# Derivative vs Probability(Math Drills)

The clearest difference is ads: Probability(Math Drills) at none against Derivative's shown. Probability(Math Drills) also leads on iOS requirement (12.0 vs 15.1). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Derivative ships an update monthly, Probability(Math Drills) every 3 weeks. The most recent releases landed on September 8, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Derivative | Probability(Math Drills) |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 3 weeks** |
| Size | 37 MB | 28 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) | [郷 田村](https://appshunter.io/developer/1574588679) |

## What reviewers say

### Derivative

[App page](https://appshunter.io/ios/app/derivative-calculus/id1618969952)

**Features:** macOS Compatibility

**In-app purchases:** none


### Probability(Math Drills)

[App page](https://appshunter.io/ios/app/probabilitymath-drills/id1632889899)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Derivative free?

Derivative is free to download, with no in-app purchases.

### Is Probability(Math Drills) free?

Probability(Math Drills) is free to download, with no in-app purchases.

### Do Derivative or Probability(Math Drills) have ads?

Derivative shows ads; Probability(Math Drills) does not.

### Which is updated more often, Derivative or Probability(Math Drills)?

Derivative ships an update monthly, and Probability(Math Drills) every 3 weeks. Most recently, Derivative was updated on September 8, 2026 and Probability(Math Drills) on September 26, 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.*