フラッシュ暗算(公式) vs How Math Works
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
フラッシュ暗算(公式)
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多くの方からご要望を頂き、ついにiPhone版 フラッシュ暗算の登場です。 このアプリは、フラッシュ暗算考案者制作の日本フラッシュ暗算協会の公式ソフトです。 日本フラッシュ暗算協会は、日本国内で行われている全ての検定試験・競技大会・ギネスの公式ソフトを提供しています。 検定試験におきましては合格者が100万人を突破しました。 是非多くの方に、本物のフラッシュ暗算を体験していただきたいと思います。 機能 問題は、1桁2口3秒から3桁15口1.2秒までをレベル別に120段階で選択できるようにしました。 問題終了後、答えを入力すると正誤を音声で知らせます。 注意 最高レベル付近の問題では、機器の性能を超えたスピードになりますので、状況により表示にムラが出る場合があります。 今後、検定試験用・大会用・ゲーム用など、ご要望があれば制作をしたいと考えております。宜しくお願い致します。
How Math Works
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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
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Verdict
The clearest difference is price: How Math Works at Free against フラッシュ暗算(公式)'s $3.99. How Math Works also leads on update cadence (every 6 days vs every 15 months). フラッシュ暗算(公式)'s advantage is in-app purchases (none vs 1) and iOS requirement (7.0 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
How Math Works is free to download; フラッシュ暗算(公式) 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(公式) asks for nothing beyond the download.
フラッシュ暗算(公式) ships an update every 15 months, How Math Works every 6 days. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.
| Parameter | フラッシュ暗算(公式) | How Math Works |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 2.0 (1 ratings) — better | — |
| Positive reviews | 57.1% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 15 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 7.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 2 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Yuji Miyamoto | Tsuyoshi Chujo |
In-app purchases
フラッシュ暗算(公式)
No in-app purchases
How Math Works
- Premium Plan (Monthly)1 Month trial$3.991 Month
Questions
Is フラッシュ暗算(公式) free?
Is How Math Works free?
Do フラッシュ暗算(公式) or How Math Works have ads?
Which is updated more often, フラッシュ暗算(公式) or How Math Works?
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