# Derivative vs Stellar Math

The clearest difference is price: Stellar Math at Free against Derivative's $1.99. Derivative's advantage is in-app purchases (none vs 2) and update cadence (monthly vs every 8 months). On ads, device support and iOS requirement there is nothing between them.

Stellar Math is free to download; Derivative costs $1.99 up front. Stellar Math sells 2 in-app purchases, starting at $9.99 per month. Derivative asks for nothing beyond the download.

Derivative ships an update monthly, Stellar Math every 8 months. The most recent releases landed on October 11, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Derivative | Stellar Math |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/stellar-math/id6753595457/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 8 months |
| Monetization | — | Freemium |
| Size | 32 MB | 113 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) | [Matthew Leonard](https://appshunter.io/developer/522479113) |

## 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


### Stellar Math

[App page](https://appshunter.io/ios/app/stellar-math/id6753595457)

Master math with an AI tutor that adapts to your learning style and pace. Get instant, step-by-step solutions to problems by snapping a photo and engage with a 24/7 AI chat for clear explanations. Track your progress and build confidence from basic arithmetic to advanced calculus.

**Highlights:** AI-powered step-by-step solutions, Photo problem solver, Interactive AI tutor chat, Personalized study plans, Progress tracking and analytics, Comprehensive math topic coverage

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stellar Math Pro | $9.99 | per month |
| Stellar Math Pro Yearly | $69.99 | per year |


## Frequently asked questions

### Is Derivative free?

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

### Is Stellar Math free?

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

### Do Derivative or Stellar Math have ads?

Neither Derivative nor Stellar Math shows ads.

### Which is updated more often, Derivative or Stellar Math?

Derivative ships an update monthly, and Stellar Math every 8 months. Most recently, Derivative was updated on October 11, 2026 and Stellar Math on September 29, 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.*