10BII Calc HD
77
Quality Score
Strong
✍️ Bumetric analysis
“
10BII Calc HD is an iOS app from Ernest Brock in the Finance category, currently rated 4.9★ across 3,673 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Quality Score is 77: Strong (healthy traction). For a Finance app, that means healthy traction. 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
$9.5K
per month
→
12-mo forecast
$9.8K – $20.5K
per month
→
24-mo forecast
$12.1K – $36.4K
per month
MID 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
329 snapshots on record
Rating
4.9
Reviews
3,673 reviews
Forecast Revenue / mo
$9.5K
Snapshots tracked
329
since Oct 2021
ONE-TIME · BUILD
💰 Estimated build cost
$175K
↳ What it cost to build · not monthly revenue
Likely range $130K – $235K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Pays back in ~1.5y at current MRR
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 |
| ⚙ Finance complexity ×1.60 | +$30K |
| ⚙ 16.0y maintenance × ~1-person team | +$96K |
Total estimate
$175K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$225K
↳ What it would sell for · not monthly revenue
Marketplace range $175K – $300K · 24× MRR multiple
💸
~1.3× build cost (break-even+)
Synthetic estimate. Multiple band derived from ad-supported + age, rating quality, category demand, and user-base maturity. Calibrated against 2024-2026 indie-app-marketplace closed-deal medians. Full math + comparable deal list on /methodology.
How the multiple was built
| 📺 Ad-supported base | 15× MRR |
| 📅 16.0y proven track record | +20% |
| ⭐ ★ rating ≥ 4.7 (premium) | +15% |
| 🏷 Finance category multiple | +15% |
Final multiple
24× MRR
👥 Estimated audience size
150K
Lifetime downloads (US-equivalent)
Monthly active
8.4K
Daily active
3.3K
Synthetic estimate from ratings × category benchmarks. Calibrated against 2024-2026 mobile-attribution retention + DAU/MAU reports. Numbers are US-storefront-equivalent — true global audience can be 5-10× larger for international apps. Full math + source list on /methodology.
How we sized it
| 📲 Finance engagement | ~60 installs / rating |
| 📅 16.0y of rating accumulation | -30% |
| 🔁 Finance D30 retention | 28% |
| 📍 DAU / MAU stickiness | 0.40 |
DAU / MAU
39% sticky
🛠 Estimated tech stack
🍎
Native iOS (Swift / UIKit)
High confidence · 80%
Also possible
Native iOS (SwiftUI)
Heuristic guess from app bundle size, category, store description signals, and release-date stack era. Bumetric does not disassemble binaries — for binary-level certainty you would need an SDK intelligence tool or the manifest itself. Reasoning chain on the right. Full ruleset on /methodology.
Signals we read
| 📦 App bundle size | 4 MB |
| 🏷 Category context | Finance |
| 📦 Compact iOS bundle | → Native Swift / UIKit (pre-2020 era) |
💀 Maintenance status
At risk
50%
Last shipped 2025-11-19 · 309 days ago
0 · Active
50 · At risk
100 · Abandoned
Heuristic risk score from time-since-last-update + ratings velocity proxy + Editor's Choice / curated featuring signals. Calibrated against 2024-2025 app-store ranking decay reports. Not a guarantee — a quiet app with a healthy codebase looks the same as an abandoned one until something breaks. Full math on /methodology.
Risk signals
| 📅 10 months since last update | Concerning gap |
Verdict
At risk
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$9.5K/mo · ML-estimated from 234 triggers
Growth rate
+4.0% MoM · MID tier baseline (compound monthly)
6 months
$9.0K – $15.0K
12 months
$9.8K – $20.5K
24 months
$12.1K – $36.4K
Compound growth at +4.0% MoM (tier baseline for MID). Range widens with horizon — typical noise band ±25% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.
📊
BU Investment Matrix
Below median · 53/100MID TIERunderperforming peersGrowth Velocity
5.0
Founder Strength
6.6
Product Quality
8.9
Revenue Strength
4.0
Monetization Maturity
1.0
Defensibility
6.0
Market Position
2.0
Operational Safety
9.0
- 💰 Revenue: Modest — $6K - $14K/mo · MID tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.92★ across 3,673 reviews — strong (top 10%).
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: last update 304d ago — slow cadence.
- ⚠️ Risk: Low — no material risk signals detected.
🎯 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 = $170K-$302K. Portfolio play ($88K/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 10 of 10 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 | |
| Excellent rating (4.9★)METRIC | +$2,200 | |
| worth every pennyREVIEW | +$2,000 | |
| bugsREVIEW | −$1,800 | |
| 5 starREVIEW | +$1,800 | |
| excellent appREVIEW | +$1,500 | |
| Low install base (3,673 ratings)METRIC | +$1,500 | |
| Mature app (16y old)METRIC | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| Single-language (English only)METRIC | −$400 |
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 · v3.8
• Restored memory save between uses
• More iOS26 fixes
• More iOS26 fixes
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- 10BII Calc HD
- Developer
- Ernest Brock
- Bundle ID
- com.ErnestBrock.Calc10BIIHD
- App Store URL
- Open in App Store
- Category
- Finance
- 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
- Reported revenue signal / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- Model estimate / mo
- $9.5K/mo
- Top-grossing rank
- Outside top 100 in US Finance
- 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.
