FitterMaster: Pipe Fitter Calc
Rolling Offsets & Takeouts
About
This app provides essential calculations for pipe fitting, including rolling offsets, fitting takeouts, and flange bolt-up details. It works entirely offline and offers a free version with core features, with a one-time purchase unlocking advanced functionalities.
What's New in FitterMaster
1.3.0
September 15, 2026
The rating prompt was counting a result card every time it scrolled back into view. iOS only lets an app ask three times per user per year, so that quota was being spent on somebody who had scrolled up and down, not on somebody who had actually finished three calculations. A card now counts once.
MoreSubscriptions & In-App Purchases
$9.99
FitterMaster Pro
Every calculator, chart and template. Forever.
Developer apps
FAQ
Does FitterMaster work offline?
Yes, FitterMaster works 100% offline. All calculations and features are available on your device without needing an internet signal on the jobsite, and there are no license checks.
Is FitterMaster a subscription app?
No, FitterMaster is not a subscription app. You can purchase the Pro version with a one-time payment to own all features forever. The app explicitly states 'No subscription. Pay once, own it forever.'
What features are free in FitterMaster?
The free version includes the full offset calculator at 45 degrees with cut length, Schedule 40 pipe data, and the tape math converter. This allows users to test core functionalities before purchasing.
What is included in the Pro version of FitterMaster?
The Pro version unlocks every fitting angle, odd-angle cuts, miter, saddle, and lateral templates, dummy leg calculations, the B16.9 takeout chart, B16.5 flange bolt-up, other pipe schedules, saved spools, and metric mode. It also removes ads.
Does FitterMaster support metric measurements?
Yes, FitterMaster includes a full metric mode (mm) that is available as part of the Pro version. This allows users to work with measurements in millimeters.
Where do the calculation numbers in FitterMaster come from?
The numbers used in FitterMaster are verified against published ASME B16.9, B16.5, and B36.10 tables, and cross-checked with independent numeric solvers. Every result is accompanied by a clear diagram.
Does FitterMaster have ads?
Yes, the free version of FitterMaster contains advertisements. To remove ads and access all advanced features, users can purchase the Pro version.
What is the age rating for FitterMaster?
FitterMaster has an age rating of 4+. This indicates it is suitable for a wide range of users, including younger apprentices.
