Comparison

フラッシュ暗算検定模試(協会) vs How Math Works

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

Head to head
About

フラッシュ暗算検定模試(協会)

Features
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日本フラッシュ暗算協会公認の検定模試アプリです。 是非多くの方に、本物のフラッシュ暗算検定を受験していただきたいと思います。 まずは検定模試アプリで腕試し! 日本フラッシュ暗算協会の検定試験に完全準拠していますので本アプリで合格するまで十分練習すれば実際の検定試験での合格率も大幅にアップ! 実際の検定試験に沿った効率的な練習を行えます。

About

How Math Works

Features
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Math questions, sucn as slicing a cube at an angle, calculating when two brothers walking around a pond will meet, submerging a cube into a tank of water... are full of situations that are hard to recreate in real life. Because these situations are so difficult to picture concretely, many children end up feeling that math just isn't for them. "How Math Works" recreates these hard-to-picture situations on a tablet or smartphone, so children can actually see and touch them — helping them build a concrete, intuitive image of what's really going on. - Key Features Explore pages that recreate situations like slicing a cube at an angle or two brothers walking around a pond, where you can move the objects around and observe what happens. More than 30 experiences included! Draw scribbles directly on top of any page. (Scribbles are not saved — please use your device's screenshot feature if you'd like to keep them.) This app performs no network communication whatsoever. All features work completely offline. Nothing you do in the app affects anything outside of it, so children can explore and experiment to their heart's content. Using "Notebook" page, you can add figures introduced at experiences pages, draw your own notes, then print it so that you can keep what you see and find in your physical notebook or folder. - Please Note The content of this app has not been supervised by education professionals. We cannot guarantee any educational outcomes, so we ask parents to use it with their children under appropriate supervision. Privacy Policy: https://wholesale-piccolo-b79.notion.site/Privacy-Policy-b70867731a554631ba006586a89cda12 Terms of Use: https://wholesale-piccolo-b79.notion.site/Terms-of-Service-4e9212249a9046dbbe79746e3b9ee96e

Screenshots

フラッシュ暗算検定模試(協会)4 screens
How Math Works4 screens

Verdict

The call

The clearest difference is price: How Math Works at Free against フラッシュ暗算検定模試(協会)'s $3.99. How Math Works also leads on update cadence (every 6 days vs every 28 months). フラッシュ暗算検定模試(協会)'s advantage is in-app purchases (none vs 1) and iOS requirement (8.0 vs 15.0). On ads 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

How Math Works is free to download; フラッシュ暗算検定模試(協会) costs $3.99 up front. How Math Works sells 1 in-app purchase, starting at $3.99 per month. フラッシュ暗算検定模試(協会) asks for nothing beyond the download.

UpkeepUpdate frequency

フラッシュ暗算検定模試(協会) ships an update every 28 months, How Math Works every 6 days. The most recent releases landed on October 18, 2026 and October 9, 2026 respectively.

Scorecard4 real differences · 5 level
フラッシュ暗算検定模試(協会) versus How Math Works: the parameters behind the verdict, then further details
Parameterフラッシュ暗算検定模試(協会)How Math Works
Price$3.99Free — better
Rating3.0 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 28 monthsEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS8.0 — better15.0
Further details — not scored
Size15 MB29 MB
Age rating+44+
DeveloperYuji MiyamotoTsuyoshi Chujo

In-app purchases

None

フラッシュ暗算検定模試(協会)

No in-app purchases

1 purchases

How Math Works

Subscriptions1
  • Premium Plan (Monthly)1 Month trial$3.991 Month

Questions

Is フラッシュ暗算検定模試(協会) free?
フラッシュ暗算検定模試(協会) costs $3.99, with no in-app purchases.
Is How Math Works free?
How Math Works is free to download, with in-app purchases available.
Do フラッシュ暗算検定模試(協会) or How Math Works have ads?
Neither フラッシュ暗算検定模試(協会) nor How Math Works shows ads.
Which is updated more often, フラッシュ暗算検定模試(協会) or How Math Works?
フラッシュ暗算検定模試(協会) ships an update every 28 months, and How Math Works every 6 days. Most recently, フラッシュ暗算検定模試(協会) was updated on October 18, 2026 and How Math Works on October 9, 2026.

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