StudyCast（スタキャス）-勉強・記録・タイマー Android
StudyCast（スタキャス）-勉強・記録・タイマー is #2 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
DeveloperBenesse Corporation
CategoryEducation
PriceFree
Released–
Installs500k+
Rating–
Updated
Content ratingEveryone
Best rank now
#2
Education FreeMeasured
StudyCast（スタキャス）-勉強・記録・タイマー at a glance
AI summary written from our chart and store data, 2026-09-27. It can be wrong: check the numbers above.
A free online study room app by Benesse Corporation that helps Japanese middle and high school students build consistent study habits through peer accountability, AI-powered subject tutoring, and automated progress tracking. The app currently ranks #2 in the Japan Education Free chart, indicating strong market traction among students seeking collaborative digital study environments.
Similar apps: Forest, Focusmate, Quizlet
StudyCast（スタキャス）-勉強・記録・タイマー on Google Play
App details
App ID
jp.co.benesse.studycast
Publisher
Benesse Corporation
Content rating
Everyone
StudyCast（スタキャス）-勉強・記録・タイマー 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.
Where StudyCast（スタキャス）-勉強・記録・タイマー's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
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.
Where it ranks on Google Play
Every top 200 chart it appears in across 15 countries.
| Country | Charts | Rank |
|---|---|---|
| Japan | EducationFree | #2 |
Apps near StudyCast（スタキャス）-勉強・記録・タイマー on the chart
Education Free, around #2.
What users say about StudyCast（スタキャス）-勉強・記録・タイマー
From recent reviews.
About StudyCast（スタキャス）-勉強・記録・タイマー
Over 2 million downloads!
StudyCast is a free online study room app that allows you to concentrate on studying together with peers nationwide who are in similar grades and target schools. With a 24/7 AI question function and automatic learning record reports categorized by subject and textbook, it supports middle and high school students in developing consistent study habits.
● Winner of the "Grand Prize" at the 4th Google Cloud Generative AI Innovation Awards!
● AI question function now supports 7 subjects!
*English, Math, Japanese, Science, Geography/History, Civics, and Information Technology
● Average daily study time increased by 93 minutes! (*1)
● 96.5% of users reported increased motivation! (*2)
*LINE login or Apple sign-in is required to use this service.
"I can't concentrate at home because I'm easily distracted, even though it's before a test."
"I want to graph my exam and test study progress to prepare effectively."
"I want to solve problems I don't understand immediately and efficiently prepare and review."
StaCast solves these study problems!
[Main Features]
◆Concentrate on studying with friends and peers nationwide◆
・Selectable Study Rooms: Simply enter your favorite room to start a study space where you can learn and grow together with peers nationwide.
・By Target School/Goal: Maintain motivation for exam and test preparation in rooms exclusively for junior high and high school students aiming for the same school.
・1-on-1 Match Rooms: Compete with rivals in real time to see who can study the most.
・My Room: Use the stopwatch-style study timer function to concentrate on studying alone.
・Safe and Secure: Encourage each other while protecting your privacy with anonymous "public accounts" and stamp chat. * Usage Scenarios: School homework, studying for regular tests, preparation and review, cram school assignments, high school and university entrance exam preparation, mock exams and past paper practice, qualification exams such as Eiken and Kanken, memorization, etc.
* 24/7 AI Question Function for Anything You Don't Understand ◆
* Instantly Solve Your Questions: Even if you get stuck while studying, the AI will provide thorough support until you "understand."
* Cultivate Thinking Skills: Instead of simply providing answers, hints and step-by-step explanations deepen understanding.
* Automatically Records Study Time, Boosting Learning Motivation ◆
* Automatic Graphing: Study time is automatically tallied by subject and material. See "learning imbalances" at a glance with pie charts and bar graphs.
* Learning Management: Compare with the previous week and check the ratio by subject to support efficient learning plans.
* Ranking: Nationwide user study time and reference book rankings are also published.
* Library: Try reading popular reference books.
* Increasing Integration with Popular Learning Apps! Manage your study time all in one place ◆
Study time from the following apps can also be automatically linked and aggregat
StudyCast is a free online study room app that allows you to concentrate on studying together with peers nationwide who are in similar grades and target schools. With a 24/7 AI question function and automatic learning record reports categorized by subject and textbook, it supports middle and high school students in developing consistent study habits.
● Winner of the "Grand Prize" at the 4th Google Cloud Generative AI Innovation Awards!
● AI question function now supports 7 subjects!
*English, Math, Japanese, Science, Geography/History, Civics, and Information Technology
● Average daily study time increased by 93 minutes! (*1)
● 96.5% of users reported increased motivation! (*2)
*LINE login or Apple sign-in is required to use this service.
"I can't concentrate at home because I'm easily distracted, even though it's before a test."
"I want to graph my exam and test study progress to prepare effectively."
"I want to solve problems I don't understand immediately and efficiently prepare and review."
StaCast solves these study problems!
[Main Features]
◆Concentrate on studying with friends and peers nationwide◆
・Selectable Study Rooms: Simply enter your favorite room to start a study space where you can learn and grow together with peers nationwide.
・By Target School/Goal: Maintain motivation for exam and test preparation in rooms exclusively for junior high and high school students aiming for the same school.
・1-on-1 Match Rooms: Compete with rivals in real time to see who can study the most.
・My Room: Use the stopwatch-style study timer function to concentrate on studying alone.
・Safe and Secure: Encourage each other while protecting your privacy with anonymous "public accounts" and stamp chat. * Usage Scenarios: School homework, studying for regular tests, preparation and review, cram school assignments, high school and university entrance exam preparation, mock exams and past paper practice, qualification exams such as Eiken and Kanken, memorization, etc.
* 24/7 AI Question Function for Anything You Don't Understand ◆
* Instantly Solve Your Questions: Even if you get stuck while studying, the AI will provide thorough support until you "understand."
* Cultivate Thinking Skills: Instead of simply providing answers, hints and step-by-step explanations deepen understanding.
* Automatically Records Study Time, Boosting Learning Motivation ◆
* Automatic Graphing: Study time is automatically tallied by subject and material. See "learning imbalances" at a glance with pie charts and bar graphs.
* Learning Management: Compare with the previous week and check the ratio by subject to support efficient learning plans.
* Ranking: Nationwide user study time and reference book rankings are also published.
* Library: Try reading popular reference books.
* Increasing Integration with Popular Learning Apps! Manage your study time all in one place ◆
Study time from the following apps can also be automatically linked and aggregat
What's new in 4.1.11
一部機能が改善されました。
ご意見・ご要望は、アプリを起動し画面右上の「設定＞評価・ご要望」よりお送りください。
ご意見・ご要望は、アプリを起動し画面右上の「設定＞評価・ご要望」よりお送りください。