Trade Calculator Comparisons
Honest comparisons of construction, electrical, and pipe fitting calculator apps.
AWC Span Calc App Is Broken — Here's What to Use Instead
The official AWC Span Calc app has a 2.9-star rating with reports of broken dropdowns and crashes. Compare working alternatives for structural span calculations.
Best Electrical Calculator Apps for iPhone 2026 — NEC Wire Sizing & Voltage Drop
Compare the top electrical calculator apps for iPhone in 2026. NEC 2023 and 2026 wire sizing, voltage drop, and conduit fill — with and without subscriptions.
Best Framing & Carpentry Calculator Apps for iPhone 2026
Compare the top framing and carpentry calculator apps for iPhone. Stair calculations, rafter math, board feet — with and without subscriptions.
Best Pipe Fitting Calculator Apps for iPhone 2026 — Offset & Rolling Offset
Compare the top pipe fitting and steamfitting calculator apps for iPhone. Offset calculations, pipe data, and Victaulic compatibility — with and without subscriptions.
Best Trade Calculator Apps for iPhone — No Subscription Required (2026)
The best construction, electrical, pipe fitting, and structural calculator apps for iPhone that don't charge a monthly subscription. One-time purchase options for every trade.
Construction Master Pro Alternatives — No Subscription Required
Construction Master Pro moved to $20/month. Here are the best one-time-purchase alternatives for carpenters, framers, and contractors who refuse to rent their calculator.
ElectriCalc Pro Alternatives — NEC 2023 & 2026 Without the Subscription
ElectriCalc Pro moved to a $29.99/year subscription. Compare the best alternative electrical calculators for NEC wire sizing, voltage drop, and conduit fill.
Free Online Calculators vs. Paid Apps — When Do You Need the App?
Compare free web-based trade calculators vs. paid native apps. Learn when free online tools are enough and when to invest in an offline app for your trade.
Pipe Trades Pro Alternatives — Pipe Offset Calculators Without a Subscription
Pipe Trades Pro by Calculated Industries moved to subscription pricing. Compare the best alternative pipe fitting calculator apps with offset diagrams and rolling offset support.
Why Trade Calculator Apps Moved to Subscriptions — And Why We Won't
Calculated Industries moved Construction Master Pro, ElectriCalc Pro, and Pipe Trades Pro to subscriptions. Here's why it happened, what it costs you, and why FieldLab calculators will stay one-time purchases.