# LRV Contrast Calculator vs Roofmate

The clearest difference is in-app purchases: LRV Contrast Calculator at none against Roofmate's 3. LRV Contrast Calculator also leads on iOS requirement (8.0 vs 15.1). Roofmate's advantage is update cadence (monthly vs every 30 months). On price, ads and device support there is nothing between them.

Both are free to download. Roofmate sells 3 in-app purchases, starting at $19.99 per month. LRV Contrast Calculator asks for nothing beyond the download.

LRV Contrast Calculator ships an update every 30 months, Roofmate monthly. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | LRV Contrast Calculator | Roofmate |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 30 months | **Monthly** |
| Monetization | Free | — |
| Size | 3 MB | 45 MB |
| Requires iOS | **8.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Behzad Gorimar](https://appshunter.io/developer/1125854088) | [Roofmate PTY LTD](https://appshunter.io/developer/1783934465) |

## What reviewers say

### LRV Contrast Calculator

[App page](https://appshunter.io/ios/app/lrv-contrast-calculator/id1216079807)

Calculate the required Luminance Reflectance Value (LRV) contrast between adjoining materials. Essential for architects, designers, and consultants to meet accessibility standards for low-vision individuals.

**Highlights:** Calculates LRV contrast percentage, Supports USA (ADA) and Australia (AS/NZ) formulas, Useful for architects and designers, Helps identify building elements for low vision, Meets accessibility standards

**Features:** macOS Compatibility

**In-app purchases:** none


### Roofmate

[App page](https://appshunter.io/ios/app/roofmate/id6739155887)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Render Basic Plan | $19.99 | per month |
| Render Premium Plan | $39.99 | per month |
| Render Pro Plan | $59.99 | per month |


## Frequently asked questions

### Is LRV Contrast Calculator free?

LRV Contrast Calculator is free to download, with no in-app purchases.

### Is Roofmate free?

Roofmate is free to download, with in-app purchases available.

### Do LRV Contrast Calculator or Roofmate have ads?

Neither LRV Contrast Calculator nor Roofmate shows ads.

### Which is updated more often, LRV Contrast Calculator or Roofmate?

LRV Contrast Calculator ships an update every 30 months, and Roofmate monthly. Most recently, LRV Contrast Calculator was updated on November 2, 2026 and Roofmate on November 4, 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.*