Your iPhone has three widget surfaces — the lock screen (iOS 16+), the home screen, and StandBy (iOS 17+) — and Kanjijo’s free kanji widgets cover all three, rotating kanji and vocabulary from your current JLPT level with readings and meanings, synced to your SRS reviews. There’s even an interactive test widget that quizzes you right on the home screen. Setup takes about two minutes; the full steps are below.
Every Japanese learner has the same dead zone: the 50+ times a day you unlock your phone for nothing in particular. A kanji widget reclaims that dead zone. No app to open, no decision to make — the kanji is just there, on the lock screen, doing its quiet work. We’ve measured what 30 days of this actually does; this guide covers the practical half: which widget goes where, and how to set each one up.
What makes a kanji widget actually useful
After a lot of testing, four things separate widgets that teach from widgets that decorate:
- Level-appropriate content. Random “kanji of the day” shows you 鬱 when you’re studying N5. Kanjijo’s widgets draw from your current JLPT level and lessons instead.
- Rotation on every glance. One kanji per day is ~1 exposure; rotating a small set from your active deck means dozens.
- Reading + meaning visible. A bare character you can’t read teaches nothing — you need the furigana and gloss in the same glance.
- A real study system behind it. Widgets are passive reinforcement; they work because they’re connected to active SRS reviews and exclusive mnemonics inside the app — the recognition-vs-recall loop needs both halves.
Surface 1: The lock screen (the one to set up first)
Since iOS 16, widgets can sit directly on the lock screen — the single highest-traffic surface on your phone. This is where passive learning earns its keep, because the lock screen is unavoidable by design: you see it before every single phone use.
| Step | What to do |
|---|---|
| 1 | Long-press your lock screen, then tap Customize |
| 2 | Select the lock screen and tap the widget strip under the clock |
| 3 | Choose Kanjijo from the widget list |
| 4 | Tap Done — kanji from your current level now appear on every check |
Surface 2: The home screen — including the test widget
Home screen widgets come in larger sizes, so they fit more context: kanji plus vocabulary, readings and meanings at a glance. Setup: long-press the home screen → tap the + in the corner → search “Kanjijo” → pick a size → Add Widget.
This is also where Kanjijo’s interactive test widget lives — and it’s the upgrade most learners don’t know exists. Instead of passively showing a character, it quizzes you right on the home screen: a mini recall question you answer on the spot. Passive glances build familiarity; retrieval builds memory — the test widget turns phone checks into the second one.
Surface 3: StandBy mode (iOS 17+)
Charge your iPhone on its side and StandBy turns it into a smart display — including your widgets. Prop it on your desk while you work and you’ve got a rotating kanji display in your peripheral vision all day. Swipe to the widget pane in StandBy and long-press to add Kanjijo there too.
What to expect from a widget (the honest part)
A widget will not carry you to JLPT N1 by itself. What it demonstrably does — in our 30-day experiment — is boost recognition of the specific kanji it rotates, at literally zero added study time. That makes it the perfect layer around active study: SRS reviews in the morning, widget glances and test-widget quizzes all day, new kanji, vocabulary or grammar lessons at night. The full architecture of that routine is in our guide to turning your phone into a Japanese immersion environment, and the psychology of why glances beat good intentions is in why widgets are a secret weapon.
Lock screen, home screen, StandBy and the interactive test widget — synced to your JLPT level and SRS reviews, with exclusive mnemonics behind every kanji. No credit card.
Frequently Asked Questions
Yes — since iOS 16 apps can place widgets on the lock screen. Kanjijo’s free widgets rotate your current JLPT-level kanji and vocabulary there, so every phone check becomes a micro-repetition.
As a supplement, measurably yes — passive exposure boosts recognition of the rotated kanji at zero added study time. They work best wrapped around active SRS study, not instead of it.
Kanjijo’s interactive test widget quizzes you from the home screen — a mini recall question you answer on the spot. Retrieval practice beats passive glancing, and the test widget brings it to the highest-traffic screen you own.
A small set — a handful from your current lessons — beats a firehose. The goal is repeated glances at the same characters until they’re familiar, then the set advances with your level.