# Derivative vs Calculus AI

The clearest difference is price: Calculus AI at Free against Derivative's $1.99. Derivative's advantage is in-app purchases (none vs 2). On update cadence, ads, device support and iOS requirement there is nothing between them.

Calculus AI is free to download; Derivative costs $1.99 up front. Calculus AI sells 2 in-app purchases, starting at $4.99 per 7 days. Derivative asks for nothing beyond the download.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Derivative | Calculus AI |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Size | 32 MB | 12 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) | [Chnini Ramdhane](https://appshunter.io/developer/1849606882) |

## What reviewers say

### Derivative

[App page](https://appshunter.io/ios/app/derivative-calculus-pro/id1618965619)

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

**In-app purchases:** none


### Calculus AI

[App page](https://appshunter.io/ios/app/calculus-ai-homework-helper/id6758545557)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $4.99 | per 7 days |
| Yearly Premium | $29.99 | per year |


## Frequently asked questions

### Is Derivative free?

Derivative costs $1.99, with no in-app purchases.

### Is Calculus AI free?

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

### Do Derivative or Calculus AI have ads?

Neither Derivative nor Calculus AI shows ads.

### Which is updated more often, Derivative or Calculus AI?

Derivative ships an update monthly, and Calculus AI monthly. Most recently, Derivative was updated on October 30, 2026 and Calculus AI on October 28, 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.*