Comparison

Derivon vs ひたすら積分

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

Head to head
About

Derivon

Master calculus concepts like derivatives and integrals through daily, intuitive practice. Earn rewards, collect planets, and build streaks as you progress through challenges. Designed for quick, effective learning sessions.

Highlights
  • Daily calculus problem practice
  • Earn Star Sand rewards
  • Collect planets in Gallery
  • Build and maintain daily streaks
  • Rank-Up Challenges
  • Shooting mode for breaks
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Master calculus through daily practice. Solve derivatives and integrals by intuition — no overthinking, just repetition. • Swipe through problems and build your skills • Earn Star Sand with every correct answer • Spin the Gacha to collect planets in your Gallery • Build a daily streak — never break the chain • Take Rank-Up Challenges as you progress • Play Shooting mode for a quick break • Track your streak, level up, and earn rewards Whether you're preparing for AP Calculus, university exams, or just sharpening your math skills, Derivon makes practice feel like a space adventure. 3 minutes a day. That's all it takes. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

ひたすら積分

Features
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Practice Integration is a focused learning app designed specifically for mastering integrals. If you struggle with integration or want to build speed and confidence through repetition, this app provides a simple, distraction-free experience focused entirely on practice. The app includes both a 10-Question Time Attack Mode and an Endless Mode, allowing you to practice quickly during short breaks or spend more time improving your skills. With Easy and Hard difficulty levels, it is suitable for learners who are just starting with integration as well as those who want to improve their calculation speed and accuracy. Features • Practice integration exclusively • 10-Question Time Attack Mode • Endless Practice Mode • Easy / Hard difficulty settings • Simple and intuitive interface • Designed for quick practice sessions Move from understanding integration to solving problems with confidence. Perfect for anyone who wants to master integrals through consistent repetition and practice.

Screenshots

Derivon4 screens
ひたすら積分3 screens

Verdict

The call

The clearest difference is in-app purchases: ひたすら積分 at none against Derivon's 5. ひたすら積分 also leads on device support (3 vs 1) and iOS requirement (13.0 vs 26.0). On price and ads 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. Derivon sells 5 in-app purchases, starting at $1.99 per month. ひたすら積分 asks for nothing beyond the download.

Scorecard3 real differences · 7 level
Derivon versus ひたすら積分: the parameters behind the verdict, then further details
ParameterDerivonひたすら積分
PriceFreeFree
Rating3.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 5 days—
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS26.013.0 — better
Further details — not scored
Size251 MB21 MB
Age rating4+4+
DeveloperABT合同会社nihei keita

In-app purchases

5 purchases

Derivon

Subscriptions2
  • Derivon Super (Monthly)7 Days trial$1.991 Month
  • Derivon Super (Yearly)7 Days trial$14.991 Year
One-time3
  • 5 Star Fragments$0.99
  • 12 Star Fragments$1.99
  • 32 Star Fragments$3.99
None

ひたすら積分

No in-app purchases

Questions

Is Derivon free?
Derivon is free to download, with in-app purchases available.
Is ひたすら積分 free?
ひたすら積分 is free to download, with no in-app purchases.
Do Derivon or ひたすら積分 have ads?
Both Derivon and ひたすら積分 show ads.

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