# TrueLine: One-Line Diagram — Electrical One-Line Generator

> Electrical One-Line Generator (iPhone/iPad app by Nicole Nalley.)

- Source: https://appshunter.io/ios/app/trueline-one-line-diagram/id6773567376 (this page in markdown: same URL + `.md`)
- Developer: [Nicole Nalley](https://appshunter.io/developer/1894562817)
- Category: Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 3 MB
- Languages: American English
- Released: 2026-07-10
- Data updated: 2026-08-26
- User reviews in markdown: https://appshunter.io/ios/app/trueline-one-line-diagram/id6773567376/reviews.md

## What is TrueLine?

TrueLine generates professional one-line electrical diagrams for residential and commercial projects. Design complete single-line diagrams with NEC-compliant conductor sizing, overcurrent protection, and equipment scheduling.

FEATURES
• Interactive canvas with drag-and-drop circuit layout
• Automatic conductor and breaker sizing per NEC
• NEC compliance checking with real-time violation alerts
• Professional PDF export for submittals and permits
• Dark and light diagram themes
• Layer controls for conductor labels, EGC, NEC tags, and callouts
• Support for panels, sub-panels, and service equipment

FREE FEATURES
• Residential single-phase diagrams
• Standard panel configurations
• NEC compliance checking
• PDF export

PRO SUBSCRIPTION
• Commercial and industrial projects
• Three-phase power systems
• Generator and ATS configurations
• Sub-panel and motor circuits
• Advanced export options

TrueLine Pro is available as a monthly ($4.99/month) or yearly ($39.99/year) auto-renewable subscription. Payment is charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless turned off at least 24 hours before the end of the current period. You can manage and cancel subscriptions in your Account Settings. Any unused portion of a free trial will be forfeited when you purchase a subscription.

Privacy Policy: https://line.509electric.com/privacy
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| TrueLine Pro | $39.99 | per year |
| TrueLine Pro | $4.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| TrueLine Pro Unlock | $9.99 | one-time |



## Version history (last 2 releases)

### 1.0.1 — 2026-07-15

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.

### 1.0 — 2026-07-09

No release notes.

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## More apps by Nicole Nalley

- [509 Electric](https://appshunter.io/ios/app/509-electric/id6762534343)
- [TruePhase](https://appshunter.io/ios/app/truephase/id6771228149)
- [TrueFault: Fault Current Calc](https://appshunter.io/ios/app/truefault-fault-current-calc/id6772432318)
- [TrueOhm](https://appshunter.io/ios/app/trueohm/id6772605137)
- [TrueMotor](https://appshunter.io/ios/app/truemotor/id6772608589)
- [TrueFill: Conduit Fill](https://appshunter.io/ios/app/truefill-conduit-fill/id6772631228)

All apps by Nicole Nalley: https://appshunter.io/developer/1894562817

## Related topics

[electrical diagram maker](https://appshunter.io/ios/topics/electrical-diagram-maker) · [diagram electrical](https://appshunter.io/ios/topics/diagram-electrical) · [electrical layout designer](https://appshunter.io/ios/topics/electrical-layout-designer)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*