# Construction Roofing calc vs GridLab ROI

The clearest difference is in-app purchases: GridLab ROI at none against Construction Roofing calc's 4. GridLab ROI also leads on update cadence (every 3 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Construction Roofing calc sells 4 in-app purchases, starting at $0.99 per month. GridLab ROI asks for nothing beyond the download.

Construction Roofing calc ships an update monthly, GridLab ROI every 3 days. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Construction Roofing calc | GridLab ROI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (10 ratings)](https://appshunter.io/ios/app/construction-roofing-calc/id6532623074/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 44 MB |
| Requires iOS | 16.2 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Vladislav Zhirnov](https://appshunter.io/developer/1476188065) | [Maksym Kovalov](https://appshunter.io/developer/1868068857) |

## What reviewers say

### Construction Roofing calc

[App page](https://appshunter.io/ios/app/construction-roofing-calc/id6532623074)

Simplify roofing projects with a comprehensive calculator app for professionals and DIYers. Quickly estimate materials, calculate cuts, and determine costs for various roof types. Essential tools for accurate and efficient roofing work.

**Highlights:** Birdsmouth Cut calculator, Gambrel Roof calculator, Metal Roof Cost estimator, Rafter Length calculator, Truss Count calculator, Roof Shingle estimator

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ADS | $0.99 | per month |
| Remove ADS Year | $2.99 | per year |
| Remove ADS | $3.99 | one-time |
| Remove ADS | $5.99 | one-time |


### GridLab ROI

[App page](https://appshunter.io/ios/app/gridlab-roi/id6759988870)

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

**In-app purchases:** none


## Frequently asked questions

### Is Construction Roofing calc free?

Construction Roofing calc is free to download, with in-app purchases available.

### Is GridLab ROI free?

GridLab ROI is free to download, with no in-app purchases.

### Do Construction Roofing calc or GridLab ROI have ads?

Neither Construction Roofing calc nor GridLab ROI shows ads.

### Which is updated more often, Construction Roofing calc or GridLab ROI?

Construction Roofing calc ships an update monthly, and GridLab ROI every 3 days. Most recently, Construction Roofing calc was updated on September 22, 2026 and GridLab ROI on September 21, 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.*