ROE Calculator vs VNNOX Care
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ROE Calculator
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.
- Ballast calculation
- Pixel and resolution calculation
- Power requirement analysis
- Technical calculations for LED screens
- On-site and preparation tools
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ROE Visual is proud to announce the release of its groundbreaking ROE Calculator APP. This cutting-edge application is a complete upgrade of the previous ballast calculator and has added many new and exciting options to create essential technical calculations for your LED screens. With a comprehensive suite of tools that include ballast calculation, pixel and resolution calculation, power requirement analysis, and much more, the ROE Calculator APP will become the ultimate tool for LED technicians, whether on-site or in the preparation stages of production.
VNNOX Care
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.
- Pre-sale management
- Construction management
- After-sales operations
- Maintenance services
- Operation efficiency improvement
- Service cost reduction
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Professional display screen pre-sale, construction, after-sales operation and maintenance management service cloud platform Effectively improve operation and maintenance efficiency, reduce service costs, and create greater value for enterprises
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | ROE Calculator | VNNOX Care |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | 2.5 (4 ratings) |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 1 | 4 — better |
| Update frequency | Every 6 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 12.1 — better |
| Further details — not scored | ||
| Size | 29 MB | 189 MB |
| Age rating | 4+ | 4+ |
| Developer | ROE Visual Co., Ltd | Xi'an NovaStar Tech Co.,Ltd |
Customer experience
ROE Calculator
VNNOX Care
In-app purchases
ROE Calculator
No in-app purchases
VNNOX Care
No in-app purchases
Questions
Is ROE Calculator free?
Is VNNOX Care free?
Which has better reviews, ROE Calculator or VNNOX Care?
Do ROE Calculator or VNNOX Care have ads?
Which is updated more often, ROE Calculator or VNNOX Care?
Other comparisons
