# Algebra I Quick Reference vs Derivative

The clearest difference is update cadence: Derivative at monthly against Algebra I Quick Reference's every 36 months. Derivative also leads on device support (3 vs 1). Algebra I Quick Reference's advantage is price ($0.99 vs $1.99) and iOS requirement (12.0 vs 15.1). On ads and in-app purchases there is nothing between them.

Algebra I Quick Reference costs $0.99 and Derivative $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Algebra I Quick Reference ships an update every 36 months, Derivative monthly. The most recent releases landed on September 18, 2026 and August 16, 2026 respectively.

## The numbers

| Metric | Algebra I Quick Reference | Derivative |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 36 months | **Monthly** |
| Size | 4 MB | 32 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) |

## What reviewers say

### Algebra I Quick Reference

[App page](https://appshunter.io/ios/app/algebra-i-quick-reference/id560359498)

**Features:** macOS Compatibility

**In-app purchases:** none


### Derivative

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Algebra I Quick Reference free?

Algebra I Quick Reference costs $0.99, with no in-app purchases.

### Is Derivative free?

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

### Do Algebra I Quick Reference or Derivative have ads?

Neither Algebra I Quick Reference nor Derivative shows ads.

### Which is updated more often, Algebra I Quick Reference or Derivative?

Algebra I Quick Reference ships an update every 36 months, and Derivative monthly. Most recently, Algebra I Quick Reference was updated on September 18, 2026 and Derivative on August 16, 2026.

---

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