15 Professional Calculators
Stairs, rafters, roofs, concrete, framing, drywall, tile, paint, masonry, deck, and more — all in one app. Every result in standard US fractional inches.
Now Available on Google Play
Professional Calculators
Built for the Jobsite.
PrecisionFrame Pro gives carpenters and contractors 15 precision calculators, AI-powered SmartScan measurement reading, and lifetime Pro access for less than the cost of a tape measure.
15+
Calculators
$7.99
Lifetime Pro
3
Languages
Everything You Need on the Jobsite
Built by builders, for builders. No subscription. No internet required.
SmartScan — AI Measurement Reader
Point your camera at any handwritten field sketch or measurement label. SmartScan reads the numbers and auto-fills your calculator inputs. One free scan per day. Unlimited with Pro.
Lifetime Pro — Pay Once, Own It
No monthly fees. No subscriptions. Pay $7.99 once and unlock all calculators, unlimited SmartScans, PDF export, and ad-free experience forever.
Works 100% Offline
All calculators run on-device with no internet connection required. Perfect for basements, rural job sites, and areas with poor signal.
15 Calculators. Every Measurement Covered.
Tap any calculator to see what it computes.
Stair Calculator
Rise, run, step count, and stringer length in fractional inches.
Rafter Calculator
Common, hip, and jack rafter lengths for any pitch.
Roof Area Calculator
Total roof area, ridge length, rafter count, and shingle estimate.
Hip & Valley Rafter
Hip and valley rafter lengths for complex roof geometry.
Pitch Converter
Convert roof pitch to degrees and back instantly.
Wall Framing Calculator
Stud count, header size, and lumber estimate for any wall.
Concrete Volume Calculator
Slabs, footings, and tube forms — bags and cubic yards.
Post Hole Calculator
Concrete bag count for any diameter and depth post hole.
Deck Calculator
Joist spacing, decking boards, and beam sizing.
Board Foot Calculator
Lumber volume in board feet for any dimension.
Drywall Calculator
Sheet count and waste factor for any room.
Tile & Floor Calculator
Tile count, grout, and waste estimate for any surface.
Block & Masonry Calculator
Concrete block count for walls and structures.
Paint Coverage Calculator
Gallons needed by room area or surface dimensions.
SmartScan (AI)
AICamera-based measurement reader powered by on-device AI.
Exclusive Feature
SmartScan — Let the Camera Do the Math
On a busy job site, typing measurements wastes time and causes errors. SmartScan uses on-device AI to read handwritten notes, measurement stickers, lumber tags, and field sketches — then automatically populates your calculator inputs. No cloud processing. No data leaves your phone.
- Reads handwritten measurements and printed labels
- Runs entirely on-device — no internet, no data sharing
- Free: 1 scan/day · Pro: unlimited scans
SmartScan screenshot
See It In Action
Real screenshots from the app — built for the jobsite.
Effortless Stair Plans
Simple Pricing. No Surprises.
Start free today. Upgrade once and own it for life.
Free
$0/ forever
- Stair Calculator
- Rafter Calculator
- Roof Area Calculator
- 1 SmartScan per day
- Calculation history (last 10)
- 12 additional calculators
- Unlimited SmartScan
- PDF export
- Ad-free experience
Most Popular
Pro
$7.99
one-time · lifetime access
No subscription · No renewals · Own it forever
- Everything in Free
- All 15 calculators unlocked
- Unlimited SmartScan (AI measurement reading)
- PDF export with branding
- Ad-free experience
- Lifetime access — buy once, keep forever
- Future calculator updates included
Purchases managed securely by Google Play. Restore anytime.
Frequently Asked Questions
Yes. The free version includes the Stair Calculator, Rafter Calculator, Roof Area Calculator, and 1 SmartScan per day — all at no cost. The Pro upgrade unlocks all 15 calculators and removes all restrictions.
Pro unlocks all 15 calculators, unlimited SmartScan AI measurement reading, PDF export of your calculation results, and an ad-free experience — all for a single one-time payment. No subscription, no renewals.
Completely. All calculators and SmartScan run on-device. You can use PrecisionFrame Pro in basements, rural job sites, or anywhere with no cell signal.
All calculations are displayed in standard US fractional inches (e.g., 7 3/16″) as used in professional US construction. You can toggle between imperial and metric modes in the settings.
SmartScan uses Google’s ML Kit on-device text recognition to read measurements from your camera or saved photos. Point it at a handwritten note, a lumber tag, or a field sketch — it extracts the numbers and fills in your calculator automatically. No photo is ever sent to a server.
Yes. Open the app, go to the navigation drawer, and tap ‘Restore Purchases.’ Your Pro status is tied to your Google Play account and restores instantly.
All calculation data is stored locally on your device. PrecisionFrame Pro uses Firebase Analytics and Crashlytics for anonymous crash reporting and usage statistics. No personal information is collected or sold.
PrecisionFrame Pro requires Android 8.0 (API level 26) or higher.
We're Here to Help
Questions, bug reports, or feature requests — reach us directly.