Support

Need help with one of our apps?

Email

Send detailed questions or bug reports to [email protected]. Please include your app name, OS version, and a description of what happened. We respond within 1-2 business days.

Per-app support pages

Each app has its own support page with FAQs and known limitations:

• Electools — NEC calculators (9 apps)
• HVAC Tools — heat load, duct, refrigerant (10 apps)
• PlumbTools — IPC/UPC plumbing (12 apps)
• SolarTools — NEC 690 solar (10 apps)
• FireTools — NFPA fire protection (10 apps)
• CarpentryTools — IRC carpentry (12 apps)
• BuildTools — concrete & fence (2 apps)

Refunds & Pro purchase issues

Pro purchases are processed through the Apple App Store or Google Play. For refund requests, please contact the platform directly:

• iOS: reportaproblem.apple.com
• Android: support.google.com/googleplay

If your Pro unlock didn't activate after purchase, email us — we can help verify the receipt.