56
BU Score
Solid
Calc-12E
✍️ bumetric analysis
“
Calc-12E is an iOS app from Stone Meadow Development LLC in the Business category, currently rated 4.0★ across 20 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
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 | |
| 5 starREVIEW | +$1,800 | |
| Mature app (17y old)METRIC | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| slowREVIEW | −$1,200 | |
| Pre-traction phase (20 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.
App Specs
🔐 Own this app? Claim & verify MRR →💾 20 MB🔞 4+📱 iOS 8.0+🔖 v4.2.3🔄 updated 8y ago🌐 EN, DE, PT, ES📂 Business💰 Paid🚀 Launched 2008 (17y old)
📝 About this app
5 Stars. “I can't tell you how often I use it, probably about as much as the phone app!"
- CharlieW, President. Waterman & Company (Real Estate Investment and Development)
“This is the first 12C type calculator for the itouch that has actually made me put down my real 12C. One of the best features of this calculator is the register display where you can see what is in FV, I, PV, PMT, etc. That alone makes it worth the $14.95 price. Consider the many other features that it has over and above the real 12C and you have one sweet program here. Best of the 12C emulators out there - hands down! “… View full description on the official store →
- CharlieW, President. Waterman & Company (Real Estate Investment and Development)
“This is the first 12C type calculator for the itouch that has actually made me put down my real 12C. One of the best features of this calculator is the register display where you can see what is in FV, I, PV, PMT, etc. That alone makes it worth the $14.95 price. Consider the many other features that it has over and above the real 12C and you have one sweet program here. Best of the 12C emulators out there - hands down! “… View full description on the official store →
🆕 What's New · v4.2.3
This update from Apple will improve the functionality of this app. No new features are included.
Bug fix: The keyboard isn't squished anymore when launching in landscape on an iPad
Bug fix: The keyboard isn't squished anymore when launching in landscape on an iPad
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Calc-12E
- Developer
- Stone Meadow Development LLC
- Bundle ID
- com.stonemeadowdevelopment.Calc12E
- App Store URL
- Open in App Store
- Category
- Business
- Content rating
- 4+
- Languages
- EN, DE, PT, ES
Company
- Website
- www.stonemeadowdevelopment.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
- $11.6K/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 Reviews40 latest · avg 4.08★ · 60.0% 5★ · 12.5% 1★
5★24 (60%)
4★6 (15%)
3★4 (10%)
2★1 (2%)
1★5 (12%)
+1 ratings/week
Praise: great ×17 love ×5 best ×5 perfect ×4 fantastic ×3
Top positive
★★★★★ soooo easy....
.....if you are familiar with the HP 12C.…
★★★★★ Finally!
This is the financial calculator that I have been waiting for. As I watched the HP 12C emulators enter the App Store, I kept wondering why none of them took advantage of the iPhone's power and interface. The HP 12C is my favorite calc…
Top negative
★☆☆☆☆ iPad - please move calculator back to the center
Latest update places calculator in lower left hand corner of iPad; not in the center like it's pictured in the app ad. Please move it back to center of screen.…
★☆☆☆☆ Where did my calculator go?
This was one of the first Apps I bought for my iPhone. It was the HP-12C, original classic and although the iPad upgrade wasn't very exciting it worked. The latest update coverts it to a 12E? What is that? I tried switching it back to …
📈Ratings growth20 ratings+1900% lifetimeShow 3-year history estimate ▾
Tracked (39 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 Calc-12E: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
📊
BU Investment Matrix
Avoid · 35/100structurally challengedRevenue Strength
3.2
Product Quality
3.2
Market Position
0.0
Growth Velocity
5.0
Defensibility
4.5
Operational Safety
6.2
Founder Strength
5.1
Monetization Maturity
1.0
- 💰 Revenue: Modest ($1K/mo, trajectory unclear).
- ⭐ Quality: 3.95★ across 20 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 2951d ago — possibly dormant.
- ⚠️ Risk: Moderate — dormant (2951d since update).
🎯 For competitors: Mixed picture. Worth competing if you have a clear UX or pricing edge — otherwise crowded segment.
💵 For acquirers: Estimated asking range 18-32× monthly = $31K-$56K. Portfolio play ($11K/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.
🗣
Voice of Customer
Based on 51 reviews across 5 markets● 80% positive · ● 8% neutral · ● 12% negative · Rating drift: +0.19★ (improving — recent 50: 4.14★ vs lifetime: 3.95★)
Top praise themes
financial calculator ×7 real 12c ×5 cash flow ×5 cash flows ×4 financial calculators ×3 amortization tables ×3 one one ×3 iphone ×14
Top complaint themes
ipad ×3 calculator ×3 center ×3 update ×3 12c ×3 layout ×3 results ×3 interest ×3
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇺🇸 US | 3.95★ | 20 | 3.95★ this version |
| 🇬🇧 GB | 4★ | 4 | 4★ this version |
| 🇩🇪 DE | 3.6★ | 5 | 3.6★ this version |
| 🇫🇷 FR | 4★ | 1 | 4★ this version |
| 🇯🇵 JP | 5★ | 2 | 5★ this version |
| 🇨🇦 CA | 5★ | 2 | 5★ this version |
| 🇦🇺 AU | 4.5★ | 4 | 4.5★ this version |
| 🇧🇷 BR | 3★ | 2 | 3★ this version |
| 🇮🇳 IN | 0★ | 0 | — |