Every discipline, one workspace
Electrical, mechanical, civil, fluid and thermal, materials, structural, plumbing, safety, surveying and GIS, energy and conversions.

105 calculators, estimators, converters and references across 11 disciplines. Every calculation runs on the device, and the app does not even request internet access.


Electrical, mechanical, civil, fluid and thermal, materials, structural, plumbing, safety, surveying and GIS, energy and conversions.

Enter the values you have, read the result, then save, copy, share or print it.

Saved calculations stay on the device. Export a JSON backup to move them between devices you control.

Search the full catalog, browse by discipline, pin favourites and jump back into recent tools when a job is already underway.

Material estimators for drywall, paint, lumber, masonry and more — from stair stringers to cut-and-fill volumes.

Voltage drop, conduit fill, box fill, service and panel load, wire resistance and lighting lumens.
Gear ratios, shaft sizing, pulley speed, spring rate, board feet, compound miters and CMU grout volume.
Slope and grade, cut and fill, stair stringers and fall clearance.
Touch, keyboard and D-pad focus keep every numeric control reachable on a TV.




13 screenshots from the Google Play listing — phone, tablet and TV.













A preliminary engineering aid. Always verify results against current codes, manufacturer data and a licensed professional.