# Implicit Differentiation Cal vs Equation

The clearest difference is ads: Implicit Differentiation Cal at none against Equation's shown. Implicit Differentiation Cal also leads on iOS requirement (13.0 vs 15.1). Equation's advantage is update cadence (monthly vs every 9 months). On price, 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.

Implicit Differentiation Cal ships an update every 9 months, Equation monthly. The most recent releases landed on September 18, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Implicit Differentiation Cal | Equation |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Monthly** |
| Size | 24 MB | 34 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ahmad Sattar](https://appshunter.io/developer/1458483953) | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) |

## What reviewers say

### Implicit Differentiation Cal

[App page](https://appshunter.io/ios/app/implicit-differentiation-cal/id1607963477)

**Features:** macOS Compatibility

**In-app purchases:** none


### Equation

[App page](https://appshunter.io/ios/app/equation-solver/id1618982230)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Implicit Differentiation Cal free?

Implicit Differentiation Cal is free to download, with no in-app purchases.

### Is Equation free?

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

### Do Implicit Differentiation Cal or Equation have ads?

Equation shows ads; Implicit Differentiation Cal does not.

### Which is updated more often, Implicit Differentiation Cal or Equation?

Implicit Differentiation Cal ships an update every 9 months, and Equation monthly. Most recently, Implicit Differentiation Cal was updated on September 18, 2026 and Equation on September 20, 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.*