SiteCalc
SiteCalc: Builder's Calculator
Concrete, paint, tile, mulch, and gravel estimates for DIY builders and small contractors.
com.calcmason.sitecalc
CalcMason Labs
Offline calculator apps for real work.
CalcMason builds focused Android calculators for tradespeople, makers, pilots, mariners, divers, and radio operators. The apps are designed to work offline, show the math, and avoid account lock-in.
Apps
SiteCalc
SiteCalc: Electrician Calc
Voltage drop, wire sizing, conduit fill, box fill, and electrical jobsite calculations.
com.calcmason.sitecalc.electrician
SiteCalc
SiteCalc: Woodworking Calc
Board feet, fractions, miter angles, wood movement, epoxy volume, and shop estimates.
com.calcmason.sitecalc.woodwork
SiteCalc
SiteCalc: Fence & Deck Calc
Deck boards, fence materials, post concrete, balusters, stairs, and project lists.
com.calcmason.sitecalc.fencedeck
SiteCalc
SiteCalc: Plumber's Calc
Pipe offsets, rolling offsets, drain slope, pipe volume, flow, and plumbing conversions.
com.calcmason.sitecalc.plumber
SkyCalc
SkyCalc: E6B Flight Computer
Offline aviation calculators for wind, density altitude, TAS, fuel, practice, and W&B.
com.calcmason.skycalc.e6b
SiteCalc
SiteCalc: HVAC Duct Calc
Duct sizing, airflow, sensible heat, superheat, subcooling, and PT reference tools.
com.calcmason.sitecalc.hvac
SeaCalc
SeaCalc: Marine Nav Calc
Great-circle and rhumb-line distance, ETA, fuel range, hull speed, and dead reckoning.
com.calcmason.seacalc.nav
ShopCalc
ShopCalc: Machinist Calc
Speeds, feeds, tap drills, bolt circles, trig, drill depth, MRR, and shop conversions.
com.calcmason.shopcalc.machinist
SiteCalc
SiteCalc: Welding Calc
Heat input, fillet welds, carbon equivalent, filler weight, shielding gas, and weld math.
com.calcmason.sitecalc.welding
SeaCalc
SeaCalc: Dive Gas Calc
Gas arithmetic for trained divers: SAC/RMV, MOD, best mix, EAD, ppO2, and reserves.
com.calcmason.seacalc.divegas
SkyCalc
SkyCalc: Ham Radio Calc
Antenna length, SWR, coax loss, dB math, Ohm's law, grid squares, and radio references.
com.calcmason.skycalc.hamradio
Privacy First By Design
Core calculators run offline. App-owned code does not create accounts or run a developer backend. Ads, consent, and purchases use Google SDKs and are disclosed in each app-specific privacy policy.
Publication Links
Use https://calcmason.com as the Google Play developer website for each app.
Each app has a dedicated privacy URL under /privacy/appN.html.