Comparison

Onion Browser vs Winmail Viewer

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

Head to head
About

Onion Browser

This app provides a secure and private way to browse the internet using the Tor network. It protects your privacy from trackers, secures your traffic on public Wi-Fi, and allows access to .onion sites. It also offers features to block scripts and clear cookies automatically.

Highlights
  • Browse internet over Tor
  • Protect privacy from website tracking
  • Secure traffic on insecure networks
  • Access .onion sites
  • Block scripts
  • Automatically clear cookies and tabs
Features
Read full description

Onion Browser is the original free and open-source Tor-powered web browser for iOS. Onion Browser helps you access the internet with more safety and privacy, and no extra cost to you. “The best Tor-related offering on iOS right now is Onion Browser” - The Daily Dot, October 14, 2015. Featured in: The New York Times, The Guardian, Salon, TechCrunch, Gizmodo, Boing Boing, Lifehacker, Macworld, The Daily Dot, & others. FEATURES: • Browse the internet over Tor: - Protect your privacy from website tracking - Secure your traffic from insecure wireless networks and ISPs - Access .onion sites that are only accessible over Tor. • Fight online tracking: block scripts and automatically clear cookies and tabs, based on your preferences. • And more privacy-enhancing features! DISCLAIMERS: - Web browsing is much slower than through a normal web browser or a VPN because your traffic is encrypted and relayed through the Tor network. - Onion Browser might not work on networks with advanced network restrictions. If the app does not connect, try using bridges (or a different type of bridge), force-quit, and then restart the app. - Use of Onion Browser is at your own risk; remember that sensitive data does not always belong on a mobile device. ** Onion Browser is free and open-source software. You can read more about Onion Browser and how to support development of Tor on iOS by visiting onionbrowser.com **

About

Winmail Viewer

Effortlessly open and view various email attachment formats, including Winmail.dat and MSG files. Extract embedded documents and images, and manage your files with integrated storage. Supports a wide range of email and document types for seamless access.

Highlights
  • Open Winmail.dat, MSG, OFT, XPS/OXPS, and EML files
  • Extract attachments like PDFs and Office documents
  • View formatted messages with original layout
  • Search messages by subject, sender, or keyword
  • Save and organize files with SwiftData storage
  • Dark Mode support
  • iOS Files app integration
Features
Read full description

Open and view Winmail.dat (Microsoft TNEF), MSG, OFT, XPS/OXPS, and EML files instantly on iPhone and iPad. Access Outlook-generated attachments, decode hidden content, and extract files in seconds. Winmail Viewer is designed to open Microsoft Outlook and Exchange email formats that many apps can’t read. Whether you receive a Winmail.dat (TNEF) attachment or an Outlook MSG/OFT message file, the app decodes and displays the full content — including formatted messages and embedded attachments — so nothing is lost. Open files directly from Mail, Files, AirDrop, or any supported app, and instantly access the message body, documents, and images inside. SUPPORTED FILE TYPES • Winmail.dat (Microsoft TNEF) — Decode Transport Neutral Encapsulation Format files generated by Outlook and Exchange • MSG — Open standalone Microsoft Outlook message files with full formatting and attachments • OFT — View Outlook email template files • EML — Read standard email message files from most email clients • XPS / OXPS — Open Microsoft XML Paper Specification documents with a smooth, PDF-like reading experience WHAT YOU CAN EXTRACT • Attachments including PDF, Word (DOC/DOCX), Excel (XLS/XLSX), PowerPoint (PPT/PPTX) • Images (JPG, PNG, GIF, TIFF, and more) • Rich Text (RTF) and HTML-formatted messages • Embedded files and hidden Outlook content KEY FEATURES • Instantly open Winmail.dat (TNEF), MSG, OFT, XPS/OXPS, and EML files • View fully formatted messages with original layout preserved • Extract and share attachments in seconds • Reply to or forward messages directly from the app • Search by subject, sender, or keyword • Save and organize files with fast SwiftData storage • Dark Mode for comfortable reading • Full integration with the iOS Files app No more “winmail.dat” confusion. Open, decode, extract, and share Outlook attachments effortlessly. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Onion Browser4 screens
Winmail Viewer4 screens

Verdict

The call

The clearest difference is review sentiment: Winmail Viewer at 100% against Onion Browser's 42%. Winmail Viewer also leads on rating (4.7 vs 3.2) and update cadence (every 9 days vs every 3 weeks). Onion Browser's advantage is ratings volume (2.1K vs 19) and iOS requirement (15.0 vs 17). On price, ads, in-app purchases and monetization model 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. Onion Browser sells 3 one-off in-app purchases and Winmail Viewer sells 4 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Winmail Viewer holds the better App Store score, 4.7 against 3.2. That said, the two scores are not equally well evidenced: Onion Browser has 2.1K ratings behind it against 19, so its average is the more settled of the two. Written reviews point the same way: 42% of Onion Browser's written reviews are positive against 100% of Winmail Viewer's.

UpkeepUpdate frequency

Onion Browser ships an update every 3 weeks, Winmail Viewer every 9 days. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

Scorecard5 real differences · 5 level
Onion Browser versus Winmail Viewer: the parameters behind the verdict, then further details
ParameterOnion BrowserWinmail Viewer
PriceFreeFree
Rating3.2 (2.1K ratings)4.7 (19 ratings) — better
Positive reviews41.8% of reviews100.0% of reviews — better
Number of ratings2.1K — better19
Update frequencyEvery 3 weeksEvery 9 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS15.0 — better17
Further details — not scored
Size86 MB25 MB
Age rating17+4+
DeveloperMike Tigas延平 陈

Customer experience

Onion Browser

All ratings2,136 ratings
Positive52.4%
Neutral8.1%
Negative39.4%
Written reviews450 reviews
Positive41.8%
Neutral7.3%
Negative50.9%

Winmail Viewer

All ratings19 ratings
Positive94.7%
Neutral0.0%
Negative5.3%
Written reviews15 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Onion Browser

Reported bugs

4 issues
  • Fails to connect to Tor network
  • Crashes or freezes when switching apps
  • Compatibility issues with newer iOS versions
  • Inability to disable JavaScript completely

Requested features

4 requests
  • Add option to disable JavaScript
  • Improve tab management and browsing experience
  • Integrate with more privacy-focused search engines
  • Allow setting custom default search engine

Winmail Viewer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Onion Browser

One-time3
  • Small Onion Browser Tip$0.99
  • Medium Onion Browser Tip$4.99
  • Large Onion Browser Tip$9.99
4 purchases

Winmail Viewer

Subscriptions3
  • Premium Monthly$1.991 Month
  • Premium Weekly$1.997 Days
  • Premium Yearly$5.991 Year
One-time1
  • Lifetime Premium Access$9.99

Questions

Is Onion Browser free?
Onion Browser is free to download, with in-app purchases available.
Is Winmail Viewer free?
Winmail Viewer is free to download, with in-app purchases available.
Which has better reviews, Onion Browser or Winmail Viewer?
Winmail Viewer is rated higher. Onion Browser averages 3.2 out of 5 from 2.1K ratings, while Winmail Viewer averages 4.7 from 19 ratings.
Do Onion Browser or Winmail Viewer have ads?
Neither Onion Browser nor Winmail Viewer shows ads.
Which is updated more often, Onion Browser or Winmail Viewer?
Onion Browser ships an update every 3 weeks, and Winmail Viewer every 9 days. Most recently, Onion Browser was updated on October 24, 2026 and Winmail Viewer on October 22, 2026.

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