Lien - Trades Calculator
iOS app by Mitaanshu Agarwal. Utilities · Mitaanshu Agarwal
- Store rating
- 0 / 5
- Store rating count
- 0
- Download price
- Free to download
- In-app purchases
- Unknown
- Version
- 1.0
- Listing last refreshed
- 2026-09-08
View the original store listing
Store description excerpt
Every trade calculation. One app. Forever offline. Lien bundles the everyday calcs that electricians, plumbers, HVAC techs, and carpenters reach for on the truck — in a clean, fast iOS app that works without signal. WHAT'S INSIDE (18 calculators) - Electrical (6): wire size, voltage drop, conduit fill, box fill, motor FLA, service load. - Plumbing (4): friction loss, fixture units, drain size, water-heater sizing. - HVAC (4): BTU sizing, duct size, SEER cost, composite R-value. - Carpentry (4): cut list, beam span, rafter, stairs. MORE THAN A CALCULATOR - Save calculations and group them into named Projects, then export a clean PDF for the inspector or the client. - Reference tables bundled offline: NEC ampacity, conduit fill, pipe sizing, R-values, fastener guide. - Pick your code region (US NEC, UK BS 7671, AU/NZ AS 3000); tables and formulas calibrate to it. - 100% on-device. No accounts, no cloud, no data sync. Built dark-mode-first for job-site readability. FREE TIER - The full Electrical trade (6 calculators) and up to 3 saved calculations — free, forever. LIEN PRO (auto-renewing subscription) - Unlocks all 4 trades (18 calculators), unlimited saved calculations, and Projects with PDF export. - $9.99/month or $59.99/year (about 3 months free on the yearly plan). - Payment is charged to your Apple Account at purchase confirmation. The subscription renews automatically for the same price and period unless you turn off auto-renew at least 24 hours before the end of the current period. Manage or cancel anytime in Settings > Apple Account > Subscriptions. DISCLAIMER Lien is a calculator. Always verify results against the current local code in force (NEC, IPC, IMC, IBC, or the regional equivalent). Lien is not a licensing or certification authority. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://lien.uptrail.ai/privacy
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