Comparison

Private Browser vs Diigo Browser

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Private Browser

Browse the internet anonymously and securely with advanced encryption and proxy technology. Protect your online activity from prying eyes and hide your location by selecting servers worldwide. Offers local security features for individual app access.

Highlights
  • Anonymous internet surfing
  • Proxy technology over VPN
  • Powerful encryption methods
  • Global server selection
  • Local security (passcode, Touch ID)
  • Clear-all-browsing-data feature
Features
Read full description

* Private Browser for Secure & Anonymous Internet Surfing * If you want to browse the Internet fast on your iPhone and iPad with all advantages of anonymity, security and data protection with proxy technology over VPN servers, download Private Browser. Private Browser - is a revolutionary web surfing solution with unique easy-to-use UI. It uses powerful methods of encryption, ensuring 100% of online security. All of your web activity will be safe and hidden from the prying eyes. Featuring online protection, Private Browser is about secure and anonymous web surfing experience. This application is based on exclusive technology from KeepSolid Inc. Private Browser allows secure online surfing activity and is supported by the use of a variety of encryption methods. There are no other equivalents of the browser available today on the market. It utilizes only secure connection, which greatly contributes to user’s online safety. As a reliable privacy tool, you can select a server in any country from our list and hide your actual location. Private Browser is the best alternative for Chrome, Mercury, Firefox, Opera. Key Features 1. Browser Protection with the use of powerful encryption methods 2. Easy global server selection 3. Local security 4. Individual application access Local Protection 1. Pattern Lock 2. Pass Code Availability 3. Password 4. Touch ID Safety 1. Choose Your Own Server 2. Anonymous Internet Surfing 3. Fast connection speed 4. Output/Input data encryption 5. Standard mode and improved security mode 6. Clear-all-browsing-data feature Unique Design 1. Convenient & fast tab scroll 2. Visible & Hidden IP on a Map 3. User-Friendly Design 4. Fast Adapting Tabs 1. Open more than 25 tabs simultaneously 2. Basic authorization 3. Google Default Search Engine Bookmarks 1. Bookmark menu (iPhone, iPad) 2. Add, move, delete bookmarks and folders 3. Create new bookmark folders Private Browser is free to download and try for 7 days. We offer 2 auto-renewing subscription options: - Monthly - Yearly - Payment will be charged to iTunes Account at confirmation of purchase. - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. - Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user’s Account Settings after purchase. - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. https://www.keepsolid.com/privacy-policy https://www.keepsolid.com/eua

About

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.

Highlights
  • 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
Features
Read full description

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.

Screenshots

Private Browser4 screens
Diigo Browser4 screens

Verdict

The call

The clearest difference is in-app purchases: Diigo Browser at none against Private Browser's 3. Diigo Browser also leads on update cadence (every 2 weeks vs every 6 weeks). Private Browser's advantage is review sentiment (81% vs 59%) and iOS requirement (9.0 vs 16.0). On price, rating, ratings volume 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Private Browser sells 3 in-app purchases, starting at $1.99 per month. Diigo Browser asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for Private Browser against 4.5 for Diigo Browser. Both are backed by a comparable volume of ratings — 768 and 561 respectively. Written reviews are what separate them: 81% of Private Browser's written reviews are positive against 59% of Diigo Browser's.

UpkeepUpdate frequency

Private Browser ships an update every 6 weeks, Diigo Browser every 2 weeks. The most recent releases landed on October 20, 2026 and October 11, 2026 respectively.

Scorecard5 real differences · 5 level
Private Browser versus Diigo Browser: the parameters behind the verdict, then further details
ParameterPrivate BrowserDiigo Browser
PriceFreeFree
Rating4.5 (768 ratings)4.5 (561 ratings) — better
Positive reviews81.2% of reviews — better58.7% of reviews
Number of ratings768 — better561
Update frequencyEvery 6 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS9.0 — better16.0
Further details — not scored
Size67 MB172 MB
Age rating17+17+
DeveloperKeepSolid Inc.Diigo Inc.

Customer experience

Private Browser

All ratings766 ratings
Positive86.2%
Neutral5.4%
Negative8.5%
Written reviews319 reviews
Positive81.2%
Neutral2.2%
Negative16.6%

Diigo Browser

All ratings561 ratings
Positive87.7%
Neutral2.5%
Negative9.8%
Written reviews150 reviews
Positive58.7%
Neutral6.7%
Negative34.7%

User reviews

Private Browser

From 768 App Store ratings

What we love

  • 🚀 Fast and efficient
  • 🔒 Secure and private
  • 👍 User-friendly interface
  • 💡 Useful features like VPN and content blocking

Room to improve

  • 🐛 Buggy and crashes frequently
  • 🔋 High data and battery usage
  • 📉 Unreliable and inconsistent performance
  • 💰 Expensive subscription model

Diigo Browser

From 561 App Store ratings

What we love

  • 💡 Useful for research and organization
  • 👍 Syncs across devices
  • 🚀 Efficient for bookmarking and annotating

Room to improve

  • 🐛 Buggy and crashes frequently
  • 🔨 Lacking in features and functionality
  • 🔍 Search and discovery issues
  • 🔒 Login and sync problems

Bugs and requests

Private Browser

Reported bugs

3 issues
  • Login issues and account management problems
  • Websites not loading properly or SSL connections failing
  • Frequent crashes and app shutdowns

Requested features

4 requests
  • Dark mode option
  • Improved compatibility with older devices
  • Better integration with other security/privacy tools
  • Offline browsing capabilities

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

In-app purchases

3 purchases

Private Browser

Subscriptions2
  • Auto-Renewable Subscription7 Days trial$1.991 Month
  • Auto-Renewable Subscription7 Days trial$19.991 Year
One-time1
  • Lifetime Subscription$99.99
None

Diigo Browser

No in-app purchases

Questions

Is Private Browser free?
Private Browser is free to download, with in-app purchases available.
Is Diigo Browser free?
Diigo Browser is free to download, with no in-app purchases.
Which has better reviews, Private Browser or Diigo Browser?
Diigo Browser is rated higher. Private Browser averages 4.5 out of 5 from 768 ratings, while Diigo Browser averages 4.5 from 561 ratings.
Do Private Browser or Diigo Browser have ads?
Neither Private Browser nor Diigo Browser shows ads.
Which is updated more often, Private Browser or Diigo Browser?
Private Browser ships an update every 6 weeks, and Diigo Browser every 2 weeks. Most recently, Private Browser was updated on October 20, 2026 and Diigo Browser on October 11, 2026.

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