MathHelper vs Flag Quest
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MathHelper
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高度な算数計算機 分数の自由な計算: 帯分数(整数 と 分数)や仮分数の入力をサポート。計算結果は、ワンタップで「小数」「帯分数」「仮分数」へ切り替えが可能です。 余りのある割り算: 通常の割り算に加え、商と余りを出す「余り」機能を搭載。 スマートな括弧入力: ( [ { を自動で判別して入力。入れ子構造の複雑な四則演算もスムーズです。 徹底した数値処理 選べる丸め処理: 四捨五入、切り上げ、切り捨て、丸めなしを自由に選択。 桁数指定: 整数から小数第4位まで、必要な精度に合わせて表示を固定できます。丸められた桁には色がつくため、一目でわかります。 強力な因数分解・解析ツール 最大3つの数値を同時解析: 数値を入力するだけで、それぞれの素因数分解、約数の個数を表示。 総合解析: 複数数値の最大公約数(GCD)、最小公倍数(LCM)、最も簡単な整数比(Simplest Ratio)、共通の公約数一覧を瞬時に算出します。 便利な履歴と管理機能 自動保存クリップボード: 過去の計算式と結果が自動保存されます。履歴から数値をタップするだけで、今の計算に再利用可能です。 バイリンガル対応: 計算設定やヘルプ画面は日本語と英語の併記、または切り替えに対応しています。 こんな方にオススメ お子様の算数の宿題を効率よくチェックしたい保護者の方 分数の計算や因数分解の答えを手軽に確認したい学生の方 算数の「困った」を「スッキリ」に。 『MathHelper:算数電卓『答え合わせ』をインストールして、正確でスピーディーな計算体験を手に入れてください。
Flag Quest
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Learn all 195 flags of the world the fun way! Flag Quest is a friendly quiz app that helps you truly remember every flag. Miss a flag and it comes back just when you'd forget it. Curious about a country? Ask the built-in AI anytime. FEATURES - All 195 countries Every UN member and observer state, organized by difficulty and continent. Start anywhere you like. - Smart auto-review Missed flags return after 1, 3 and 7 days — right when you need the reminder. You can change the schedule anytime. - Similar-flag training Monaco vs. Indonesia, the Nordic crosses, pan-Arab stripes… special sets teach you to tell tricky flags apart. - Rewards that keep you going Daily streaks, continent awards and 24 badges to earn, with confetti to celebrate every finished set. - A full flag atlas Browse all 195 flags with capitals, population, fun facts, flag origins and a short history for every country. - Ask the AI "Why isn't Nepal's flag a rectangle?" — ask anything about countries, flags and geography, right in the app. WORKS OFFLINE All flags are built in, so you can quiz anywhere. (Only the AI chat and maps need a connection.) Your progress is stored only on your device. No account needed.
Screenshots
Verdict
The clearest difference is ads: MathHelper at none against Flag Quest's shown. Flag Quest's advantage is iOS requirement (15.0 vs 26.2). On price, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | MathHelper | Flag Quest |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 2 weeks |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 26.2 | 15.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Takahiko Ikenuma | MELGLOBE, LIMITED LIABILITY COMPANY |
In-app purchases
MathHelper
No in-app purchases
Flag Quest
No in-app purchases









