Comparison

StudyRank vs 情報の王様

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

StudyRank

This app gamifies study time by converting your focused effort into virtual currency. Track your progress, share your achievements on social media, and review your past study sessions.

Highlights
  • Study timer with virtual currency conversion
  • SNS sharing of study time
  • Progress tracking and history
  • Gamified learning experience
Features
Read full description

◆タイマー機能 勉強した時間をお金に換算することができます。 ◆SNSシェア機能 勉強に費やした時間をSNSに投稿することができます。 ◆記録機能 過去の記録を見ることができます。 お問い合わせ (追加して欲しい機能などあれば) https://twitter.com/benkyoinvest

About

情報の王様

Master high school information studies with this quiz-style app. It offers over 1000 questions in Q&A and multiple-choice formats, perfect for quick study sessions, exam preparation, and reinforcing key concepts. Enjoy a game-like experience with rewards for clearing stages.

Highlights
  • Over 1000 Q&A and multiple-choice questions
  • Short play sessions for flexible study
  • Covers high school and university exam material
  • Game-like progression with stage clearing
  • Gift rewards for completing quests
  • Efficient memorization of key points
Features
Read full description

Welcome to King of Information! King of Information is a part of our “King” education series that focuses on quick learning in a fun quiz-like manner! Are you interested in learning information studies? With this application, you can study it in a fun and quiz-like manner! Even if you don't like this subject, this application may change your perception! This application is also useful for regular exams and college entrance exams since it adheres to high school studying guidelines. ◉ Overview ・Over 1000 questions of information studies in a 1 question to 1 answer format or multiple-choice format. ・Each play session is short, so you can study even if you only have a small amount of time! ・Comprehensive content that is useful for preparing for both high school and university exams. ・You can enjoy the application in a game-like manner by clearing questions and stages.   ◉ Features ・Efficiently memorize important points in geoscience for important exams! ・Since it is in an easy Q/A format, you can study easily without using a book! ・If you want to get high scores, just repeat and memorize the answers! ・As you solve more problems, you will be able see how your exams may operate and function! ・Gift rewards are available if you clear our quest mode! ◉ Subscription ・¥ 360 / month, ¥ 1,800 / 6 months, ¥ 2,900 / year ・If you choose to purchase our “SPECIAL TRAINING PLAN", payment will be charged from your iTunes account. ・In addition, your account will be charged for renewal within 24-hours prior to the end of the current period. ・Auto-renewal may be turned off at anytime by going to your settings in the iTunes Store after purchase. ・Subscription price starts at ¥240 JPY/month. ・Prices are in JAPANESE yen, which may vary in countries other than JAPAN and are subject to change without notice. ・No cancellation of the current subscription is allowed during the active subscription period. ・You may use this application for free even if you do not purchase a plan. ◉ Others ・Terms of Service: https://sites.google.com/view/hanauta/tou ・Privacy Policy: https://sites.google.com/view/hanauta/policy ・Apple Terms of Service (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

StudyRank4 screens
情報の王様4 screens

Verdict

The call

The clearest difference is in-app purchases: StudyRank at none against 情報の王様's 3. StudyRank also leads on ads (none vs shown). 情報の王様's advantage is review sentiment (86% vs 62%) and iOS requirement (15.0 vs 17.0). On price, update cadence and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. 情報の王様 sells 3 in-app purchases, starting at $1.99 per month. StudyRank asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 3 level
StudyRank versus 情報の王様: the parameters behind the verdict, then further details
ParameterStudyRank情報の王様
PriceFreeFree
Positive reviews61.5% of reviews85.7% of reviews — better
Update frequencyEvery 6 weeksEvery 6 weeks
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.015.0 — better
Further details — not scored
Size26 MB138 MB
Age rating4+4+
DeveloperYusuke UemuraHANAUTA INC.

Customer experience

StudyRank

Written reviews13 reviews
Positive61.5%
Neutral0.0%
Negative38.5%

情報の王様

Written reviews7 reviews
Positive85.7%
Neutral0.0%
Negative14.3%

In-app purchases

None

StudyRank

No in-app purchases

3 purchases

情報の王様

Subscriptions3
  • 特訓プラン$1.991 Month
  • 特訓プラン$11.996 Months
  • 特訓プラン$19.991 Year

Questions

Is StudyRank free?
StudyRank is free to download, with no in-app purchases.
Is 情報の王様 free?
情報の王様 is free to download, with in-app purchases available.
Do StudyRank or 情報の王様 have ads?
情報の王様 shows ads; StudyRank does not.
Which is updated more often, StudyRank or 情報の王様?
StudyRank ships an update every 6 weeks, and 情報の王様 every 6 weeks. Most recently, StudyRank was updated on October 13, 2026 and 情報の王様 on October 24, 2026.

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