Diigo Browser vs Ninja Browser for iPhone
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Diigo Browser
Save, sync, and annotate web pages and PDFs across devices. Easily share your saved content with highlights and sticky notes. Access your bookmarks anytime, anywhere.
- Save and sync bookmarks
- Annotate web pages with highlights
- Add sticky notes to web pages
- Read saved PDF files
- Share bookmarks with annotations
- Cross-device access
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Diigo Browser allows you to save, annotate and share bookmarks easily! Save and sync You can use Diigo Browser to save web pages to your Diigo account and the bookmarks will sync across your devices so that you can access them anytime, anywhere later. Annotate while reading Diigo Browser allows you to annotate web pages with highlights and sticky notes. The annotate button will pop up in the context menu after you select some text! PDF reading You can read your saved PDF files within the app directly and we will consider supporting PDF annotation in the future! Share easily You can share your bookmarks with annotations to others through email or IM or send it to other apps easily. We will keep working on the improvements of Diigo Browser to make it better and better. Please feel free to contact us at care@diigo.com if you have any questions or suggestions.
Ninja Browser for iPhone
Quickly conceal your browsing activity with a simple gesture. This app allows you to hide your screen instantly without any audible cues, ensuring your privacy is maintained.
- Instant screen hiding
- Gesture controls (flick or multi-finger touch)
- Silent operation
- Privacy enhancement
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Want to hide your browser quickly ? If so, use NINJA BROWSER ! This application can hide your screen without any click sounds. Just Flick the Left or Right. Or Touch your screen with two or three finger. Your browser will hide Soon !! Try It !!
Screenshots
Verdict
The clearest difference is rating: Ninja Browser for iPhone at 5.0 against Diigo Browser's 4.5. Ninja Browser for iPhone also leads on iOS requirement (10.0 vs 16.0). Diigo Browser's advantage is ads (none vs shown) and ratings volume (561 vs 3). On price, update cadence, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.
Ninja Browser for iPhone holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Diigo Browser has 561 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 59% of Diigo Browser's written reviews are positive against 50% of Ninja Browser for iPhone's, so the app with the better star average is not the one people write more warmly about.
Diigo Browser ships an update every 2 weeks, Ninja Browser for iPhone fortnightly. The most recent releases landed on October 11, 2026 and October 4, 2026 respectively.
| Parameter | Diigo Browser | Ninja Browser for iPhone |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (561 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 58.7% of reviews — better | 50.0% of reviews |
| Number of ratings | 561 — better | 3 |
| Update frequency | Every 2 weeks — better | Fortnightly |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 172 MB | 20 MB |
| Age rating | 17+ | 17+ |
| Developer | Diigo Inc. | Sho Kurozumi |
Customer experience
Diigo Browser
Ninja Browser for iPhone
Bugs and requests
Diigo Browser
Reported bugs
4 issues- Login and sign-up issues
- Sync problems across devices
- Annotation and highlighting bugs
- Crashes and performance issues
Requested features
4 requests- Improved search and filtering
- Offline reading and caching
- Customizable organization and folders
- Better integration with other apps
Ninja Browser for iPhone
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Diigo Browser
No in-app purchases
Ninja Browser for iPhone
No in-app purchases
Questions
Is Diigo Browser free?
Is Ninja Browser for iPhone free?
Which has better reviews, Diigo Browser or Ninja Browser for iPhone?
Do Diigo Browser or Ninja Browser for iPhone have ads?
Which is updated more often, Diigo Browser or Ninja Browser for iPhone?
Other comparisons
