Concrete Help vs Lumen Layout
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Concrete Help
Easily calculate the concrete volume needed for various shapes like holes, slabs, and tubes. Customize input and output units, and set decimal precision for accurate measurements.
- Calculate concrete volume for holes, slabs, and tubes
- Select input units (mm, cm, m, km, inches, feet, yards, miles)
- Select output units (cubic mm, cm, m, km, inches, feet, yards, miles)
- Customize decimal place precision
- Supports iPhone and iPad
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Concrete Help is the easiest way to find how much concrete is needed for a given hole, slab or tube. Features Include: - Accurately solve concrete volume equations - Set preferred input units from: mm, cm, m, km, inches, feet, yards and miles - Set preferred output units from: mm³, cm³, m³, km³, cubic inches, cubic feet, cubic yards and cubic miles - Select your preferred number of decimal places
Lumen Layout
This app helps calculate pot light layouts for rooms. It offers both basic and advanced modes for quick or precise planning, providing a clear results page with light coordinates and spacing diagrams.
- Pot light layout calculation
- Basic and advanced modes
- Customizable room dimensions
- Light spacing options
- Results page with coordinates
- Diagram for reference
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Introducing Lumen Layout - your new pot light layout calculator. Offering simplicity, flexibility and a beautiful design for a reasonable price. Choose between basic and advanced modes to get the layout you need - fast. Here's the difference: Basic is quick and simple - add room dimensions, choose your layout and specify the number of lights. Advanced offers more precision - specify width and length for room dimensions, number of lights and spacing style to get the most customizable layout possible. Both options end in the same place: a simple and easy to understand results page where each individual light's coordinates are presented in a list with the light spacing and a diagram to reference. Get Lumen Layout today and let us help speed up that tedious layout process!
Screenshots
Verdict
The clearest difference is review sentiment: Concrete Help at 100% against Lumen Layout's 50%. Concrete Help also leads on rating (4.7 vs 1.0) and ratings volume (115 vs 1). Lumen Layout's advantage is update cadence (every 2 months vs every 15 months). On ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Concrete Help costs $1.99 and Lumen Layout $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Concrete Help holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: Concrete Help has 115 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Concrete Help's written reviews are positive against 50% of Lumen Layout's.
Concrete Help ships an update every 15 months, Lumen Layout every 2 months. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.
| Parameter | Concrete Help | Lumen Layout |
|---|---|---|
| Price | $1.99 — better | $4.99 |
| Rating | 4.7 (115 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 115 — better | 1 |
| Update frequency | Every 15 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 10.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 6 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Armchair Engineering | The Sparky |
Customer experience
Concrete Help
Lumen Layout
In-app purchases
Concrete Help
No in-app purchases
Lumen Layout
No in-app purchases
Questions
Is Concrete Help free?
Is Lumen Layout free?
Which has better reviews, Concrete Help or Lumen Layout?
Do Concrete Help or Lumen Layout have ads?
Which is updated more often, Concrete Help or Lumen Layout?
Other comparisons
