# Implicit Differentiation Cal vs Differential Evolution

The clearest difference is update cadence: Differential Evolution at daily against Implicit Differentiation Cal's every 9 months. Differential Evolution also leads on iOS requirement (11.0 vs 13.0). On price, ads, 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, Differential Evolution daily. The most recent releases landed on December 5, 2025 and September 9, 2026 respectively.

## The numbers

| Metric | Implicit Differentiation Cal | Differential Evolution |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Daily** |
| Size | 24 MB | 33 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ahmad Sattar](https://appshunter.io/developer/1458483953) | [Jakub Sosna](https://appshunter.io/developer/1610607884) |

## What reviewers say

### Implicit Differentiation Cal

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Differential Evolution

[App page](https://appshunter.io/ios/app/differential-evolution/id1662013881)

**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 Differential Evolution free?

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

### Do Implicit Differentiation Cal or Differential Evolution have ads?

Neither Implicit Differentiation Cal nor Differential Evolution shows ads.

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

Implicit Differentiation Cal ships an update every 9 months, and Differential Evolution daily. Most recently, Implicit Differentiation Cal was updated on December 5, 2025 and Differential Evolution on September 9, 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.*