# LRV Contrast Calculator vs Widget Studio

The clearest difference is update cadence: Widget Studio at every 3 days against LRV Contrast Calculator's every 30 months. LRV Contrast Calculator's advantage is iOS requirement (8.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

LRV Contrast Calculator ships an update every 30 months, Widget Studio every 3 days. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | LRV Contrast Calculator | Widget Studio |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 30 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 3 MB | 27 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Behzad Gorimar](https://appshunter.io/developer/1125854088) | [Daniel Hall](https://appshunter.io/developer/6793901687) |

## 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


### Widget Studio

[App page](https://appshunter.io/ios/app/widget-studio-home-assistant/id6821856563)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is LRV Contrast Calculator free?

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

### Is Widget Studio free?

Widget Studio is free to download, with no in-app purchases.

### Do LRV Contrast Calculator or Widget Studio have ads?

Neither LRV Contrast Calculator nor Widget Studio shows ads.

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

LRV Contrast Calculator ships an update every 30 months, and Widget Studio every 3 days. Most recently, LRV Contrast Calculator was updated on November 2, 2026 and Widget Studio on October 31, 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.*