# Evran vs Duocortex

The clearest difference is update cadence: Duocortex at every 9 days against Evran's every 2 months. Duocortex also leads on iOS requirement (15.6 vs 18.6). 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.

Evran ships an update every 2 months, Duocortex every 9 days. The most recent releases landed on September 25, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Evran | Duocortex |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Size | 5 MB | 40 MB |
| Requires iOS | 18.6 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Ritter Hold & Invest UG (haftungsbeschränkt)](https://appshunter.io/developer/6793536930) | [Duocortex](https://appshunter.io/developer/1828861021) |

## What reviewers say

### Evran

[App page](https://appshunter.io/ios/app/evran-flashcards/id6747441641)

**Features:** macOS Compatibility

**In-app purchases:** none


### Duocortex

[App page](https://appshunter.io/ios/app/duocortex/id6749133589)

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

**In-app purchases:** none


## Frequently asked questions

### Is Evran free?

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

### Is Duocortex free?

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

### Do Evran or Duocortex have ads?

Neither Evran nor Duocortex shows ads.

### Which is updated more often, Evran or Duocortex?

Evran ships an update every 2 months, and Duocortex every 9 days. Most recently, Evran was updated on September 25, 2026 and Duocortex on September 17, 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.*