# Derivon vs Compendium Lab

The clearest difference is ads: Compendium Lab at none against Derivon's shown. Compendium Lab also leads on iOS requirement (17.0 vs 26.0). Derivon's advantage is update cadence (every 5 days vs every 4 weeks). On price, 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 Compendium Lab sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Derivon ships an update every 5 days, Compendium Lab every 4 weeks. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Derivon | Compendium Lab |
| --- | --- | --- |
| 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 | **No** |
| Update frequency | **Every 5 days** | Every 4 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 206 MB | 106 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [ABT合同会社](https://appshunter.io/developer/6813846553) | [Byoungho Kim](https://appshunter.io/developer/1888452963) |

## 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 |


### Compendium Lab

[App page](https://appshunter.io/ios/app/compendium-lab-math-and-ai/id6791996424)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Compendium Lab Pro | $5.99 | one-time |


## Frequently asked questions

### Is Derivon free?

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

### Is Compendium Lab free?

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

### Do Derivon or Compendium Lab have ads?

Derivon shows ads; Compendium Lab does not.

### Which is updated more often, Derivon or Compendium Lab?

Derivon ships an update every 5 days, and Compendium Lab every 4 weeks. Most recently, Derivon was updated on October 28, 2026 and Compendium Lab on October 25, 2026.

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