Piping
Isometric plan, Pipe offset, Rolling offset…
The right number for piping, for welding, for machining and on the job
Cut length, full-scale template, flat pattern, starting settings, cutting speed. 51 tools for pipefitters, welders, fabricators and machinists, with no network.
See the 51 tools
7-day free trial · no account · no ads
A product by
The app’s 51 tools
Isometric planPipe offsetRolling offsetParallel pipe offsetBranch on pipeBranch on elbowMitre bendCut-down elbowTee + elbowReducerPipe bendingStandard fittingsFlanges and boltingJacketed pipeLine weightHydrostatic testHeat inputCarbon equivalent and preheatShielding gasBack purgeWelding settingsWeld shrinkageFiller metal weightWeld defect diagnosisISO 5817 criteriaWeld pass layoutDissimilar metal weldingCone and frustumShell courseBend developmentPlate and section weightDrilling and tappingRight triangleMitre cutSquare-to-round transitionHopper (pyramid frustum)Plate end pre-bendingFrame planUnit converterBar cutting planLevel and slopeCutting speed and feedISO 286 fitsThreads and tap drillsTightening torquesBolt circleTapersMeasuring over pinsHardness conversionTurning surface finishMachining time
A calculation in
3 steps
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01
Pick the tool
From home, search or the trade tab: two taps at most.
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02
Enter the sizes
Glove keypad, common values in one tap, or tap a dimension on the drawing.
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03
Read, export
Large result, worked calculation and sources. PDF of the calculation or full-scale template on A4.
Preview
Screenshots of the web build of the app in development, with demo data.
Features
Welding
Heat input, Carbon equivalent and preheat, Shielding gas…
Sheet metal
Cone and frustum, Shell course, Bend development…
Workshop
Unit converter, Bar cutting plan, Level and slope…
Machining
Cutting speed and feed, ISO 286 fits, Threads and tap drills…
The 51 tools
Each tool shows its formula, the worked calculation and its sources.
Piping 16
- Isometric plan
- Pipe offset
- Rolling offset
- Parallel pipe offset
- Branch on pipetemplate
- Branch on elbowtemplate
- Mitre bendtemplate
- Cut-down elbowtemplate
- Tee + elbow
- Reducertemplate
- Pipe bending
- Standard fittings
- Flanges and bolting
- Jacketed pipe
- Line weight
- Hydrostatic test
Welding 11
- Heat input
- Carbon equivalent and preheat
- Shielding gas
- Back purge
- Welding settings
- Weld shrinkage
- Filler metal weight
- Weld defect diagnosis
- ISO 5817 criteria
- Weld pass layout
- Dissimilar metal welding
Sheet metal 11
- Cone and frustumtemplate
- Shell coursetemplate
- Bend developmenttemplate
- Plate and section weight
- Drilling and tapping
- Right triangle
- Mitre cut
- Square-to-round transitiontemplate
- Hopper (pyramid frustum)template
- Plate end pre-bendingtemplate
- Frame plan
Workshop 3
- Unit converter
- Bar cutting plan
- Level and slope
Machining 10
- Cutting speed and feed
- ISO 286 fits
- Threads and tap drills
- Tightening torques
- Bolt circletemplate
- Tapers
- Measuring over pins
- Hardness conversion
- Turning surface finish
- Machining time
Dimensioned drawing
Each tool draws the part with its dimensions. Tapping a dimension opens its field.
3D view
19 tools also show the part in 3D: rotate, front view, back to the dimensioned drawing.
Isometric plan
A line entered item by item (straight, elbow, tee, reducer, flange, valve, branch, cap). Isometric and 3D view, cut list, materials, welds, PDF.
Glove keypad
96 × 88 dp keys in the bottom third, decimal comma and fractions (“3 1/2”), “Next” moves to the next field.
PDF, A4 templates and DXF
PDF of a calculation or job report. Templates split into A4 pages to assemble, with a 100 mm ruler, or DXF export for cutting.
