TrueLine: One-Line Diagram
Electrical Diagram & PDF
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Build clear electrical one-lines from practical templates, review NEC-referenced sizing, and export the supported project scope as a vector PDF.
Build clear electrical one-line diagrams on iPhone and iPad.
Start from practical electrical templates, enter project and equipment details, review NEC-referenced sizing, and edit the supported diagram scope.
TrueLine Pro is a one-time purchase that unlocks premium templates, advanced project features, and professional vector PDF export. There is no subscription or recurring charge.
Projects stay on your device unless you export or share them.
TrueLine is a design aid for qualified electrical professionals. Always verify project conditions, equipment data, applicable code, and authority-having-jurisdiction requirements before construction or submission.
Ratings & Reviews
TrueLine Pro is now a one-time purchase: unlock unlimited one-line diagrams, PDF export, and sharing with a single purchase — no subscription. Buy once, unlock forever. Includes stability and performance improvements.
The developer, Nicole Nalley, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Nicole Nalley
- Size
- 2.9 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- TrueLine Pro Unlock $9.99
- Copyright
- © 2026 509 Electric LLC