Comparison

こともん 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

こともん

Features
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ことばには、きもちがあります。 「ばか」「きもい」「ありがとう」 たった一言で、人の気持ちは大きく変わります。 こともんは、 言葉と気持ちの関係を 親子で一緒に考えられる ことば辞書アプリです。 言葉の世界には、 きもちを持ったモンスターがいます。 モンスターを見ながら、 「この言葉でどう感じる?」 そんな会話のきっかけをつくります。

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

こともん4 screens
How Math Works4 screens

Verdict

The call

The clearest difference is update cadence: How Math Works at every 6 days against こともん's every 3 weeks. On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. こともん sells 1 one-off in-app purchase and How Math Works sells 1 in-app purchase, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

こともん ships an update every 3 weeks, How Math Works every 6 days. The most recent releases landed on September 9, 2026 and September 23, 2026 respectively.

Scorecard1 real difference · 5 level
こともん versus How Math Works: the parameters behind the verdict, then further details
ParameterこともんHow Math Works
PriceFreeFree
Update frequencyEvery 3 weeksEvery 6 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size42 MB29 MB
Age rating4+4+
DeveloperREINA KIMURATsuyoshi Chujo

In-app purchases

1 purchases

こともん

One-time1
  • こともん Plus$5.99
1 purchases

How Math Works

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

Questions

Is こともん free?
こともん is free to download, with in-app purchases available.
Is How Math Works free?
How Math Works is free to download, with in-app purchases available.
Do こともん or How Math Works have ads?
Neither こともん nor How Math Works shows ads.
Which is updated more often, こともん or How Math Works?
こともん ships an update every 3 weeks, and How Math Works every 6 days. Most recently, こともん was updated on September 9, 2026 and How Math Works on September 23, 2026.

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