Draw a piping isometric on your iPad — in the mechanical room, on the roof, on site — and turn it into the numbers the job runs on.
Built for the trades — not a scaled-down CAD suite, and not a sketch app in a construction skin. It understands pipe, so it does the work a seasoned fitter or estimator does by habit.
SMART FROM THE FIRST LINE
Choose your system — HVAC (Refrigeration or Boiler), Plumbing, or Electrical — and the app sets your materials, line services, pipe sizes and joint types automatically. Industrial steam gets A106 carbon steel. A refrigeration line at -40°F gets A333 low-temp steel, because ordinary carbon steel goes brittle in cold service. Wall schedule follows size, service and design pressure.
FITTINGS DRAW THEMSELVES
There is no fitting tool, because there doesn't need to be one. Turn a corner and you get a 90 or a 45. Branch off a main and a tee appears, sized as a reducing tee if the branch is smaller. Long runs get couplings, open ends get caps. All drawn as true ISO symbols, with joint marks that match the material.
BUILT FOR REAL MEASUREMENTS
Type dimensions the way you write them — 8' 6-3/4", 8-6, 102-1/2", 2.6m — to a sixteenth, in imperial or metric. Retype any pipe's length and it resizes in place: the open end moves and the elbow or tee stays anchored.
A COMPLETE DRAWING
• 14 valve types in true ISO symbols — gate, globe, ball, plug, butterfly, needle, diaphragm, angle, check, stop-check, relief, solenoid, regulator, c**k
• Rotate, flip and mirror valves, equipment and annotation
• Wall, floor, ceiling, roof and grade lines, with sleeve symbols placed automatically where pipe passes through
• Pipe crossings with over/under breaks, the way an iso is meant to read
• Text notes, flow arrows, and a dimension tool you can override with a field-verified measurement
• Plain lines and shapes — boxes, circles, triangles and more — for markup that's never counted
• A north/east axis indicator that stays put while you pan and zoom
FREE
The full drawing toolset, every system and line service, automatic fittings, the complete valve library, annotation and dimensioning, exact length entry, and up to 2 saved projects. No time limit. No watermark.
PRO — ONE-TIME PURCHASE, NO SUBSCRIPTION
Everything that turns a drawing into a deliverable:
• TAKEOFF & CUT LENGTHS — pipe footage by size and service, fitting and valve counts, and the cut length of every run: centre-to-centre minus fitting take-outs. The number that goes on the saw.
• EQUIPMENT LIBRARY — compressors, condensers, evaporators, receivers, accumulators, boilers, heat exchangers, steam traps, water heaters, pumps, backflow preventers, water and gas meters, panels and disconnects.
• ESTIMATOR — labor priced by the actual joining method, because a socket weld isn't a butt weld and neither is a solder joint. Each has its own editable rate. Add material prices and your markup for a grand total.
• PDF EXPORT — print, email or file the finished drawing.
• DRAWING SHEET & TITLE BLOCK — compose the iso on a bordered ANSI sheet with your company, client, project, scale and drawing number.
• UNLIMITED SAVED PROJECTS
WHO IT'S FOR
Service technicians, pipefitters, fabricators, estimators, foremen, plumbers, electricians, and the small contractors who draw, price and run the job themselves.
WORKS WHERE YOU WORK
Your drawing saves itself as you work, and a guided tour shows new users every tool. No account. No sign-in. No internet connection required. Nothing is uploaded and nothing is collected — your drawings stay on your iPad. It works in a basement with no signal exactly as well as it works at the desk.
LionSync-ISO is a field and estimating tool, not engineering design software. Its material and schedule rules are widely used defaults, not a substitute for your project specification, the engineer of record, or governing codes.
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