Reference sheets
19 sheets to look up, even without a subscription: Welding symbols, Shielding gases ISO 14175, Grades and equivalents, General tolerances ISO 2768…
Jobs and weld log
Job details, linked calculations and photos. Weld log: mark, line, Ø, material, process, WPS, welder, NDT, status; CSV and PDF export.
Welders and qualifications
ISO 9606-1 deadlines computed (confirmation, continuity, revalidation), alerts on the home screen.
Backup without an account
One .metalary.json file, photos included, to share and import on another phone.
Built for the job site
Gloves, dirty or wet fingers, one hand, no network.
64 dp targets
Every button is at least 64 dp (≈ 10 mm) in both directions.
Controls at the bottom
Main action in the bottom third, under the thumb.
Formula and source
Under each result: formula, worked calculation and source.
Offline
No network request in the tools.
Full-screen result
The number very large, readable at arm’s length.
Indicative
Replaces neither the standards, nor a qualified WPS, nor the job drawings.
Millimetres or inches
Inches to 1/16 for input and dimensions; computed in mm.
Light or dark
Auto, light or dark theme; text contrast of at least 7:1.
Pricing
7-day free trial on the yearly and monthly plans.
Monthly
€4.99per month
no commitment
- 7 days free
- Cancel anytime
Yearly
€39.99per year
billed once a year
- 7 days free
- Cancel anytime
Lifetime
€89.99once
no trial
- One-time payment, no subscription
- No renewal
Prices in euros for France, VAT included.
With a subscription or lifetime access
- All calculation tools51 tools across 5 trades
- Isometric planLine by elements, isometric, 3D, cut list
- Full-scale templates and DXFA4 sheets to assemble, export for cutting
- Cutting layouts and 3D viewElbows, branches, flat patterns
- PDF and job fileCalculations, photos and log in one file
- Jobs and weld logMarks, inspections, statuses, CSV export
- Welder qualificationsISO 9606-1 due dates computed
Without a subscription
Still available:
- References19 sheets
- Unit converter
- Exporting your data
Your data stays on the phone
No account, no ads, no tracking, offline.
- Jobs
- Calculations
- Isometric plans
- Welds
- Photos
- Welders
Backup: one .metalary.json file, photos included, to share or import.
FAQ
Does the app work without a network?
Yes. Calculations, drawings, PDFs and templates are made on the phone; the tools make no network request.
How much does the app cost?
7-day free trial, then €39.99 per year or €4.99 per month, cancel anytime. Or €89.99 once for lifetime access, with no trial. Prices in euros for France, VAT included.
What is available without a subscription?
References (19 sheets), the Unit converter and exporting your data. The other tools and features need the trial, a subscription or lifetime access.
Do I need an account?
No. No account, no ads, no tracking. To change phones, a .metalary.json backup is shared and then imported.
Where do the values come from?
Each reference value cites its source, shown under the result with the formula and the worked calculation. Examples: EN 10220 and ASME B36.10M for pipes, EN 1092-1 and ASME B16.5 for flanges, ISO 14175 for gases, EN 1011-1 for heat input, ISO 286 for fits.
Are the results normative?
No, they are indicative. They replace neither the applicable standards, nor a qualified WPS or procedure, nor the job drawings and instructions. Check a dimension before cutting.
Can I work in inches?
Yes. Setting “Inches (1/16)”: fraction input (“3 1/2”) and drawing dimensions in inches. The calculation is still done in millimetres.
Do templates print at the right size?
Print at 100 %, no fit to page. Each page carries a 100 mm ruler to check. Tools with a template: Branch on pipe, Branch on elbow, Mitre bend, Cut-down elbow, Reducer, Cone and frustum, Shell course, Bend development, Square-to-round transition, Hopper (pyramid frustum), Plate end pre-bending, Bolt circle.
Android or iOS?
Both. The app is not in the stores yet.
Which languages?
French and English, chosen in the settings or from the phone.
Coming soon
Coming to Android and iOS
Metalary is not in the stores yet.
Android
iOS
A question:contact@metalary.app