ロック画面漢字（漢字・四字熟語・ことわざの学習アラーム） Android
ロック画面漢字（漢字・四字熟語・ことわざの学習アラーム） is #24 in Education Free on Google Play in Japan and charting in 1 of 15 countries we track.
Updated 27 Sep 2026 · rankings refresh through the day
DeveloperMiracleStudy
CategoryEducation
PriceFree
Released
Installs100k+
Rating–
Updated–
Content ratingEveryone
Best rank now
#24
Education FreeMeasured
ロック画面漢字（漢字・四字熟語・ことわざの学習アラーム） on Google Play
App details
App ID
com.joymemory.kanji
Publisher
MiracleStudy
Content rating
Everyone
ロック画面漢字（漢字・四字熟語・ことわざの学習アラーム） downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Google Play shows an exact lifetime install count; downloads per day are its daily change (measured). When Play hasn't refreshed the count, they come from new ratings and Top Free chart positions. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Business model: Ad-led
How ロック画面漢字（漢字・四字熟語・ことわざの学習アラーム） makes money: subscriptions, one-off purchases and ads.
Ads
Ads
/mo
of revenue
Where it ranks on Google Play
Every top 200 chart it appears in across 15 countries.
| Country | Charts | Rank |
|---|---|---|
| Japan | EducationFree | #24 |
Apps near ロック画面漢字（漢字・四字熟語・ことわざの学習アラーム） on the chart
Education Free, around #24.
About ロック画面漢字（漢字・四字熟語・ことわざの学習アラーム）
✨A secret trick to easily master kanji on your smartphone's lock screen! ✨
🤦🏻♂️: If you have a solid grasp of kanji, there's nothing embarrassing about it!
But I wonder if I can find the time to study...
(It's actually a pain. Is there anyone who takes the time to study kanji when they're busy and tired from work?)
🙋🏻♀️: No problem!
With kanji on your lock screen, you can study automatically, even if you don't have time!
🙆🏻♀️: It's said that people look at their smartphones more than 100 times a day. Even if you just look at one kanji on your lock screen each time, you can learn 100 kanji in one day!
🙆🏻♂️: You don't have to open the app directly, just use your smartphone as you normally do!
💁🏻♀️: New kanji and their meanings are automatically displayed on your lock screen every time, so you can naturally learn new kanji just by looking at your phone.
You don't feel pressured to master them all at once, and as you build up each kanji you see, you'll become a kanji master before you know it!
Not only that, you can also see four-character idioms and proverbs on the lock screen, which will naturally improve your vocabulary!
🙋🏻♂️: I can't believe this amazing new technology is free to use! With Kanji Lock Screen, you can improve your education, vocabulary, reading comprehension, and confidence!
🙇🏻♂️: I need to go download it on Google Play right now!
💫Key Features
● Lock Screen Auto-Learning
● Auto-Review
● Study with Fun Quizzes
● Stroke Order Animations for Writing Kanji
● Word Categories: Favorites, Unsure, Learned
● Offline Dictionary Search
● Font Size Adjustment
💫Key Content
Provided with related images and detailed descriptions of sources and origins!
📘[Four-Character Idioms]
● Essential Four-Character Idioms
● Four-Character Idioms for Your Motto
● Famous Four-Character Idioms
● Commonly Used Kanji (Part 1 and Part 2)
● Kanji by Kanji Kentei Level
● Elementary School Kanji
📗[General Knowledge]
● Essential Proverbs
[Special Features of Lock Screen Kanji]
Kanji characters are automatically displayed on the lock screen like an alarm.
Just like an alarm sounds in your daily life, Lock Screen Kanji automatically reminds you to study.
Leave Lock Screen Kanji to easily learn kanji and rapidly acquire knowledge. 💙
🤦🏻♂️: If you have a solid grasp of kanji, there's nothing embarrassing about it!
But I wonder if I can find the time to study...
(It's actually a pain. Is there anyone who takes the time to study kanji when they're busy and tired from work?)
🙋🏻♀️: No problem!
With kanji on your lock screen, you can study automatically, even if you don't have time!
🙆🏻♀️: It's said that people look at their smartphones more than 100 times a day. Even if you just look at one kanji on your lock screen each time, you can learn 100 kanji in one day!
🙆🏻♂️: You don't have to open the app directly, just use your smartphone as you normally do!
💁🏻♀️: New kanji and their meanings are automatically displayed on your lock screen every time, so you can naturally learn new kanji just by looking at your phone.
You don't feel pressured to master them all at once, and as you build up each kanji you see, you'll become a kanji master before you know it!
Not only that, you can also see four-character idioms and proverbs on the lock screen, which will naturally improve your vocabulary!
🙋🏻♂️: I can't believe this amazing new technology is free to use! With Kanji Lock Screen, you can improve your education, vocabulary, reading comprehension, and confidence!
🙇🏻♂️: I need to go download it on Google Play right now!
💫Key Features
● Lock Screen Auto-Learning
● Auto-Review
● Study with Fun Quizzes
● Stroke Order Animations for Writing Kanji
● Word Categories: Favorites, Unsure, Learned
● Offline Dictionary Search
● Font Size Adjustment
💫Key Content
Provided with related images and detailed descriptions of sources and origins!
📘[Four-Character Idioms]
● Essential Four-Character Idioms
● Four-Character Idioms for Your Motto
● Famous Four-Character Idioms
● Commonly Used Kanji (Part 1 and Part 2)
● Kanji by Kanji Kentei Level
● Elementary School Kanji
📗[General Knowledge]
● Essential Proverbs
[Special Features of Lock Screen Kanji]
Kanji characters are automatically displayed on the lock screen like an alarm.
Just like an alarm sounds in your daily life, Lock Screen Kanji automatically reminds you to study.
Leave Lock Screen Kanji to easily learn kanji and rapidly acquire knowledge. 💙