Comparison

Fiveoak 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

Fiveoak

Automate your customer feedback system to gather more online reviews. Improve your business rankings and drive more traffic and customers. Focus on your business while this app handles review generation.

Highlights
  • Automated customer feedback system
  • Online review generation
  • Improved business rankings
  • Increased website traffic
  • Direct integration into customer cycle
Features
Read full description

We're on a mission to help you win more business by building you an automated customer feedback system that integrates directly into your existing customer cycle. • More reviews = better rankings • Better rankings = more traffic • More traffic = more business You focus on your business,
 we’ll focus on reviews.

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

Fiveoak3 screens
Winmail Viewer4 screens

Verdict

The call

The clearest difference is in-app purchases: Fiveoak at none against Winmail Viewer's 4. Fiveoak also leads on rating (5.0 vs 4.7). Winmail Viewer's advantage is update cadence (every 9 days vs every 2 months) and ratings volume (19 vs 4). On price, review sentiment, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Winmail Viewer sells 4 in-app purchases, starting at $1.99 per month. Fiveoak asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Fiveoak holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 4 and 19 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Fiveoak ships an update every 2 months, Winmail Viewer every 9 days. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

Scorecard6 real differences · 4 level
Fiveoak versus Winmail Viewer: the parameters behind the verdict, then further details
ParameterFiveoakWinmail Viewer
PriceFreeFree
Rating5.0 (4 ratings) — better4.7 (19 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings419 — better
Update frequencyEvery 2 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS26.017 — better
Further details — not scored
Size5 MB25 MB
Age rating4+4+
DeveloperFiveoak延平 陈

Customer experience

Fiveoak

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Winmail Viewer

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

In-app purchases

None

Fiveoak

No in-app purchases

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 Fiveoak free?
Fiveoak is free to download, with no in-app purchases.
Is Winmail Viewer free?
Winmail Viewer is free to download, with in-app purchases available.
Which has better reviews, Fiveoak or Winmail Viewer?
Fiveoak is rated higher. Fiveoak averages 5.0 out of 5 from 4 ratings, while Winmail Viewer averages 4.7 from 19 ratings.
Do Fiveoak or Winmail Viewer have ads?
Neither Fiveoak nor Winmail Viewer shows ads.
Which is updated more often, Fiveoak or Winmail Viewer?
Fiveoak ships an update every 2 months, and Winmail Viewer every 9 days. Most recently, Fiveoak was updated on October 24, 2026 and Winmail Viewer on October 22, 2026.

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