EML Viewer Pro
39
Quality Score
Emerging
EML Viewer Pro
Low confidence
✍️ bumetric analysis
“
EML Viewer Pro is an iOS app from 群群 刘 in the Business category, currently rated 3.4★ across 9 ratings. Initial signal reads as mostly critical sentiment so far: users flag rough edges and unmet expectations.
Quality Score is 39: Emerging (early traction worth watching). For a Business app, that means early traction worth watching. The full BU Investment Matrix below scores 8 dimensions including monetisation, growth, and operational risk.
Track changes month-over-month in the Performance section below: live snapshot history and revenue forecast included.
💰 Monthly revenue · now vs forecast
● Right now
$1.1K
per month
→
12-mo forecast
$943 – $3400
per month
→
24-mo forecast
$874 – $7864
per month
INDIE tier
💡 Grow this revenue
Free AI audit of this app’s store listing
- Title & subtitle keyword fit
- Description hook & conversion structure
- Screenshots, ratings, reviews strategy
Typical impact: +2-5× organic installs
📊 Performance Tracking LIVE
Loading…
Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD
💰 Estimated build cost
$75K
↳ What it cost to build · not monthly revenue
Likely range $55K – $100K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Slow ROI — current MRR is well below build cost
Synthetic estimate. Inputs: category complexity, file size, screen count, monetization layer, platform reach, age × team-size proxy. Calibrated against 2024-2026 indie-agency rate surveys. Full math + source list on /methodology.
Where the money goes
| 🧱 MVP baseline (design + 1-store ship) | +$28K |
| 📱 5 unique screens × $4.5K | +$22K |
| ⚙ Business complexity ×1.50 | +$25K |
Total estimate
$75K
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$1.1K/mo · ML-estimated from 234 triggers
Growth rate
+6.0% MoM · INDIE tier baseline (compound monthly)
Direction
Headwinds: rating drift may slow acquisition
6 months
$918 – $2.1K
12 months
$943 – $3.4K
24 months
$874 – $7.9K
Compound growth at +6.0% MoM (tier baseline for INDIE). Range widens with horizon — typical noise band ±40% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.
📊
BU Investment Matrix
Pre-traction · 36/100INDIE TIERlimited signalRevenue Strength
3.0
Product Quality
2.8
Market Position
0.0
Growth Velocity
5.0
Defensibility
5.7
Operational Safety
5.0
Founder Strength
6.0
Monetization Maturity
1.0
- 💰 Revenue: Modest — $431 - $2697/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 3.44★ across 9 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 1684d ago — possibly dormant.
- ⚠️ Risk: Elevated — dormant (1684d since update).
🎯 For competitors: Vulnerable. Quality drift + slow updates create a clear opening for a fresh competitor with active dev cadence.
💵 For acquirers: Estimated asking range 18-32× monthly = $19K-$34K. Portfolio play ($17K/mo combined) commands premium.
Composite of 8 dimensions computed deterministically from public signals — no LLM, every score traces back to a measurable input. Default weights shown; "compete" / "acquire" / "invest" lenses re-weight without re-fetching.
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 5 of 5 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 | |
| Below-average rating (3.4★)METRIC | −$1,500 | |
| Mature app (8y old)METRIC | +$1,500 | |
| Single-language (English only)METRIC | −$400 | |
| Pre-traction phase (9 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.
🆕 What's New · v1.5.5
Add reply function
Bug fixes and stability improvements
Bug fixes and stability improvements
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- EML Viewer Pro
- Developer
- 群群 刘
- Bundle ID
- com.firmshell.emlviewerproios
- App Store URL
- Open in App Store
- Category
- Business
- Content rating
- 4+
- Languages
- EN
Company
- Website
- Not found
- Tagline
- Today
- Description
- Find apps and games for iPhone, iPad, Mac, and more on the App Store.
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Available
Revenue
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- ML model estimate / mo
- $459/mo
- Top-grossing rank
- Outside top 100 in US Business
- All-time revenue
- Not found
- Pricing
- Not found
Founder
Founder data not yet collected for this app.
Funding
Funding data not yet collected for this app.
Press & Links
Press & Links data not yet collected for this app.
Contacts & Socials
Contacts & Socials data not yet collected for this app.
⭐Recent App Store Reviews6 latest · avg 3.5★ · 33.3% 5★ · 16.7% 1★
5★2 (33%)
4★2 (33%)
3★0 (0%)
2★1 (17%)
1★1 (17%)
+0 ratings/week
Praise: perfect ×1
Top positive
★★★★★ Works as explained!
