokoso teaches the Japanese you are about to need: the sign on the door, the number the register says, the sentence that gets the package delivered.
Vocabulary and kanji for every JLPT level are included — N5 through N1, over 8,900 items in all. Everything is free, works offline, and needs no account.
WHAT MAKES IT DIFFERENT
No placement test. The app gives you a few short probes and skips whatever you already know, in both directions, before it will call something known.
Real material. Actual signs you will stand in front of (営業中, 準備中, 非常口), prices the way a register actually says them, the counter phrases that come back at you, and reading passages built from the words you have.
Spaced repetition tuned to a measured target. Yokoso watches how you do the first time an item asks for something harder, and adjusts so you land near 85 percent correct — challenged, not drowned.
Focused sessions. Pick Signs & stations, Restaurants & bars, Shopping & the register, Prices, or Errands & paperwork, and review exactly that, from the same queue and the same schedule.
Listening practice using your device's own Japanese voices, with a voice picker that tells you honestly which of them are good.
Pattern Found. The app names the grammar you have been using without knowing its name, then tests it on sentences you have never seen.
Honest progress. Coverage and exam-readiness are shown as two different numbers, because they are two different things. Milestones map to ILR and CEFR scales, not to a streak.
The Atlas: every kana, kanji, word, sign, sentence, and pattern in the app on one screen, lighting up as it moves toward mastery.
ALREADY STUDYING SOMEWHERE ELSE
Already using WaniKani? Yokoso imports your progress so you keep the work you have already done. Your API token stays on this device unless you turn on sync; with sync on it travels inside your sync data so your other devices can import too. Either way it goes nowhere but WaniKani and your own sync row.
YOUR DATA
Everything lives on your device by default. No account is required. No ads, no data sales, no third-party trackers.
Sync across devices is optional and off until you turn it on. When you do, your progress is stored under a sync code you generate — or, on the web, under a Google sign-in if you would rather tap once. Synced learning activity also helps us understand how Yokoso is used, in aggregate, so we can improve it. You can export everything as a file, or erase all of it, at any time.
NO DARK PATTERNS
No streaks to break. No notifications guilting you back. No countdown timers, no fake urgency, no leaderboards. You can set any item aside and it stays aside.
SUPPORTING YOKOSO
Everything that teaches you Japanese is free and always will be: every level, every review, no ads, no caps. Supporting is optional and funds development. Supporters get Glass, an optional theme — the only thing it changes is how the app looks.
Yokoso Supporter is an optional auto-renewing monthly subscription. Payment is charged to your Apple ID at confirmation of purchase. The subscription renews monthly unless auto-renew is turned off at least 24 hours before the end of the current period; manage or cancel it in your App Store account settings.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://yokosoapp.com/privacy.html
Built by one person living in northern Japan.
Every JLPT level is in. Vocabulary and kanji for N5 through N1 — over 8,900 items, all offline, all free.
Focused sessions: pick Signs & stations, Restaurants & bars, Shopping & the register, Prices, or Errands & paperwork and review exactly that, from the same queue.
Listening practice got a voice picker that tells you honestly which of your device's Japanese voices are worth using.
You can now set an item aside from inside a review, and bring every one of them back later from Settings.
The review queue explains itself: what it served you and why that item rather than another.
Settings leads with the accountless sync option, and the sync, import, and supporter rows now fit properly on small phones.
Supporters get Glass, an optional look, as a thank-you. Every learning feature stays free.
If you support Yokoso, thank you. You are the reason it stays free for everyone who cannot pay.
The developer, James Ketola, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Contact Info
- User Content
- Identifiers
- Usage Data
- Diagnostics
- Other Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- James Ketola
- Size
- 4.4 MB
- Category
- Education
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Supporter $2.99
- Supporter++ $9.99
- Supporter+ $4.99
- Copyright
- © 2026 James Ketola
