Comparison

数学トレーニング vs Focus & Fish

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

Head to head
About

数学トレーニング

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中学生の数学・計算の勉強にピッタリの無料学習アプリ。 方程式や関数、図形や確率、データの活用など、中学校で学ぶ様々な分野の計算問題に挑戦しよう。 また、小数や分数などの復習問題も収録しています。 問題は、中学校の学年に対応した以下のレベルに分けて収録しています。 ・中学1年レベル ・中学2年レベル ・中学3年レベル ・(復習)小学4年レベル ・(復習)小学5年レベル ・(復習)小学6年レベル 問題画面に指で途中計算を書くことができます。 広いスペースに書きたい場合は、緑色の「メモ帳とペン」ボタンを押してください。 本アプリ「数学トレーニング(中学1年・2年・3年の数学計算勉強アプリ)」は全ての問題を無料でご利用頂けます。 本アプリはアプリ内に広告が表示されます。 広告表示が気になる方は、有料となり誠に恐縮ですが、もし宜しければ「本気で勉強プラン(広告非表示)」をご利用ください。 利用規約 https://apps.studyswitch.co.jp/terms_of_use.html 本アプリは、累計5000万ダウンロード、人気の「はんぷく」学習シリーズのアプリです。 「はんぷく」は学校ネット株式会社( Gakko Net Inc. )の登録商標です。 不具合などがございましたら、アプリ内の「お問い合わせ」からご連絡ください。

About

Focus & Fish

This app helps you reclaim your time by blocking distracting social media apps. As you focus, you'll grow a virtual fish in a digital aquarium, encouraging a healthier digital life.

Highlights
  • Block distracting social apps
  • Set custom focus timers
  • Grow virtual fish in an aquarium
  • Regain control of your time
  • Promotes healthier digital habits
Features
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Reclaim Your Time, Grow Your Virtual Fish! Introducing 'If You Quit Your Phone, Fish Will Grow' - A Unique Digital Detox App 1.Select the Social Apps You Want to Avoid: Choose the apps that distract you the most. 2.Set the Timer: Decide how long you want to stay focused and start the timer. 3.Block Distractions: The selected apps are blocked to help you stay on track. 4.Watch Your Fish Thrive: As you focus, your virtual fish collects items and grows in a vibrant digital aquarium. 5.Enjoy Your Freedom: Freed from the pull of social media, regain control over your time and focus on what truly matters. Download now on iOS and start your journey towards a healthier digital life! We utilize Zundamon for the app's tutorial explanations. Voice: VOICEVOX, Illustration: Ahiru Sakamoto By downloading the app, you agree to the following terms and conditions: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

数学トレーニング4 screens
Focus & Fish4 screens

Verdict

The call

The clearest difference is update cadence: Focus & Fish at every 5 days against 数学トレーニング's every 4 months. Focus & Fish also leads on rating (5.0 vs 4.8). 数学トレーニング's advantage is review sentiment (76% vs 62%) and ratings volume (52 vs 10). 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. 数学トレーニング sells 1 in-app purchase, starting at $1.99 per month and Focus & Fish sells 7 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Focus & Fish holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: 数学トレーニング has 52 ratings behind it against 10, so its average is the more settled of the two. Written reviews complicate that: 76% of 数学トレーニング's written reviews are positive against 62% of Focus & Fish's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

数学トレーニング ships an update every 4 months, Focus & Fish every 5 days. The most recent releases landed on September 23, 2026 and September 24, 2026 respectively.

Scorecard5 real differences · 5 level
数学トレーニング versus Focus & Fish: the parameters behind the verdict, then further details
Parameter数学トレーニングFocus & Fish
PriceFreeFree
Rating4.8 (52 ratings)5.0 (10 ratings) — better
Positive reviews76.2% of reviews — better61.5% of reviews
Number of ratings52 — better10
Update frequencyEvery 4 monthsEvery 5 days — better
AdsYesYes
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better18.0
Further details — not scored
Size64 MB274 MB
Age rating9+4+
DeveloperStudySwitch, Inc.Takeshi Segawa

Customer experience

数学トレーニング

All ratings52 ratings
Positive94.2%
Neutral5.8%
Negative0.0%
Written reviews21 reviews
Positive76.2%
Neutral4.8%
Negative19.0%

Focus & Fish

All ratings10 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews26 reviews
Positive61.5%
Neutral7.7%
Negative30.8%

In-app purchases

1 purchases

数学トレーニング

Subscriptions1
  • 本気で勉強プラン$1.991 Month
7 purchases

Focus & Fish

Subscriptions1
  • Remove Ads (Monthly)$0.991 Month
One-time6
  • 3 Days Ad-Free:No Subscription$0.29
  • 1000G$2.99
  • 3000G$5.99
Show 3 more
  • 10000G$11.99
  • 300,000G$29.99
  • 1,000,000G$69.99

Questions

Is 数学トレーニング free?
数学トレーニング is free to download, with in-app purchases available.
Is Focus & Fish free?
Focus & Fish is free to download, with in-app purchases available.
Which has better reviews, 数学トレーニング or Focus & Fish?
Focus & Fish is rated higher. 数学トレーニング averages 4.8 out of 5 from 52 ratings, while Focus & Fish averages 5.0 from 10 ratings.
Do 数学トレーニング or Focus & Fish have ads?
Both 数学トレーニング and Focus & Fish show ads.
Which is updated more often, 数学トレーニング or Focus & Fish?
数学トレーニング ships an update every 4 months, and Focus & Fish every 5 days. Most recently, 数学トレーニング was updated on September 23, 2026 and Focus & Fish on September 24, 2026.

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