53
BU Score
Solid
Msg Viewer Pro
✍️ bumetric analysis
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Msg Viewer Pro is an iOS app from 群群 刘 in the Business category, currently rated 4.0★ across 4 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Our BU Score puts it at 53: 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 9 of 9 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 | |
| 5 starREVIEW | +$1,800 | |
| excellent appREVIEW | +$1,500 | |
| Mature app (10y old)METRIC | +$1,500 | |
| slowREVIEW | −$1,200 | |
| support teamREVIEW | +$900 | |
| Good rating (4.0★)METRIC | +$800 | |
| Single-language (English only)METRIC | −$400 | |
| Pre-traction phase (4 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.
💚Sentiment Over Time↑ green = positive · ↓ red = negative
May 24
Jun 24
Oct 24
Apr 25
May 25
Jul 25
Nov 25
Dec 25
Jan 26
⭐ 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 12.0+🔖 v2.6.2🔄 updated 2y ago🌐 EN📂 Business💰 Paid🚀 Launched 2015 (10y old)
📝 About this app
Msg Viewer Pro: the best, easiest, fastest, and reliable way to view Microsoft Outlook *.msg, *.oft, winmail.dat(Microsoft TNEF), *.mht and *.eml files.
No subscription, just one-time purchase for iPhone, iPad, and Mac.
KEY FEATURES:
◆Easy to use, open msg, winmail, mht and eml files.
◆Quick look msg, winmail, mht and eml files.
◆Add files through iTunes File Sharing.
◆View messages, notes, contacts, and attachments.
◆Share or open document with other App.
◆Preview attachments, Share attachments.
◆Print document.
◆Dark mode supported.
SUPPORT:
Please feel free to contact us if you have any questions about using our products at any time.
Email: support@firmshell.com
No subscription, just one-time purchase for iPhone, iPad, and Mac.
KEY FEATURES:
◆Easy to use, open msg, winmail, mht and eml files.
◆Quick look msg, winmail, mht and eml files.
◆Add files through iTunes File Sharing.
◆View messages, notes, contacts, and attachments.
◆Share or open document with other App.
◆Preview attachments, Share attachments.
◆Print document.
◆Dark mode supported.
SUPPORT:
Please feel free to contact us if you have any questions about using our products at any time.
Email: support@firmshell.com
🆕 What's New · v2.6.2
Fixed bug display image error for eml files
Other small fixes and improvements
Other small fixes and improvements
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Msg Viewer Pro
- Developer
- 群群 刘
- Bundle ID
- com.firmshell.msgviewerpro
- App Store URL
- Open in App Store
- Category
- Business
- Content rating
- 4+
- Languages
- EN
Company
- Website
- www.firmshell.com
- Tagline
- Not found
- Description
- Not found
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Not found
Revenue
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- ML model estimate / mo
- $17.4K/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
- Not found
- About page
- Not found
⭐Recent App Store Reviews49 latest · avg 4.06★ · 65.3% 5★ · 14.3% 1★
5★32 (65%)
4★4 (8%)
3★4 (8%)
2★2 (4%)
1★7 (14%)
+1 ratings/week
Praise: great ×13 perfect ×4 best ×4 excellent ×2 amazing ×2Complaints: crash ×8 subscription ×1 bug ×1 hate ×1 refund ×1
Top positive
★★★★★ The best
This is the best app to view and edit Microsoft Outlook without MS, it's working very fast and easy to use, I would share it to my friends.…
★★★★★ Good app
After I used this app, I can not do without this app anymore. This is the most convenient way to browse Microsoft Outlook. In particular, view email attachments, just press the space bar. Very convenient.…
Top negative
★☆☆☆☆ Can’t handle large .mbox files
I purchased this app so I could browse/search a large (8.5GB) .mbox archive. It loads the archive OK, and you can manually click through emails. But the search is extremely slow and crashes repeatedly, making it this app unusable for this u…
★☆☆☆☆ Won’t open Mbox Files
I needed to open an Mbox file. This app claimed it could, but when I tried to open it, it said it could not. I guess I got ripped off for $4.99…
📈Ratings growth4 ratings+-60% lifetimeShow 3-year history estimate ▾
Tracked (60 weeks) Pre-tracking estimate (36 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 Msg Viewer Pro: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.