# Generac Field Pro vs Lumen Layout

The clearest difference is price: Generac Field Pro at Free against Lumen Layout's $4.99. Generac Field Pro also leads on rating (2.9 vs 1.0) and update cadence (every 2 weeks vs every 3 months). Lumen Layout's advantage is review sentiment (50% vs 18%). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Generac Field Pro is free to download; Lumen Layout costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Generac Field Pro holds the better App Store score, 2.9 against 1.0. That said, the two scores are not equally well evidenced: Generac Field Pro has 30 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 18% of Generac Field Pro's written reviews are positive against 50% of Lumen Layout's, so the app with the better star average is not the one people write more warmly about.

Generac Field Pro ships an update every 2 weeks, Lumen Layout every 3 months. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Generac Field Pro | Lumen Layout |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[2.9 (30 ratings)](https://appshunter.io/ios/app/generac-field-pro/id6550921902/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/lumen-layout/id6739475851/reviews) |
| Number of ratings | **30** | 1 |
| Positive reviews | 18.2% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | **Free** | Paid |
| Size | 76 MB | 13 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Generac Power Systems, Inc.](https://appshunter.io/developer/829129500) | [The Sparky](https://appshunter.io/developer/1747077864) |

## What reviewers say

### Generac Field Pro

[App page](https://appshunter.io/ios/app/generac-field-pro/id6550921902)

Streamline the installation and servicing of energy systems with guided workflows, smart firmware updates, and comprehensive diagnostics. This tool facilitates full system testing and in-app activation for a faster, more efficient process.

**Highlights:** Guided commissioning workflow, Smart firmware updates, Full system testing, Product diagnostics, In-app activation and registration

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Lumen Layout

[App page](https://appshunter.io/ios/app/lumen-layout/id6739475851)

This app helps calculate pot light layouts for rooms. It offers basic and advanced modes for quick or precise planning, providing coordinates and diagrams for each light. Streamline your lighting design process with this user-friendly tool.

**Highlights:** Pot light layout calculation, Basic and advanced modes, Customizable room dimensions, Light spacing options, Individual light coordinates, Diagrammatic reference

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Generac Field Pro free?

Generac Field Pro is free to download, with no in-app purchases.

### Is Lumen Layout free?

Lumen Layout costs $4.99, with no in-app purchases.

### Which has better reviews, Generac Field Pro or Lumen Layout?

Generac Field Pro is rated higher. Generac Field Pro averages 2.9 out of 5 from 30 ratings, while Lumen Layout averages 1.0 from 1 ratings.

### Do Generac Field Pro or Lumen Layout have ads?

Neither Generac Field Pro nor Lumen Layout shows ads.

### Which is updated more often, Generac Field Pro or Lumen Layout?

Generac Field Pro ships an update every 2 weeks, and Lumen Layout every 3 months. Most recently, Generac Field Pro was updated on November 8, 2026 and Lumen Layout on November 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*