Exactly what I need for opening .EML files on the go!…
★★★★★ Perfect
iOS 13 Mail not supporting native .eml file opening? Problem solved. Road warriors, here you go.…
Top negative
★☆☆☆☆ Does not work
I archive work emails in EML format from Thunderbird. This app only turns the screen white and does not open the EML file. Waste of 2$ enjoy it……
★★☆☆☆ Nonsense.
Decoded header of forwarded message. Nothing else.…
📈Ratings growth9 ratings+800% lifetimeShow 3-year history estimate ▾
Tracked (9 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.
💰Pricing History$0.00 → $1.99 (+0%)
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.
📝 About this app
EML Viewer Pro: the easiest, fastest, reliable way to view *.eml files.
KEY FEATURES:
◆Easy to use, open eml files directly from other applications on your device.
◆Easy add eml files through iTunes File Sharing.
◆View messages and attachments.
◆Share or open document with other App.
◆Preview attachments, Share attachments.
◆Print document.
SUPPORT:
Please feel free to contact us if you have any questions about using our products at any time.
Email: support@firmshell.com
KEY FEATURES:
◆Easy to use, open eml files directly from other applications on your device.
◆Easy add eml files through iTunes File Sharing.
◆View messages and attachments.
◆Share or open document with other App.
◆Preview attachments, Share attachments.
◆Print document.
SUPPORT:
Please feel free to contact us if you have any questions about using our products at any time.
Email: support@firmshell.com
App Specs
🔐 Own this app? Claim & verify MRR →💾 506 KB🔞 4+📱 iOS 12.0+🔖 v1.5.5🔄 updated 0d ago🌐 EN📂 Business💰 Paid
📅
What Worked™ · Development Pipeline
8 EVENTS TRACKEDDetected changes in this app over its tracked lifetime — each event links cause (what changed) to effect (what moved). Sorted newest first.See full history →Version history →
2026-05
⭐
Rating ↑ 1.00 → 3.44 (improved 2.44★)
2026-05
💲
Went paid — introduced $1.99 price point
2026-03
⭐
Rating ↓ 3.14 → 1.00 (dropped 2.14★)
2022-03
⭐
Rating ↓ 3.50 → 3.14 (dropped 0.36★)
2022-01
⭐
Rating ↓ 4.00 → 3.50 (dropped 0.50★)
2021-12
⭐
Rating ↓ 4.50 → 4.00 (dropped 0.50★)
2019-10
⭐
Rating ↓ 5.00 → 4.50 (dropped 0.50★)
2019-09
🚀
First tracked snapshot — initial data captured
🔔
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📝 Description
95
BU Score · Transcendent
More by 群群 刘
View all →📦 Portfolio summaryINDIE studio
3apps·$17K/mocombined
⚠ Concentrated — top app contributes 97% of combined revenue (single-app dependency)
Similar apps in Business
About this analysis
Why low confidence: only 9 ratings · no founder-verified revenue (model estimate only) · revenue figure is directional only.
📌 Final verdict — read this before you trust the numbers above
EML Viewer Pro is a early-stage iOS app in the business space with weak public traction — only 9 ratings, no founder-verified MRR, and not ranked in any monitored grossing chart. The app appears to be monetised, but public signals are too sparse for a precise revenue estimate.
Bottom line: treat all revenue, audience and acquisition-value numbers on this page as directional only — not founder-verified facts.
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does EML Viewer Pro make per month?▴
Low-confidence model estimate. EML Viewer Pro has only 9 App Store ratings, so our revenue model has very little signal to work with — treat the ~$459/mo figure as directional only, not a verified MRR. No founder-verified revenue data is available for this app. See methodology for the formula and confidence bands.
What apps are like EML Viewer Pro?▴
Browse the full Business category catalog to find similar apps with revenue, build cost, audience and tech stack data. Each /p/{slug} page also shows a Compare side-by-side widget with three peer apps from the same niche.
Who makes EML Viewer Pro?▴
EML Viewer Pro is published by 群群 刘 on the Apple App Store. See the full publisher portfolio (other apps by the same developer) via the More by developer block on the product page above.
What is EML Viewer Pro's BU Score?▴
EML Viewer Pro has a BU Score of 39/100 (Emerging). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.