22
BU Score
Niche
Architect's Formulator
✍️ BU Analytics Review
“
Architect's Formulator is an iOS app from Historycentral.com in the Business category, currently rated 2.0★ across 2 ratings. Initial signal reads as mixed reviews — supporters praise core features while critics cite stability/value gaps.
Our BU Score puts it at 22 — Niche (micro-niche or pre-traction stage). For a Business app, that means micro-niche or pre-traction stage.
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 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 (2.0★)METRIC | −$1,500 | |
| Mature app (17y old)METRIC | +$1,500 | |
| Single-language (English only)METRIC | −$400 | |
| Pre-traction phase (2 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 →💾 36 MB🔞 4+📱 iOS 18.6+🔖 v5.02🔄 updated 1mo ago🌐 EN📂 Business💰 Paid🚀 Launched 2009 (17y old)
📝 About this app
ARCHITECT'S FORMULATOR is the ultimate professional calculator for architects,
engineers, and construction professionals — with over 2,000 formulas in a
single app.
Whether you're sizing beams, designing HVAC systems, calculating voltage
drops, or checking ADA compliance, Architect's Formulator covers every
discipline — structural, electrical, mechanical, plumbing, and carpentry —
plus unit conversions, reference tables, and ADA accessibility resources.
ARCHITECTURE & STRUCTURAL — 29 categories covering beam loads across single
through four continuous spans, concrete design, flat plate analysis, steel
design, masonry, environmental loads (wind, snow, seismic), foundation and
retaining walls, wood design, acoustic absorption, 100+ material weights, fire
egress, roof drainage, solar/daylighting, thermal performance, site grading,
cost estimating, and more.
ELECTRICAL — 15 categories for AC/DC circuits, Ohm's Law, motors,
transformers, voltage drop, wiring/conduit sizing, batteries, impedance, power
demand, lighting design, UPS sizing, and operating costs.
CARPENTRY — 8 categories for lumber, stairs, safe beam loads, wall loads,
roofing (shed, gable, hip), railing/deck framing, crown molding, and materials
estimation for drywall, concrete, paint, and plywood.
PLUMBING & HVAC — 29 categories covering pipe sizing, water flow, pumps,
boilers, and a comprehensive HVAC library including airside/waterside heat
transfer, duct sizing, fan and pump laws, gas laws, psychrometrics,
refrigeration, heating/cooling load design, energy content for 16 fuel types,
ventilation rates per ASHRAE 62.1, and steam/hydronic systems.
CONVERSIONS — 17 categories with 500+ conversions for pressures, flows, BTU,
horsepower, watts, frequency, linear/liquid/square/cubic measures, weights,
and a Metric library with 280+ conversions across length, area, volume, mass,
energy, power, and more.
TEMPERATURE SCALES — Convert between all 8 scales: Celsius, Fahrenheit,
Kelvin, Rankine, Réaumur, Newton, Delisle, and Rømer.
REFERENCE TABLES — IBC Occupancy Loads, Brick Sizes, Lumber Dimensions, AWG
Wire Gauge, Concrete Mix Ratios, and Insulation R-Values.
ADA REFERENCE — 50 illustrated diagrams for wheelchair clearances, ramps, grab
bars, elevators, accessible parking, and restroom layouts, plus 17 PDF
documents with full ADA guidelines.
FEATURES:
• Over 2,000 professional formulas
• US and Metric units with one-tap switching
• Save and export calculations
• Favorite your most-used calculators
• One-time premium upgrade — no subscriptions
From foundation to finish, every formula for every phase of the job.
engineers, and construction professionals — with over 2,000 formulas in a
single app.
Whether you're sizing beams, designing HVAC systems, calculating voltage
drops, or checking ADA compliance, Architect's Formulator covers every
discipline — structural, electrical, mechanical, plumbing, and carpentry —
plus unit conversions, reference tables, and ADA accessibility resources.
ARCHITECTURE & STRUCTURAL — 29 categories covering beam loads across single
through four continuous spans, concrete design, flat plate analysis, steel
design, masonry, environmental loads (wind, snow, seismic), foundation and
retaining walls, wood design, acoustic absorption, 100+ material weights, fire
egress, roof drainage, solar/daylighting, thermal performance, site grading,
cost estimating, and more.
ELECTRICAL — 15 categories for AC/DC circuits, Ohm's Law, motors,
transformers, voltage drop, wiring/conduit sizing, batteries, impedance, power
demand, lighting design, UPS sizing, and operating costs.
CARPENTRY — 8 categories for lumber, stairs, safe beam loads, wall loads,
roofing (shed, gable, hip), railing/deck framing, crown molding, and materials
estimation for drywall, concrete, paint, and plywood.
PLUMBING & HVAC — 29 categories covering pipe sizing, water flow, pumps,
boilers, and a comprehensive HVAC library including airside/waterside heat
transfer, duct sizing, fan and pump laws, gas laws, psychrometrics,
refrigeration, heating/cooling load design, energy content for 16 fuel types,
ventilation rates per ASHRAE 62.1, and steam/hydronic systems.
CONVERSIONS — 17 categories with 500+ conversions for pressures, flows, BTU,
horsepower, watts, frequency, linear/liquid/square/cubic measures, weights,
and a Metric library with 280+ conversions across length, area, volume, mass,
energy, power, and more.
TEMPERATURE SCALES — Convert between all 8 scales: Celsius, Fahrenheit,
Kelvin, Rankine, Réaumur, Newton, Delisle, and Rømer.
REFERENCE TABLES — IBC Occupancy Loads, Brick Sizes, Lumber Dimensions, AWG
Wire Gauge, Concrete Mix Ratios, and Insulation R-Values.
ADA REFERENCE — 50 illustrated diagrams for wheelchair clearances, ramps, grab
bars, elevators, accessible parking, and restroom layouts, plus 17 PDF
documents with full ADA guidelines.
FEATURES:
• Over 2,000 professional formulas
• US and Metric units with one-tap switching
• Save and export calculations
• Favorite your most-used calculators
• One-time premium upgrade — no subscriptions
From foundation to finish, every formula for every phase of the job.
🆕 What's New · v5.02
Minor bug fixes
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Architect's Formulator
- Developer
- Historycentral.com
- Bundle ID
- net.multieducator.Architecture
- App Store URL
- Open in App Store
- Category
- Business
- Content rating
- 4+
- Languages
- EN
Company
- Website
- www.historycentral.com
- Tagline
- The Best Source of American and World History
- Description
- American and World History all in one place.All of Americas Wars, different periods in American history. Special sections on elections, civics, the Navy, railroads, aviation. Everything you want to know about history
- 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
- $144/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
- https://www.historycentral.com/News.html
- Press / News
- Not found
Contacts & Socials
- Socials
- youtube
- Not found
- Phone
- 1400-1899 20
- Contact page
- https://www.historycentral.com/Contact.html
- About page
- https://www.historycentral.com/About.html
📈Ratings growth2 ratings+100% lifetimeShow 3-year history estimate ▾
Tracked (8 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.
