マハラジャ算数 vs Mental Math for Work
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
マハラジャ算数
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◎計算が速くなる、新しい習慣。 インド式計算で、暗算力と脳力を同時に鍛えよう。 「マハラジャ算数」は、小学生から大人まで楽しめる計算トレーニング&学習アプリです。 ◎こんな人におすすめ ・計算を速くしたい ・暗算力を伸ばしたい ・子どもの学習習慣をつけたい ・スキマ時間で脳トレしたい ・最近、頭の回転が気になる ◎ 主な機能 ■ 学ぶモード インド式計算のルールをステップ形式でわかりやすく解説 ■ 鍛えるモード ・60秒タイムアタック ・ミスするまで続くチャレンジ(サバイバル) ◎ ゲーム感覚で計算力アップ 特徴 ・シンプルで直感的な操作 ・達成感のあるトレーニング設計 ・継続したくなる仕組み(記録・称号) ◎ラジャ先生と学ぶ インドの先生「ラジャ先生」と一緒に、楽しく学びながらステップアップ。 今日から、計算を“得意”にしよう。
Mental Math for Work
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Mental Math for Work helps you practice quick estimates for meetings, sales calls, planning reviews, product discussions, and case interviews. Train with business-context drills for gross margin, discounts, KPI, CVR, CPA, SaaS metrics, workload estimates, sales tax estimates, and engineering rough calculations. Features - Choose a daily goal of 3, 5, 7, or 10 questions - Choose practice days and optional reminders at a time that works for you - See your completed practice days this week - Role-based courses for sales, PM/PdM, planning, engineering management, retail/e-commerce, case interviews, and basics - Category practice for the work math you need most - Estimate OK judgment for practical ranges, not only exact answers - Weak-point review, time attack, and meeting mode - Accuracy, speed, estimate OK rate, and category trends Start with the free daily quest. Premium unlocks category practice, weak-point review, speed training, meeting mode, and detailed progress insights. Build the number reflexes you need at work, one short session at a time. Terms of Use: https://shigoto-no-anzan.pages.dev/legal/terms/ Privacy Policy: https://shigoto-no-anzan.pages.dev/legal/privacy/ Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: マハラジャ算数 at none against Mental Math for Work's 2. マハラジャ算数 also leads on update cadence (every 3 days vs every 9 days). Mental Math for Work's advantage is ads (none vs shown). On price, device support and iOS requirement 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. Mental Math for Work sells 2 in-app purchases, starting at $1.99 per month. マハラジャ算数 asks for nothing beyond the download.
マハラジャ算数 ships an update every 3 days, Mental Math for Work every 9 days. The most recent releases landed on October 3, 2026 and October 14, 2026 respectively.
| Parameter | マハラジャ算数 | Mental Math for Work |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days — better | Every 9 days |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 27 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Yutaro Takei | Shota Morioka |
In-app purchases
マハラジャ算数
No in-app purchases
Mental Math for Work
- Premium Monthly$1.991 Month
- Premium Lifetime$9.99









