# Kioku: Japanese Word Widget — Japanese on your Lock Screen

> Japanese on your Lock Screen (iPhone/iPad app by Jesus Ernesto Jaramillo Salazar.)

- Source: https://appshunter.io/ios/app/kioku-japanese-word-widget/id6761097420 (this page in markdown: same URL + `.md`)
- Developer: [Jesus Ernesto Jaramillo Salazar](https://appshunter.io/developer/1868326639)
- Category: Education, Reference
- Price: Free with in-app purchases
- Age rating: 9+
- Requires: iOS 17.0 · 35 MB
- Languages: American English
- Released: 2026-04-21
- Data updated: 2026-08-20
- User reviews in markdown: https://appshunter.io/ios/app/kioku-japanese-word-widget/id6761097420/reviews.md

## What is Kioku?

Learn Japanese without opening an app.

Kioku turns your lock screen into a passive learning surface. A new word appears every morning, with kanji, reading, and meaning, so you can build your vocabulary just by glancing at your phone. No flashcards. No streaks. No study sessions.

START WHERE YOU ARE
New to Japanese? Kioku starts with hiragana and katakana, the foundation. Already past the basics? Jump straight into JLPT N5 vocabulary. Everything beginner is free.

HOW IT WORKS
1. Install Kioku
2. Choose your level (hiragana, katakana, or JLPT N5)
3. Add the widget to your lock screen
4. Glance throughout your day
5. Words stick through repetition, not memorization

A QUIET DESIGN
No mascots. No streak guilt. No notifications begging you to come back. Just a calm, editorial layout inspired by Japanese paper and typography. Noto Serif JP for the characters, soft warm crimson, generous space.

FREE FOREVER
• Hiragana (46 characters)
• Katakana (46 characters)
• JLPT N5 vocabulary (~670 words)
• 1 word per day
• Full lock screen and home screen widgets

UNLOCK MORE WITH PRO
Try Pro free for 7 days. Then $1.99/month, $9.99/year, or $19.99 one-time.

• All JLPT levels: N5, N4, N3, N2, N1 (~13,000 words)
• Up to 4 words per day
• Future features included

Cancel anytime.

WHY KIOKU
Most language apps assume you have time and willpower to open them daily. You don't, and that's okay. Kioku meets you where you already are, the screen you check 50+ times a day. Learning becomes ambient. It happens in the background of your life.

Fully offline. No account, no data collection that identifies you, no ads. Just words on your lock screen.

ATTRIBUTION
Dictionary data: JMdict/EDICT
© Electronic Dictionary Research and Development Group (EDRDG)
License: Creative Commons Attribution-ShareAlike 4.0
https://www.edrdg.org/jmdict/j_jmdict.html

PRIVACY
Kioku does not collect, transmit, or store any personal data that identifies you. All vocabulary is bundled with the app. No account required.

Privacy Policy: https://hibana-com.github.io/kioku-site/privacy
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Kioku Pro Monthly | $1.99 | per month |
| Kioku Pro Yearly | $9.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Kioku Pro Lifetime | $19.99 | one-time |



## Version history (last 5 releases)

### 1.2.1 — 2026-08-14

- Expanded device support and small reliability improvements.

### 1.2.0 — 2026-06-24

Passive learning, now with a way to make it stick.

Test Mode (Pro): quiz yourself on the exact words your Lock Screen has already shown you. No decks to build, Kioku knows what you've seen.

Themed practice (Pro): focus on food, travel, work, and more. 10 topics across every JLPT level.

Plus smoother transitions throughout, and a fix for a few words that were showing the wrong reading.

### 1.1.1 — 2026-06-03

A welcoming start for new learners.

• Hiragana and katakana are now free, alongside JLPT N5
• Try Pro free for 7 days to unlock all JLPT levels (N4 to N1) and up to 4 words per day
• Added Portuguese (Brazilian) language support
• Fixed a sync issue between the lockscreen widget and the app
• Refined word selection so changing your daily rotation no longer shifts the current word

### 1.1.0 — 2026-06-02

A welcoming start for new learners.

• Hiragana and katakana are now free, alongside JLPT N5
• Try Pro free for 7 days to unlock all JLPT levels (N4 to N1) and up to 4 words per day
• Added Portuguese (Brazilian) language support
• Fixed a sync issue between the lockscreen widget and the app
• Refined word selection so changing your daily rotation no longer shifts the current word

### 1.0.0 — 2026-04-21

No release notes.

## Apps similar to Kioku

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [CasualVocab Widget - Japanese](https://appshunter.io/ios/app/casualvocab-widget-japanese/id1622203836) | 4.0 (4) | Free | Education |
| [LangWid: Learn Japanese Easily](https://appshunter.io/ios/app/langwid-learn-japanese-easily/id1557218460) | 4.7 (104) | Free | Education |
| [Tomokanji: Kanji Widgets](https://appshunter.io/ios/app/tomokanji-kanji-widgets/id6686408263) | — | Free | Education |
| [Ichigo - One Word](https://appshunter.io/ios/app/ichigo-one-word/id6757926503) | — | Free | Education |
| [Daily Japanese Widget](https://appshunter.io/ios/app/daily-japanese-widget/id6747817592) | 5.0 (2) | Free | Education |
| [IchiJi: Kanji Widgets](https://appshunter.io/ios/app/ichiji-kanji-widgets/id6773030069) | 5.0 (2) | Free | Education |

## More apps by Jesus Ernesto Jaramillo Salazar

- [Honne - RAW DNG Camera](https://appshunter.io/ios/app/honne-raw-dng-camera/id6760527801)

All apps by Jesus Ernesto Jaramillo Salazar: https://appshunter.io/developer/1868326639

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-20.*