# DartPDF vs NexternAI

The clearest difference is update cadence: DartPDF at every 3 days against NexternAI's weekly. DartPDF also leads on device support (4 vs 2). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

DartPDF ships an update every 3 days, NexternAI weekly. The most recent releases landed on September 10, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | DartPDF | NexternAI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Weekly |
| Size | 47 MB | 9 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Railway Engineering Solutions Pty Ltd](https://appshunter.io/developer/1565117809) | [Umar Muzaffar](https://appshunter.io/developer/1896628957) |

## What reviewers say

### DartPDF

[App page](https://appshunter.io/ios/app/dartpdf/id6780083686)

**Features:** Vision Pro support

**In-app purchases:** none


### NexternAI

[App page](https://appshunter.io/ios/app/nexternai-mock-interview-prep/id6782328023)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DartPDF free?

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

### Is NexternAI free?

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

### Do DartPDF or NexternAI have ads?

Neither DartPDF nor NexternAI shows ads.

### Which is updated more often, DartPDF or NexternAI?

DartPDF ships an update every 3 days, and NexternAI weekly. Most recently, DartPDF was updated on September 10, 2026 and NexternAI 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.*