Comparison

IS RT vs WeldUp Pocket

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

IS RT

Features
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IS RT vous permet d’accéder à plusieurs fonctionnalités, dont : - Calcul de temps de pose en Ir192 et Se75 - Estimation de la distance focale mini - Estimation du flou géométrique - Prise en compte des matériaux - Prise en compte des coefficients de rapidité des films IS RT provides access to several features, including: - Exposure time calculation for Ir192 and Se75 sources - Estimation of source-film minimal distance - Estimation of geometric unsharpness - Consideration of material types - Consideration of film speed coefficients (R-factor)

About

WeldUp Pocket

This app provides a comprehensive suite of tools for pipefitters, welders, and fabricators. It offers calculations for offsets, tube bending, welding settings, and material specifications, all accessible offline. Designed for practical use in the field, it helps streamline complex calculations and job management.

Highlights
  • Offline functionality
  • Pipefitting calculations (offset, bending, templates)
  • Welding settings and distortion analysis
  • Fabrication development tools
  • Material specification and traceability
  • Job management and export
  • Customizable interface for gloved hands
Features
Read full description

A tape, a soapstone, and a number that has to be right the first time. WeldUp Pocket gathers what a pipefitter, a welder and a fabricator have always worked out in their head or on a scrap of cardboard: the offset, the flat pattern, the saddle, the machine settings. Forty-one tools, one entry, one answer. Nothing to look up, nothing to wait for. EVERYTHING WORKS OFFLINE Under a vessel, in a trench, up in the steel: the app never asks for a signal. No account, no ads, no data leaving the phone. PIPEFITTER • Offset — any angle, center-to-center and the pipe length to cut • Tube bending — where to mark, how much to cut, what the wall takes • Pipe branch template — the saddle wrap, printed at full scale • Iso sketch — draw the run first, dimension it after, get the pipe takeoff and the spool pieces, and export the drawing as a PDF • Single elbow, short offset, pipe bank & flag — stock-elbow offsets and lines that follow one route • Custom elbow — the take-out of an elbow cut to an angle the catalog does not carry • Custom reducer — where to cut a stock reducer for the size you are missing • Accessory library — a valve's face-to-face measured once, dropped onto the drawing in one tap • Hydrostatic test — test pressure and water volume • Line weight — pipe, water, insulation • Level — slope and plumb, two full-screen vials, zeroed on the spot WELDER • Amperage settings — process, material, thickness, joint and position: a 10 A window to dial into the machine • Weld shrinkage — shrinkage, angular pull, the gap to build in before you weld instead of fighting it after • Gas selection — mix, ISO 14175 class, cylinder color • Flow and purge — flow rate, time, chamber volume • Weld spacing — intermittent welds laid out ahead • Metallurgical compatibility and weld defect diagnostics • Torch components — TIG and MIG diagrams, tap any part FABRICATOR • Bend, cone and shell course development — the profile drawn bend by bend • Bump bending, element lines, trigonometry — press, layout, squaring • Neutral axis, joint allowances, weight, check circumference • Drilling and tapping — speed, feed, pilot hole, and the drill to pick for any M size LIBRARY • Material specification — which diameter, which wall, which grade for which job, with the loads to put a number on it • Material traceability — the camera reads the pipe marking (grade, heat number, lot) and files it under the open job • Flange gasket — start from the fluid, not the gasket: first choice, fallbacks, the traps that cost • Flange bolting — how many bolts, what diameter, what length, what wrench: EN 1092-1 and ASME B16.5 • Section weight — square tube, angle, flat, round, at the length you need • Grades, weld and piping symbols, polarity, fitting dimensions, unit converter BUILT AROUND THE JOB Open a job: everything calculated after that hangs off it. History keeps seven days, one line reopens the tool with the values already in, and a whole job goes out in a single message — text, mail, chat. MADE FOR WORKING HANDS A keypad sized for a gloved finger, with the fraction bar. Light theme readable in full sun, dark in the shop. Imperial or metric: inches to the sixteenth, a dimension types as "3 1/2", the way it reads on the print. IN SIX LANGUAGES English, French, Spanish, German, Italian, Polish. Interface, reference sheets and release notes. HONEST ABOUT WHAT IT IS The values are indicative. They replace neither the applicable codes (ASME, AWS) nor a qualified WPS — they save the ten minutes between the question and the answer. And every result shows where its number comes from. Made by a welder, for the people who set the steel.

Screenshots

IS RT4 screens
WeldUp Pocket4 screens

Verdict

The call

The clearest difference is update cadence: WeldUp Pocket at every 10 days against IS RT's every 5 months. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

IS RT ships an update every 5 months, WeldUp Pocket every 10 days. The most recent releases landed on September 17, 2026 and September 24, 2026 respectively.

Scorecard1 real difference · 7 level
IS RT versus WeldUp Pocket: the parameters behind the verdict, then further details
ParameterIS RTWeldUp Pocket
PriceFreeFree
Positive reviews—100.0% of reviews
Update frequencyEvery 5 monthsEvery 10 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.615.5 — better
Further details — not scored
Size28 MB62 MB
Age rating17+4+
DeveloperInstitut de SoudureLison Robin

In-app purchases

None

IS RT

No in-app purchases

None

WeldUp Pocket

No in-app purchases

Questions

Is IS RT free?
IS RT is free to download, with no in-app purchases.
Is WeldUp Pocket free?
WeldUp Pocket is free to download, with no in-app purchases.
Do IS RT or WeldUp Pocket have ads?
Neither IS RT nor WeldUp Pocket shows ads.
Which is updated more often, IS RT or WeldUp Pocket?
IS RT ships an update every 5 months, and WeldUp Pocket every 10 days. Most recently, IS RT was updated on September 17, 2026 and WeldUp Pocket on September 24, 2026.

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