# Derivon vs Hundred Schools Classics

The clearest difference is update cadence: Derivon at every 5 days against Hundred Schools Classics's every 6 weeks. Hundred Schools Classics's advantage is iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Derivon sells 5 in-app purchases, starting at $1.99 per month and Hundred Schools Classics sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Derivon ships an update every 5 days, Hundred Schools Classics every 6 weeks. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Derivon | Hundred Schools Classics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/derivon-calculus-practice/id6761150220/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 5 days** | Every 6 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 251 MB | 15 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ABT合同会社](https://appshunter.io/developer/6813846553) | [akio kobayashi](https://appshunter.io/developer/6804334180) |

## What reviewers say

### Derivon

[App page](https://appshunter.io/ios/app/derivon-calculus-practice/id6761150220)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Derivon Super (Monthly) | $1.99 | per month |
| Derivon Super (Yearly) | $14.99 | per year |
| 5 Star Fragments | $0.99 | one-time |
| 12 Star Fragments | $1.99 | one-time |
| 32 Star Fragments | $3.99 | one-time |


### Hundred Schools Classics

[App page](https://appshunter.io/ios/app/hundred-schools-classics/id6808663006)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 支援プラン | $1.99 | per month |
| 支援プラン（年額） | $19.99 | per year |


## Frequently asked questions

### Is Derivon free?

Derivon is free to download, with in-app purchases available.

### Is Hundred Schools Classics free?

Hundred Schools Classics is free to download, with in-app purchases available.

### Do Derivon or Hundred Schools Classics have ads?

Both Derivon and Hundred Schools Classics show ads.

### Which is updated more often, Derivon or Hundred Schools Classics?

Derivon ships an update every 5 days, and Hundred Schools Classics every 6 weeks. Most recently, Derivon was updated on November 5, 2026 and Hundred Schools Classics on November 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*