# ROE Calculator > Technical calculator for LED screen setup and production. (iPhone/iPad app by ROE Visual Co., Ltd.) - Source: https://appshunter.io/ios/app/roe-calculator/id6443583117 (this page in markdown: same URL + `.md`) - Developer: [ROE Visual Co., Ltd](https://appshunter.io/developer/966467215) - Category: Utilities - Price: Free - Rating: 4.00/5 from 1 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 15.1 · 29 MB - Languages: English - Released: 2023-11-14 - Data updated: 2026-06-01 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/roe-calculator/id6443583117/reviews.md ## What is ROE Calculator? 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. ## Key features - Ballast calculation - Pixel and resolution calculation - Power requirement analysis - Technical calculations for LED screens - On-site and preparation tools ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/roe-calculator/id6443583117/reviews.md ### 4/5 — Great app, not perfect *2024-08-08* This is a great app and I use it daily. I am a very visual person and it is a great help in figuring cable paths and gear counts. The one thing I wish it had was the ability to add multiple rows of half tiles to a wall instead of one. Seems silly maybe, but a half tile is not just half the weight or half the power of a full tile, and it would be great to have better tools to calculate when having to use two rows of halfs to make a single row worth of fulls because of inventory. **Developer response:** Hi, thank you for your feedback! We have just released a new version with many improvements and new functionality which I think you'll like! We have noted your feedback and will look at implementing this as a feature. One technical side note, half panels also tend to have a slightly different structural limit, making the maximum hanging limit harder to calculate for a mixed setup. But that is of course only more reason to implement this. Thank you! ## Frequently asked questions about ROE Calculator ### What is ROE Calculator used for? ROE Calculator is used to perform essential technical calculations for LED screens. This includes functions like ballast calculation, pixel and resolution calculations, and power requirement analysis, making it a comprehensive tool for LED technicians. ### Is ROE Calculator free to use? Yes, ROE Calculator is available for free. There are no costs associated with downloading or using its features, and it does not offer in-app purchases. ### What devices does ROE Calculator support? ROE Calculator is designed for Apple devices and is supported on iPhone, iPad, and iPod. It is not currently available for Android or other operating systems. ### How often is ROE Calculator updated? The app was last updated on June 12, 2025, with version V2.1.1. This indicates a recent update, suggesting ongoing development and support from the developer. ### What is the age rating for ROE Calculator? ROE Calculator has an age rating of 4+. This means it is suitable for users aged 4 and above, with no mature content concerns. ### Does ROE Calculator have ads? No, ROE Calculator does not contain advertisements. The app is ad-free, providing an uninterrupted user experience for its technical calculations. ### Who developed ROE Calculator? ROE Calculator was developed by ROE Visual Co., Ltd. They are the company behind this specialized utility application for LED screen technology. ### What are the key features of ROE Calculator? Key features include ballast calculation, pixel and resolution calculation, and power requirement analysis. It aims to be an ultimate tool for LED technicians in various stages of production. ## Version history (last 5 releases) ### V2.1.1 — 2025-06-12 Minor bug fix relating to skip fuctionality ### 2.1.0 — 2025-06-07 V2.1.0 added custom processor template and numerous small improvements and bug fixes. ### 2.0.2 — 2025-05-16 V2.0 brings many new features, improvements and fixes! Check the release notes in the app for more details. ### 2.0.0 — 2025-05-11 V2.0.0 brings many new features, improvements and fixes! Check the release notes in the app for more details. ### 1.11.0 — 2024-05-15 New Features: -Added a three-phase power explanation pop-up under power results -Added suggested minimum viewing distance for audience under general results And many more improvements! For more details, view the release notes in the calculator! ## Apps similar to ROE Calculator | App | Rating | Price | Category | | --- | --- | --- | --- | | [Applausemeter (clap-o-meter)](https://appshunter.io/ios/app/applausemeter-clap-o-meter/id1218106529) | 2.3 (3) | Free | Utilities | | [VNNOX Care](https://appshunter.io/ios/app/vnnox-care/id6449488021) | 2.5 (4) | Free | Utilities | | [QuickQ Remote Control](https://appshunter.io/ios/app/quickq-remote-control/id1434389268) | 4.4 (7) | Free | Utilities | | [ShowTool LD](https://appshunter.io/ios/app/showtool-ld/id319523749) | 4.6 (5) | $4.99 | Utilities | | [piXedid](https://appshunter.io/ios/app/pixedid/id1513186628) | 4.0 (1) | Free | Utilities | | [LTC-Generator](https://appshunter.io/ios/app/ltc-generator/id1467829287) | 1.7 (6) | Free | Utilities | ## More apps by ROE Visual Co., Ltd - [ROE Scanner](https://appshunter.io/ios/app/roe-scanner/id6444835025) All apps by ROE Visual Co., Ltd: https://appshunter.io/developer/966467215 ## Related topics [roe calculator](https://appshunter.io/ios/topics/roe-calculator) · [fidoled](https://appshunter.io/ios/topics/fidoled) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*