📈Ratings growth3,746 ratings+740% lifetimeShow 3-year history estimate ▾
Tracked (60 weeks) Pre-tracking estimate (0 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 → $8.99 (+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
10BII Calc HD is a business calculator featuring over 100 built-in functions for business, finance, mathematics and statistics. Easily calculate loan payments, interest rates, amortization, discounted cash-flow analyses, TVM (loans, savings, and leasing), bonds and depreciation using a simplified algebraic entry system. The keyboard and display have been carefully optimized for the iPhone, iPod Touch and iPad. Two keyboard layouts and multiple specialized worksheets allow you to do much more than a 10BII calculator while maintaining compatibility with the standard.
HD version includes:… View full description on the official store →
HD version includes:… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 4 MB🔞 4+📱 iOS 17.6+🔖 v3.8🔄 updated 10mo ago🌐 EN📂 Finance💰 Paid🚀 Launched 2010 (16y old)
📅
What Worked™ · Development Pipeline
11 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
📈
Crossed 1,000 ratings — social-proof flywheel kicking in
→ 30 days after: reviews +30 high confidence
2026-05
💲
Went paid — introduced $8.99 price point
→ 30 days after: reviews +30 high confidence
2026-03
📈
Crossed 500 ratings — social-proof flywheel kicking in
→ 30 days after: revenue −$201K/mo · rating −0.05★ · reviews −3,121 medium · co-occurring
2026-03
📈
Crossed 500 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$385/mo · reviews +6 medium · co-occurring
2024-09
📈
Crossed 100 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$64/mo high confidence
2024-09
📈
Crossed 100 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$192/mo high confidence
2022-03
📈
Crossed 50 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$192/mo high confidence
2022-03
📈
Crossed 50 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$388/mo · reviews +6 high confidence
2021-10
🚀
First tracked snapshot — initial data captured
→ 30 days after: revenue +$451/mo · reviews +7 high confidence
2021-10
📈
Crossed 10 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$451/mo · reviews +7 medium · co-occurring
2021-10
🚀
First tracked snapshot — initial data captured
→ 30 days after: revenue +$451/mo · reviews +7 medium · co-occurring
🌍
Multi-Country Performance
Available in 7 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 4.95238★ | 105 | 4.95238★ this version |
| 🇧🇷 BR | 4.75861★ | 29 | 4.75861★ this version |
| 🇨🇦 CA | 4.86601★ | 306 | 4.86601★ this version |
| 🇬🇧 GB | 4.85185★ | 27 | 4.85185★ this version |
| 🇮🇳 IN | 5★ | 1 | 5★ this version |
| 🇯🇵 JP | 4.84211★ | 38 | 4.84211★ this version |
| 🇺🇸 US | 4.9172★ | 3,756 | 4.9172★ this version |
🔔
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for 10BII Calc HD: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
More by Ernest Brock
View all →📦 Portfolio summaryINDIE studio
4apps·$29K/mocombined
✓ Diversified — top app contributes 41%; risk spread across portfolio
About this analysis
Why medium confidence: 3,673 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
10 answers · auto-generated from this app's public dataHow much does 10BII Calc HD make per month?▴
Based on our ML-calibrated revenue forecast, 10BII Calc HD earns approximately $9.5K/mo. This is a US-storefront-equivalent estimate; global revenue can be several times larger for internationally-distributed apps. See the methodology page for the full formula and confidence bands.
Is 10BII Calc HD profitable?▴
With estimated build cost $175K and monthly revenue $9.5K, 10BII Calc HD looks break-even-grade — payback period sits around 1.5 years. Profitability also depends on paid-acquisition spend and refund rate which the public model doesn't see.
How many users does 10BII Calc HD have?▴
Estimated audience: ~150K lifetime downloads, ~8K monthly active users, and ~3K daily active users. Derived from ratings count × category installs-per-rating × age decay. US-storefront-equivalent — global audience can be 5-10× larger for internationally-distributed apps.
What apps are like 10BII Calc HD?▴
Browse the full Finance 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.
What is 10BII Calc HD built with?▴
Our heuristic places 10BII Calc HD on the Native iOS (Swift / UIKit) stack (High confidence, 80%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: Native iOS (SwiftUI).
Is 10BII Calc HD still actively maintained?▴
Maintenance status: At risk (50% abandonment risk). Last shipped version was 10 months ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
How much would 10BII Calc HD sell for?▴
Estimated acquisition value: $225K (marketplace range $175K – $300K). Calculated as 24× monthly revenue using the standard multiple for the detected monetization model + adjustments for age, rating quality and category demand. Calibrated against 2024-2026 Flippa / Acquire.com / MicroAcquire closed-deal medians.
When was 10BII Calc HD last updated?▴
10BII Calc HD last shipped a new version on 2025-11-19 — 10 months ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes 10BII Calc HD?▴
10BII Calc HD is published by Ernest Brock 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 10BII Calc HD's BU Score?▴
10BII Calc HD has a BU Score of 77/100 (Strong). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.