TrueLine: One-Line Diagram
Electrical Diagram & PDF
About
Create professional electrical one-line diagrams on your iPhone or iPad. Utilize practical templates, input project details, and review code-referenced sizing. A one-time purchase unlocks premium features and vector PDF export.
What's New in TrueLine
1.0.2
October 23, 2026
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.
MoreSubscriptions & In-App Purchases
TrueLine Pro
Unlock all pro features, billed yearly
Developer apps
FAQ
What is TrueLine?
TrueLine is a mobile application designed for creating clear electrical one-line diagrams on iPhones and iPads. It offers practical templates, project detail input, and code-referenced sizing for electrical professionals.
How does TrueLine's pricing work?
TrueLine is free to download and use. The 'TrueLine Pro' version, which unlocks premium templates and advanced features like professional vector PDF export, is a one-time purchase of $4.99 for one month or $39.99 for one year. There are no subscription or recurring charges for the Pro features.
Does TrueLine have ads?
No, TrueLine does not contain advertisements. The app is free to download, and any advanced features are unlocked through a one-time purchase.
What devices does TrueLine support?
TrueLine is available for iPhone, iPad, and iPod devices. It is designed to work across these Apple platforms.
Is TrueLine suitable for beginners?
TrueLine is intended as a design aid for qualified electrical professionals. While it offers templates, users should always verify project conditions and code requirements before construction or submission.
How often is TrueLine updated?
The latest version of TrueLine is 1.0.2, which was last updated on October 23, 2026. Updates are released to improve functionality and add features.
Can I work on TrueLine projects offline?
Yes, your projects stay on your device unless you choose to export or share them. This allows for offline work and ensures your data remains private.
What is the age rating for TrueLine?
TrueLine has an age rating of 4+. This indicates it is suitable for a wide range of users, though its primary audience is electrical professionals.
