# Karakeep App vs Duo Viewer

The clearest difference is in-app purchases: Karakeep App at none against Duo Viewer's 1. Karakeep App also leads on device support (3 vs 1) and iOS requirement (16.4 vs 26.0). On price and ads there is nothing between them.

Both are free to download. Duo Viewer sells 1 one-off in-app purchase. Karakeep App asks for nothing beyond the download.

## The numbers

| Metric | Karakeep App | Duo Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (44 ratings)](https://appshunter.io/ios/app/karakeep-app/id6479258022/reviews)** | — |
| Number of ratings | **44** | — |
| Positive reviews | 70.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | — |
| Monetization | Free | — |
| Size | 56 MB | 2 MB |
| Requires iOS | **16.4** | 26.0 |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Mohamed Bassem](https://appshunter.io/developer/1735323299) | [Liangjun Song](https://appshunter.io/developer/6816411623) |

## What reviewers say

### Karakeep App

[App page](https://appshunter.io/ios/app/karakeep-app/id6479258022)

Effortlessly save links, notes, and images with automatic AI-powered tagging for quick retrieval. Search through all your saved content, including link contents, at blazing fast speeds. Organize your saved items into custom lists and share content from any app.

**Highlights:** Automatic AI tagging, Full-text search, Custom lists, Sharing extension, Save links, notes, and images

**Features:** Vision Pro support

**In-app purchases:** none


### Duo Viewer

[App page](https://appshunter.io/ios/app/duo-viewer/id6816411621)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Duo Viewer Pro | $6.99 | one-time |


## Frequently asked questions

### Is Karakeep App free?

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

### Is Duo Viewer free?

Duo Viewer is free to download, with in-app purchases available.

### Do Karakeep App or Duo Viewer have ads?

Neither Karakeep App nor Duo Viewer shows ads.

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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.*