# ROE Calculator vs VNNOX Care

The clearest difference is review sentiment: ROE Calculator at 100% against VNNOX Care's 0%. ROE Calculator also leads on rating (4.0 vs 2.5). VNNOX Care's advantage is ratings volume (4 vs 1) and iOS requirement (12.1 vs 15.1). On price, update cadence, ads and in-app purchases there is nothing between them.

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

ROE Calculator holds the better App Store score, 4.0 against 2.5. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews point the same way: 100% of ROE Calculator's written reviews are positive against 0% of VNNOX Care's.

ROE Calculator ships an update every 6 weeks, VNNOX Care every 2 months. The most recent releases landed on June 1, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | ROE Calculator | VNNOX Care |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/roe-calculator/id6443583117/reviews)** | [2.5 (4 ratings)](https://appshunter.io/ios/app/vnnox-care/id6449488021/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 29 MB | 189 MB |
| Requires iOS | 15.1 | **12.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ROE Visual Co., Ltd](https://appshunter.io/developer/966467215) | [Xi'an NovaStar Tech Co.,Ltd](https://appshunter.io/developer/927755313) |

## What reviewers say

### ROE Calculator

[App page](https://appshunter.io/ios/app/roe-calculator/id6443583117)

This application provides essential technical calculations for LED screens, including ballast, pixel, and power requirement analysis. It's designed to be the ultimate tool for LED technicians during on-site work and production preparation.

**Highlights:** Ballast calculation, Pixel and resolution calculation, Power requirement analysis, Technical calculations for LED screens, On-site and preparation tools

**Features:** macOS Compatibility

**In-app purchases:** none


### VNNOX Care

[App page](https://appshunter.io/ios/app/vnnox-care/id6449488021)

This cloud platform streamlines the management of professional display screens, covering pre-sale, construction, and after-sales operations. It aims to boost efficiency, cut service costs, and deliver enhanced value for businesses.

**Highlights:** Pre-sale management, Construction management, After-sales operations, Maintenance services, Operation efficiency improvement, Service cost reduction

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ROE Calculator free?

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

### Is VNNOX Care free?

VNNOX Care is free to download, with no in-app purchases.

### Which has better reviews, ROE Calculator or VNNOX Care?

ROE Calculator is rated higher. ROE Calculator averages 4.0 out of 5 from 1 ratings, while VNNOX Care averages 2.5 from 4 ratings.

### Do ROE Calculator or VNNOX Care have ads?

Neither ROE Calculator nor VNNOX Care shows ads.

### Which is updated more often, ROE Calculator or VNNOX Care?

ROE Calculator ships an update every 6 weeks, and VNNOX Care every 2 months. Most recently, ROE Calculator was updated on June 1, 2026 and VNNOX Care on June 11, 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.*