56
BU Score
Solid
Winmail File Viewer & Opener
✍️ bumetric analysis
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Winmail File Viewer & Opener is an iOS app from An Sinh Pham in the Business category, currently rated 4.1★ across 82 ratings. Initial signal reads as mostly critical sentiment so far: users flag rough edges and unmet expectations.
Our BU Score puts it at 56: Solid (established niche player). For a Business app, that means established niche player.
Track changes month-over-month in the Performance section below: live snapshot history and revenue forecast included.
📊 Performance Tracking LIVE
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
Range:
💰 Forecast Revenue / mo
MODELRevenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 6 of 6 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Paid app ($0.00)METRIC | +$2,800 | |
| Mature app (15y old)METRIC | +$1,500 | |
| Multilingual (12 languages)METRIC | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| Good rating (4.1★)METRIC | +$800 | |
| Pre-traction phase (82 ratings)METRIC | −$300 |
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)
📈 Reviews Growth
LIVECumulative review count from first BU snapshot. Each point = a tracked update.
⭐ Rating Trend
LIVEAverage rating evolution. Updates with each new review batch.
🗓️ Snapshot Timeline
HISTORYEach bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →💾 8 MB🔞 4+📱 iOS 17.0+🔖 v5.11🔄 updated 1mo ago🌐 NL, FR, DE, IT, JA +7📂 Business💰 Paid🚀 Launched 2010 (15y old)
📝 About this app
Winmail File Viewer & Opener lets you open winmail.dat files on iPhone, iPad, and Mac - and extract the real attachments inside.
Some emails from Microsoft Outlook / Exchange arrive as a winmail.dat file (also called TNEF), which can hide the attachments you actually need. This app decodes the file so you can view its contents and save the attachments in seconds.
Private by design: everything is processed on-device, works offline, and requires no account.
How it works
1. Import a winmail.dat file from Mail, Files, or the Share Sheet
2. View the message contents and attachment list
3. Extract and save attachments to the Files app, or share them anywhere
Key features
- Open winmail.dat / TNEF quickly
- Preview and extract common attachments (PDF, DOCX, images, and more)
- One-tap Save, Share, or Copy
- Works across iPhone, iPad, and Mac
- Lightweight interface designed for fast access
If you regularly receive emails with missing Outlook attachments, this is the easiest way to open winmail.dat and get your files back.
Privacy Policy: https://www.winmailviewer.com/privacy
Terms of Use: https://www.winmailviewer.com/terms
EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Some emails from Microsoft Outlook / Exchange arrive as a winmail.dat file (also called TNEF), which can hide the attachments you actually need. This app decodes the file so you can view its contents and save the attachments in seconds.
Private by design: everything is processed on-device, works offline, and requires no account.
How it works
1. Import a winmail.dat file from Mail, Files, or the Share Sheet
2. View the message contents and attachment list
3. Extract and save attachments to the Files app, or share them anywhere
Key features
- Open winmail.dat / TNEF quickly
- Preview and extract common attachments (PDF, DOCX, images, and more)
- One-tap Save, Share, or Copy
- Works across iPhone, iPad, and Mac
- Lightweight interface designed for fast access
If you regularly receive emails with missing Outlook attachments, this is the easiest way to open winmail.dat and get your files back.
Privacy Policy: https://www.winmailviewer.com/privacy
Terms of Use: https://www.winmailviewer.com/terms
EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
🆕 What's New · v5.11
- Cleaner, distraction-free interface
- Bug fixes and performance improvements
- Improved error messages with full localization
- Added support for more languages
- Bug fixes and performance improvements
- Improved error messages with full localization
- Added support for more languages
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Winmail File Viewer & Opener
- Developer
- An Sinh Pham
- Bundle ID
- com.HirenBhatt.iTNEF
- App Store URL
- Open in App Store
- Category
- Business
- Content rating
- 4+
- Languages
- NL, FR, DE, IT, JA, KO, PT, RU, ZH, ES, SV, VI
Company
- Website
- www.winmailviewer.com
- Tagline
- Never Struggle with winmail.dat Files Again
- Description
- Open winmail.dat files on iPhone and iPad. Extract Outlook attachments, documents, and images from TNEF files privately on your device.
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- OG image
Revenue
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- ML model estimate / mo
- $8.2K/mo
- Top-grossing rank
- Outside top 100 in US Business
- All-time revenue
- Not found
- Pricing
- Not found
Founder
- Name
- Not found
- X / Twitter
- Not found
- Not found
- GitHub
- Not found
- X followers
- Not found
- Public statements
- Not found
Funding
- Total raised
- Not found
- Last round
- Not found
- Investors
- Not found
- Crunchbase
- Not found
- AngelList
- Not found
Press & Links
- Articles found
- Not found
- Listed on
- Not found
- Blog
- Not found
- Press / News
- Not found
Contacts & Socials
- Socials
- Not found
- Not found
- Phone
- Not found
- Contact page
- https://www.winmailviewer.com/support
- About page
- Not found
⭐Recent App Store Reviews49 latest · avg 2.71★ · 32.7% 5★ · 49.0% 1★
5★16 (33%)
4★4 (8%)
3★3 (6%)
2★2 (4%)
1★24 (49%)
+0 ratings/week
Praise: great ×8 love ×3 awesome ×1 excellent ×1 best ×1Complaints: refund ×3
Top positive
★★★★★ great app!
Was having trouble opening attachments hubby would email from work. They came as winmail.dat and I couldn't ever read them. I googled the issue and was lead to the App Store ... most useful app I've bought so far. Easy to use...j…
★★★★★ Great
Great app to see win mail extension from your mail app…
Top negative
★☆☆☆☆ doesn’t work
i doesn’t like to use this app and it can not solve the problem for us to use this app to open the winmail files in times.…
★☆☆☆☆ Horrible
If I could give 0 stars I would. Purchased the monthly access, and it still doesn’t allow me to view any files. Waste of money, look elsewhere!…
📈Ratings growth82 ratings+-33% lifetimeShow 3-year history estimate ▾
Tracked (59 weeks) Pre-tracking estimate (37 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Geographic ReachNot ranked
This app is currently outside the top 100 grossing in all 9 countries we monitor (US, UK, DE, FR, JP, CA, AU, BR, IN). Niche or new apps often launch this way — popularity rankings appear once daily revenue clears the regional threshold.
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
Full revenue analysis
Read the article-style breakdown for Winmail File Viewer & Opener: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.