Karakeep App vs Duo Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Karakeep App
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.
- Automatic AI tagging
- Full-text search
- Custom lists
- Sharing extension
- Save links, notes, and images
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Quickly save links, notes, and images and karakeep will automatically tag them for you using AI for faster retrieval. Content (including link contents) are indexed for blazing fast full text search. Organize you items into custom lists. Sharing extension to hoard items from any other apps.
Duo Viewer
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Make room for two with Duo Viewer, a split-screen browser and file viewer for iPhone. YOUR FAVOURITE WEB APPS, TOGETHER Open two websites on one screen. Compare pages, browse social feeds alongside online video, or keep a reference page within view. Drag the divider to adjust your workspace, minimise a pane when you need more room, and turn your iPhone for a landscape layout. FILES BESIDE THE WEB Import files from the Files app and organise them in Duo Viewer. View PDFs, supported Office and iWork documents, images, text, audio, and video alongside a website or another file. MAKE IT YOUR WORKSPACE • Browse websites in two panes • Save bookmarks and revisit recent addresses • Open links in the other pane • Resize panes and use portrait or landscape mode • Import, view, rename, and delete supported files • Resume your saved workspace
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Duo Viewer sells 1 one-off in-app purchase. Karakeep App asks for nothing beyond the download.
| Parameter | Karakeep App | Duo Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (44 ratings) — better | — |
| Positive reviews | 70.6% of reviews | — |
| Number of ratings | 44 — better | — |
| Update frequency | Every 5 weeks | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, Mac — better | iPhone |
| Requires iOS | 16.4 — better | 26.0 |
| Further details — not scored | ||
| Size | 56 MB | 2 MB |
| Age rating | 17+ | 17+ |
| Developer | Mohamed Bassem | Liangjun Song |
In-app purchases
Karakeep App
No in-app purchases
Duo Viewer
- Duo Viewer Pro$6.99
