Tools that do the math so you can do the job.
Offline apps for electricians, pipefitters, welders, riggers and pilots. No accounts. Type the numbers, get the answer.
Built for the trades
Every one of these started with a job-site problem: a chart in a binder, a formula on a scrap of paper, a calculator that rounds wrong.
Everything we make
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PipeMaster EMT Pipe Bending Calculator -
DuctCalc Duct Sizing, Friction Rate -
E6B Calc Aviation calculator, crosswind -
FitterMaster Rolling Offsets & Takeouts -
PoolDose Chemical Calculator & Test Log -
RigMaster Sling Tension & Load Weight -
SprayMaster Tank Mix, Calibration & Rates -
WeldMaster MIG TIG Stick Flux Settings -
Binoculars Super Zoom Lens & Magnifier -
Passport Photo AI Visa, DV Lottery & ID Maker -
Boxing Timer Rounds, HIIT & Live Activity -
Chess Clock Blitz, Bullet & Tournament -
Cigarette & Vape Counter Count, spend, time between -
CollageCraft Photo Editor, Carousel & Story -
Countdown Birthday, Wedding & Reminders -
Dart Scoreboard Dart Counter, Stats, Checkout -
Decibel Sound Meter Noise Level & Loudness Test -
Device Monitor Sensor Tests & Health Check -
Don't Touch Motion Alarm & Intruder Photo -
FareMeter Taximeter, Earnings & Receipts -
FieldGrid UTM Grid, Compass & Land Nav -
Fit as Log Walks, Runs & Hikes -
GeoProof Geotag Field Photo & Timestamp -
GhostScope Paranormal Hunter Kit & EVP -
iSpeaker Cleaner Speaker Cleaning & Water Eject -
LandMeasure Acreage, Distance & Perimeter -
LED Banner Scrolling Marquee & Sign Board -
LiDAR Camera Night Vision, Patrol & Astro -
StoreCard Your Loyalty Cards in One App -
MyMP3 Converter Extract, Edit & Make Ringtones -
Periphery BLE Inspector & Device Finder -
Poker Timer Tournament & Home Game -
PokeT-Walk Add Steps to Health Manually -
Pomodoro Timer Work Session & Task Tracker -
Printer App Scan, OCR & Print Anything -
PrivacyScan WiFi, BLE & Hidden Camera Scan -
Random List, Coin, Card, Color Random -
RCON SSH, FTP & Game Server Manager -
Ring Sizer Measure Finger & Size Chart -
RV Level Wedge Height, Slope & Hitch -
Spirit Box Ghost Detector & Hunting Tools -
Step As Pedometer & Step Tracker -
Tally Counter Clicker, tasbeeh, row counter -
Text Reader Narrator Read PDF & Text Aloud -
TTS Text to Speech & PDF Scanner -
URL Short QR Maker & Click Analytics -
Watch Faces Custom Faces, Video & Widgets -
WiFi QR Scan & Share WiFi Password
Also on Android
The same studio on Google Play, under the name MasaApps360.
Four rules every app follows
Offline first
A basement, a crawlspace and a cockpit have one thing in common: no signal. Every calculator runs on the device.
No account, ever
You do not sign up to use a calculator. Nothing to log into, nothing left behind.
Exact math
Fractions stay fractions. No rounding to decimals behind your back and a mark that is an eighth off.
Pay once, if at all
Most apps are free with an optional Pro unlock. What you get for it is on each app page, before you pay.