UA Local 170 vs SM Offset
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
UA Local 170
This official union app provides members with access to union dues payment, job listings, and referral information. Stay updated with important announcements, receive notifications, and view special messages.
- Pay monthly union dues
- View and apply for jobs
- Access referral list information
- Receive important notifications
- View special messages
Read full descriptionHide full description
United Association Of Plumbers & Pipe-fitters Local 170's official app. - View current information and pay monthly union dues - View, filter and apply for available jobs - View and filter referral list information - View filled jobs - Receive notifications for any updates - Receive birthday notifications - View and download special messages
SM Offset
This utility app provides precise offset calculations for sheet metal workers, HVAC fabricators, and pipefitters. It offers real tape-measure fractions for cut lengths, arc lengths, and elbow centerlines, working entirely offline for jobsite reliability.
- Two-elbow offset calculations
- Rolling offset calculations
- Duct fitting offsets
- Custom angle support
- Results in real fractions
- 100% offline functionality
Read full descriptionHide full description
SM Offset is a field calculator for sheet metal workers, HVAC fabricators and pipefitters, built by a working sheet metal tradesman. Every calculator is free, it works with no signal, and answers come out in real tape-measure fractions. ROUND • Two-elbow offset: cut joint, travel and multiplier for a flat offset • Rolling offset: rise and roll combined into one true offset, with the cut length to match RECTANGULAR • Radius elbows: two radius elbows plus a straight joint, with cut joint, travel and multiplier • Mitered offset: square-throat elbows, with cheek length and miter setback • Offset in a length: drop in the run you have, and the app works out the angle TOOLS • Duct resizer: something in the way? Shrink a side, keep the airflow • Equivalent duct: round to rectangular and back (ASHRAE equal-friction and equal-area) • Fraction ⇄ decimal, right triangle (any two values), arc length SEND IT TO THE CREW • Share any offset result as a text, with every size, angle and cut length WHY TRADES TRUST IT • Every offset is exact trig, cross-checked two independent ways • A live drawing of the fitting as you type • Fractions to 1/16" (or 1/32"), decimals, or metric • Your shop's connection allowance, set once • Recent calculations saved automatically • Fast, dark, glove-friendly Whether you're laying out ductwork in the shop or solving an offset on the roof, SM Offset gives you numbers you can cut to.
Screenshots
Verdict
The clearest difference is ads: UA Local 170 at none against SM Offset's shown. UA Local 170 also leads on monetization model (free vs ad-supported). On price, update cadence, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
UA Local 170 ships an update monthly, SM Offset every 2 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.
| Parameter | UA Local 170 | SM Offset |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.0 (2 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | — | 2 — better |
| Update frequency | Monthly | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 46 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | United Association of Plumbers and Pipefitters Local 170 | Bradley Evans |
Customer experience
UA Local 170
SM Offset
In-app purchases
UA Local 170
No in-app purchases
SM Offset
No in-app purchases









