百Math vs 100ます計算
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
百Math
This app helps users improve their mental arithmetic skills through a 100-problem calculation trainer. It offers various modes, progress tracking, and a global leaderboard to encourage practice and competition. A clean design and home screen widget provide convenient access.
- 100-problem calculation trainer
- Addition, Subtraction, Multiplication, Division modes
- Progress tracking (streak, average time, charts)
- Global ranking system
- Distraction-free design
- Home screen widget
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When did you last do mental math without reaching for your phone? 百Math was built by an engineer who realized he'd become too dependent on calculators and AI to do even simple arithmetic. This app is his answer — and maybe yours too. Trusted by users for 5 years, 百Math is a no-frills 100-problem calculation trainer. Solve all 100 as fast as you can, track your progress, and compete on the global leaderboard. 【Key Features】 ・4 Modes: Addition, Subtraction, Multiplication, and Division ・Schulte Table — a visual search game that sharpens your peripheral vision and focus ・Flash Calculation — a new mode that trains your instant recall ・Ghost Race — compete against your personal best ・Heatmap to spot your weak spots ・Clean, distraction-free design ・Global ranking system ・Streak counter, average time, and time chart to track improvement ・Home screen widget for quick access
100ます計算
Practice math drills with a treasure-hunting game. Features include past problem review, multiplication tables selection, speed tracking graphs, and a time attack mode. Progress is recorded on a calendar.
- Past problem review system
- Multiplication table selection
- Speed improvement graphs
- Calendar for learning dates
- Time attack mode
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便利な機能 ・同じ問題を何回も学習する過去問システム ・かけ算の段を選んで学習する機能 ・グラフで解く速度の向上をみることができます ・カレンダーで学習した日にちを記録 ・タイムアタック機能。時間を決めて計算に取り組めるので、休み時間などに挑戦できます。 (本アプリのゲーム部分は必須ではありません。 ツルハシを強化しなくても 全ての機能・問題を解くことができます。)
Screenshots
Verdict
The clearest difference is review sentiment: 100ます計算 at 100% against 百Math's 50%. 100ます計算 also leads on iOS requirement (12.0 vs 18.0). 百Math's advantage is update cadence (weekly vs every 4 months). On price, ads, in-app purchases and monetization model 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.
百Math ships an update weekly, 100ます計算 every 4 months. The most recent releases landed on August 11, 2026 and September 17, 2026 respectively.
| Parameter | 百Math | 100ます計算 |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | — | 1 — better |
| Update frequency | Weekly — better | Every 4 months |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | Ad-supported |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 18 MB | 203 MB |
| Age rating | 4+ | 4+ |
| Developer | naoya saito | Sumie Watanabe |
Customer experience
百Math
100ます計算
In-app purchases
百Math
No in-app purchases
100ます計算
No in-app purchases
