Comparison

RisshoLib vs Four Operations Math

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

Head to head
About

RisshoLib

Features
Read full description

「RisshoLib」は、立正大学の図書館リソースを最大限に活用するための一体型アプリケーションです。手のひらの上で図書館の全情報が手に入り、利便性とアクセシビリティを高めます。 このアプリを使用すると、いつでもどこでも立正大学図書館の利用可能な開放時間を確認することが可能になります。予定を立てて勉強時間を最大限に活用することができます。 また、「RisshoLib」は本の探し物を容易にします。各本の具体的な場所を示し、図書館内を迷うことなく探し物を見つけることが可能になります。 さらに、強力な検索機能により、立正大学図書館の膨大な蔵書から目当ての本を簡単に検索することができます。一冊の本を探す時間を大幅に短縮し、学習や研究に集中することができます。 「RisshoLib」は立正大学図書館の全てを管理し、最適化された学習環境を提供します。学生生活の必需品として、「RisshoLib」をぜひご利用ください。

About

Four Operations Math

This puzzle game challenges players to create mathematical equations using four numbers and basic arithmetic operations to reach a target value. It promotes logical thinking and problem-solving skills through engaging gameplay with varying challenges.

Highlights
  • Create mathematical equations
  • Use four numbers and operations
  • Achieve target values
  • Logical thinking development
  • Basic and Custom game modes
  • Intuitive tap and drag controls
Features
Read full description

This is a challenging puzzle game in which the player creates a mathematical equation that achieves a target value using four given numbers and four arithmetic operations. Players must use their logical thinking and creativity to reach a different target value each time. ■ Rules * Use all numbers: All four numbers provided must be used one at a time. * Four arithmetic operations and parentheses: Add, subtract, multiply, divide, and use parentheses as many times as you like. * Target value achievement: Try to make the formula match the target value, which changes each time. ■ Operation * Tap a panel: Tap the bottom panel to add it to the end of the formula. * Drag a panel: Drag a panel to add it anywhere in the formula. * Drag & Drop: Added panels can be dragged and dropped to any desired location. * Delete panel: Added panels can be deleted by double tapping on them. ■ Game Modes * Basic Mode: The target value and the four numbers to be used are determined at random. * Custom Mode: You decide the target value and the four numbers to be used. ■ Features * Intuitive operation: Simple and easy-to-use controls allow anyone to enjoy the game immediately. * Different challenges each time: The target value changes each time, so there is always a fresh challenge awaiting you. * Promotes logical thinking: Solving puzzles develops your logical thinking and problem-solving skills. Test your computational and logical thinking skills and hone your skills while having fun. Let's give it a try!

Screenshots

RisshoLib1 screens
Four Operations Math4 screens

Verdict

The call

The clearest difference is iOS requirement: RisshoLib at 11.0 against Four Operations Math's 17.0. On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

RisshoLib ships an update weekly, Four Operations Math every 8 days. The most recent releases landed on October 10, 2026 and October 6, 2026 respectively.

Scorecard1 real difference · 9 level
RisshoLib versus Four Operations Math: the parameters behind the verdict, then further details
ParameterRisshoLibFour Operations Math
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyWeekly — betterEvery 8 days
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPod — betteriPhone
Requires iOS11.0 — better17.0
Further details — not scored
Size40 MB21 MB
Age rating17+4+
DeveloperRyutaro IsekiRomiick LLC

In-app purchases

None

RisshoLib

No in-app purchases

None

Four Operations Math

No in-app purchases

Questions

Is RisshoLib free?
RisshoLib is free to download, with no in-app purchases.
Is Four Operations Math free?
Four Operations Math is free to download, with no in-app purchases.
Do RisshoLib or Four Operations Math have ads?
Neither RisshoLib nor Four Operations Math shows ads.
Which is updated more often, RisshoLib or Four Operations Math?
RisshoLib ships an update weekly, and Four Operations Math every 8 days. Most recently, RisshoLib was updated on October 10, 2026 and Four Operations Math on October 6, 2026.

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