# WD Purple Storage Calculator > Calculates required storage capacity for security camera systems. (iPhone/iPad app by Bsharp Sales Enablers LLC.) - Source: https://appshunter.io/ios/app/wd-purple-storage-calculator/id1326868332 (this page in markdown: same URL + `.md`) - Developer: [Bsharp Sales Enablers LLC](https://appshunter.io/developer/990579984) - Category: Utilities, Productivity - Price: Free - Rating: 4.90/5 from 62 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 18.5 · 3 MB - Languages: American English, Arabic, European Portuguese, European Spanish, Chinese (Traditional, Taiwan) - Released: 2017-12-19 - Data updated: 2026-06-01 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/wd-purple-storage-calculator/id1326868332/reviews.md ## What is WD Purple Storage Calculator? WD Purple™ Storage Calculator App How much storage does your smart security system need? The WD Purple Storage Calculator app takes your input and calculates the ideal capacity for your application. microSD™ cards Some key considerations for microSD cards are video resolution, frame rate, minimum video length to retain, and how much endurance is needed. High-res video and higher frame rate increase your capacity need. If your camera is difficult to reach, greater endurance allows you to replace the card less often. Hard Disk Drives For network video recorders (NVRs), you’ll want to factor in number of cameras, resolution, frame rate, video quality, and how much video you want to retain (and more). Once you plug in these parameters, you can see the recommended total storage required. This Surveillance Storage Capacity Estimator tool (Storage Calculator) is provided for illustrative purposes only. Total Storage Capacity is calculated based on parameters selected in the tool, typical compression ratios determined solely by WD for MJPEG, H.264, and H.265 video formats and color depth based on 30 bits for 4K resolution and 16 bits for all other resolutions. Storage capacity needs may vary depending on actual number of cameras connected, days of storage required, video format, compression ratio, camera resolution, frames per second, color depth, system capabilities, components, hardware, configurations, settings, and software, and other factors. Western Digital, the Western Digital logo, and WD Purple are registered trademarks or trademarks of Western Digital Corporation or its affiliates in the US and/or other countries. All other marks are the property of their respective owners. ## Key features - Calculate microSD card storage needs - Estimate hard disk drive capacity for NVRs - Factor in video resolution and frame rate - Determine storage based on retention days - Supports various video compression formats ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/wd-purple-storage-calculator/id1326868332/reviews.md ### 5/5 — Surveillance HDD *2024-04-12, version 3.1.1* Hi, We are using surveillance HDF for all our projects and we are happy with product and service. We recommend to use WD HDD for all surveillance projects. ### 5/5 — Excellent app *2018-08-19, version 1.2.0* Brilliant app to assist SI community to aid storage calculation while selling solutions to their consumers ## Frequently asked questions about WD Purple Storage Calculator ### How does WD Purple Storage Calculator determine storage needs? WD Purple Storage Calculator uses your input on parameters like video resolution, frame rate, and retention days to estimate the required storage capacity for microSD cards or hard disk drives. ### What factors does WD Purple Storage Calculator consider for microSD cards? For microSD cards, it considers video resolution, frame rate, minimum video length to retain, and the required endurance for the card. ### What parameters are used to calculate storage for NVRs with WD Purple Storage Calculator? For NVRs, it factors in the number of cameras, resolution, frame rate, video quality, and the desired retention period for the video footage. ### Is WD Purple Storage Calculator available on multiple devices? Yes, WD Purple Storage Calculator is available for both iPhone and iPad devices, indicated by its supported devices list. ### How often is WD Purple Storage Calculator updated? The latest version, 3.1.2, was last updated on December 4, 2025, indicating a recent update and ongoing support. ### What is the age rating for WD Purple Storage Calculator? WD Purple Storage Calculator has an age rating of 4+, making it suitable for a wide range of users. ### Does WD Purple Storage Calculator have ads? No, WD Purple Storage Calculator does not contain advertisements. The app is free to use without any ad interruptions. ### What is the user sentiment for WD Purple Storage Calculator? Users have rated WD Purple Storage Calculator highly, with an average of 4.9 stars from 62 ratings, suggesting strong user satisfaction. ## Version history (last 5 releases) ### 3.1.2 — 2025-12-04 Redesigned User Interface. ### 3.1.1 — 2023-10-26 Bug fix ### 3.1.0 — 2020-12-30 Introducing a new language "Chinese (Traditional)" ### 3.0 — 2020-08-13 Introducing a new feature "Resources". Major changes for SD Card Storage calculation and SD Card longevity calculation. ### 2.2.1 — 2019-09-18 Calculation fix. 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User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*