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Incredible
Incredible app — pipefitter, welder, boilermaker… honestly it's great, exactly the kind of app I was looking for. It would be even better with a section where everyone can contribute, because our trade is vast.
Mobile app · iOS & Android
WeldUp Pocket.
41 metalwork calculations,
no network needed.
Offset, flat pattern, welder settings, ISO drawing: the right number, on site, the second you need it. For pipefitters, welders and boilermakers. Free, no account, no ads, and no data ever leaves the phone.
41metalwork calculation tools
0 networkeverything works offline
0 accountno ads, no data sent
6 languagesFR · EN · ES · DE · IT · PL
01 — The tools
Three trades,
one app.
Everything a pipefitter, a welder and a boilermaker has always worked out in their head or on a scrap of cardboard: one entry, one result. Nothing to search for, nothing to wait for.
01
Pipefitter
- Offset — any angle, centre distance and pipe length to cut
- Pipe bending and branch on pipe (fish-mouth template at 1:1 scale)
- ISO drawing traced then dimensioned, PDF export with bill of materials
- Simple elbow, short offset, parallel runs and flag
- Custom elbow and reducer, fittings library
- Hydrostatic test, line weight, full-screen level
02
Welder
- Amperage setting: a 10 A window and the pass plan
- Welding shrinkage and distortion, gap to allow beforehand
- Gas selection (ISO 14175), flow and purge, argon or nitrogen
- Intermittent weld spacing
- Metallurgical compatibility
- TIG and MIG torch components, part by part
03
Boilermaker
- Flat pattern for bends, cones and shells, fold by fold
- Crimping, generatrices, trigonometry
- Neutral axis, joint gaps, check circumference
- Drilling and tapping: speed, feed, pilot hole
- Section weight: tube, angle, flat, round, IPE / HEA / UPN
- Material specification and traceability (camera reads the marking)
Shared library: flange gasket and bolting (EN 1092-1, ASME B16.5), grades, welding and piping symbols, polarity, dimensions, unit converter. Values are indicative: they replace neither the applicable codes nor a qualified WPS, and every result shows where its number comes from.
02 — Inside the app
Every tool
opens on its drawing.
03 — On site
Designed for
a gloved hand.
Open a job: everything you calculate afterwards is attached to it. The history keeps seven days, one line reopens the tool with the values already entered, and a whole job is sent in a single message.
01Gloved keypadBig keys, decimal point and fraction bar. A dimension is typed “3 1/2” as it reads on the drawing.
02Light or darkReadable in full sun, easy on the eyes in the workshop.
03Metric or imperialInches to the sixteenth, units converted everywhere.
04Share in one tapSMS, email or messaging: the job leaves with its calculations.
04 — Reviews
Built by a pro,
rated by pros.
Reviews published on the App Store and Google Play. The app evolves with community feedback: every suggestion gets an answer.
You simply can't do better
Shame you can't give more than 5 stars, you simply can't do better: beautiful interface, easy to understand, and all of it free. You can tell it was made by pros, for pros.
The best tool
Great app that really brings together all the tools you need. The developer listens to suggestions for future improvements, which is great.
Super handy!
A super handy app for everyday work! I strongly recommend it to anyone working in metalwork and welding!
Complete and intuitive
Very good tool, complete and intuitive.
Well thought out, truly ergonomic
I find the app really well thought out and truly ergonomic. It would be interesting to add an option to calculate purging from outside diameters (48, 114, 139…) rather than nominal designations, for those doing custom work.
Average rating: 5.0 on the App Store (33 ratings), 4.7 on Google Play (10 reviews).
05 — Version 0.4
What just landed.
- Seven more tools: simple elbow, short offset, parallel runs & flag, generatrices, intermittent weld spacing, crimping, trigonometry.
- The ISO drawing becomes a real shop drawing: true angles from 5 to 90°, roll to the degree, tees and branches drawn, PDF with bill of materials and weights.
- Every tool opens on its dimensioned principle drawing. The double offset moves to true 3D.
- Purge through plugs, argon or nitrogen. Root face and V angle in the amperage setting. Section weight extended to IPE, IPN, HEA, HEB and UPN beams.
iPhone and iPad (iOS 15.5 or later), Apple Silicon Mac, Android. 65 MB. Free. French, English, Spanish, German, Italian, Polish.
Follow the app
Behind the scenes,
tips, updates.
An idea for a tool, a tricky case on site? Write to l.robin@weldup.pro or message us on TikTok: the app is partly built on user feedback.
Free
Download
WeldUp Pocket.
On iPhone, iPad and Android. No account, no ads, no network.
App Store 5.0 · Google Play 4.7