# Qalculator > Specialized calculation utility for film, TV, theatre, and event industry professionals. (iPhone/iPad app by QConcept GmbH & Co. KG.) - Source: https://appshunter.io/ios/app/qalculator/id639592437 (this page in markdown: same URL + `.md`) - Developer: [QConcept GmbH & Co. KG](https://appshunter.io/developer/639592440) - Category: Utilities, Productivity - Price: $2.99 - Rating: 5.00/5 from 5 App Store ratings · 20 written reviews indexed - Age rating: 4+ - Requires: iOS 15.6 · 2 MB - Languages: American English - Released: 2013-04-30 - Data updated: 2026-07-17 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/qalculator/id639592437/reviews.md ## What is Qalculator? Qalculator is a convenient tool for media professionals. Qalculator offers a variety of different calculation tools and utilities all of which are made for tasks often performed within the Film-/TV-, Theatre- and Event Industry. This includes: - Lighting Beam Calculation - Projection Tools - Camera Tools - Audio Tools - Tap BPM - Display Size - DIP Switches - Bandwidth Calculation - Frames To Time This app is designed for professionals such as Sound Engineers, Audio Technicians, Lighting Designers, Lighting Technicians, Lighting Operators, Video Engineers, Video Technicians, Camera Men, Camera Technicians and many more. How big will the projected image be if I use a lens factor of 1,5:1 and have my projector at 32' 5" distance from the screen? Qalculator will help! Want to know which focal length you need to get a close up shot? Qalculator assists you. Ever wanted to know how wide a 103" Screen is? Qalculator delivers the solution at your fingertip. Feedback and feature requests are very welcome! Qalculator does: - Lighting beam diameter calculation - Lighting beam object distance calculation - Video projector image size calculation - Video projection lens factor for given image size and projection distance - Video projection distance for given image size and lens factor - Video projection approximate brightness calculation (lux/fc) - Camera distance for given focal length and field of view - Camera focal length for given distance and field of view - Camera field of view for given object distance and focal length - Camera chip size selector for a variety of different chip sizes - Audio delay time for given distance with respect to temperature - Audio wavelengths and travel times for given frequency with respect to temperature - Audio find phase offset and delay for instance for bass speaker arrays - Display Size calculates the complete dimensions for diagonal screen sizes - Tap BPM tap to calculate the average beats per minute - DIP Switches for DMX addressing of DIP switch based devices - DIP Switch offset to step through the DMX address fixture per fixture - Transfer time calculation for a given file size and bandwidth … and more. ## Key features - Lighting beam calculations - Projection tools - Camera distance and focal length calculations - Audio delay and phase offset calculations - Display size and bandwidth calculations - Tap BPM and DIP switch utilities ## Recent user reviews (10 of 20) All indexed reviews: https://appshunter.io/ios/app/qalculator/id639592437/reviews.md ### 5/5 — Gut! *2022-10-18* Super hilfreiches Tool! ### 5/5 — Top *2022-10-13* Ich nutze die App gerne und häufig. Hat auf jeden Fall nützliche Helferlein… ### 5/5 — Danke! *2020-09-10* ... super App. ### 5/5 — Super geiles Teil! *2019-10-01* Gut zu gebrauchen. ### 5/5 — Super! *2017-11-08* Für die Eventbranche ein super hilfreiches Tool. ### 3/5 — Eigentlich gut *2015-11-10* Eigentlich eine coole App. Leider lässt sie sich nicht mehr starten. Auch nach Neuinstallation nicht. **Developer response:** Hallo! Es gibt jetzt eine neue Version der App. Bitte einmal prüfen, ob die Bewertung so noch stimmt "lässt sich nicht installieren". Wir würden uns freuen wenn's doch klappt! ### 5/5 — Nützliche App *2014-12-23* Diese App ist für jeden Veranstaltungstechniker etwas ### 4/5 — Geil *2014-11-11* Hat mir schon sehr bei meiner Arbeit geholfen !!!! danke , tolles tool ### 5/5 — Alles was man braucht vereint! *2014-11-08* Beste APP, die alle wichtigen Funktionen bestens bedienbar vereint! ### 5/5 — Tolle, nützliche App... *2014-11-04* Wirklich sehr hilfreiches Tool für die Veranstaltungsbranche! ## Frequently asked questions about Qalculator ### What is Qalculator used for? Qalculator is a specialized utility app designed for media professionals. It offers a variety of calculation tools for tasks commonly performed in the film, TV, theatre, and event industries, such as lighting beam diameter, projection image size, and audio delay times. ### Who is the target audience for Qalculator? The app is specifically designed for professionals working in the media industry. This includes roles like sound engineers, audio technicians, lighting designers, lighting technicians, video engineers, camera operators, and other technical staff. ### What types of calculations does Qalculator offer? Qalculator provides a wide range of calculations including lighting beam diameter and object distance, video projector image size and lens factor, camera distance and focal length, audio delay time and wavelengths, display dimensions, BPM tapping, DIP switch settings for DMX addressing, and file transfer times based on bandwidth. ### Is Qalculator available on multiple devices? Yes, Qalculator is supported on iPhone, iPad, and iPod devices, making it accessible to a broad range of Apple users in the industry. ### How often is Qalculator updated? The app was last updated on October 13, 2022, with version 2.3.3. While specific update frequency isn't detailed, this indicates ongoing support and development. ### What is the price of Qalculator? Qalculator is a paid application, available for a one-time purchase of $2.99. It does not feature in-app purchases or advertisements. ### What is the age rating for Qalculator? Qalculator has an age rating of 4+, indicating it is suitable for users of all ages and does not contain mature content. ### Does Qalculator have ads? No, Qalculator is ad-free. Users can utilize all its features without any interruptions from advertisements. ## Version history (last 5 releases) ### 2.3.5 — 2026-06-30 Minor improvements and adjustments ### 2.3.3 — 2022-10-13 minimal improvements for different screen sizes ### 2.3.2 — 2022-10-02 a bugfix ### 2.3.1 — 2022-09-28 New tool: A/V Sync Test. Some minor adaptions for current iOS. ### 2.2.2 — 2019-12-12 - minor bugfix which addresses a crash on certain iPhones ## Apps similar to Qalculator | App | Rating | Price | Category | | --- | --- | --- | --- | | [EventWorx Mobile App](https://appshunter.io/ios/app/eventworx-mobile-app/id6745967641) | — | Free | Utilities | | [s-NIF](https://appshunter.io/ios/app/s-nif/id6740718745) | — | $4.99 | Utilities | | [GenR8](https://appshunter.io/ios/app/genr8/id6751822886) | 4.9 (8) | $19.99 | Utilities | | [GLP iQ.Service](https://appshunter.io/ios/app/glp-iqservice/id1609207414) | — | Free | Utilities | | [LensPro](https://appshunter.io/ios/app/lenspro/id391291572) | 4.4 (21) | $5.99 | Utilities | | [m-BER](https://appshunter.io/ios/app/m-ber/id6740215628) | 5.0 (1) | Free | Utilities | ## More apps by QConcept GmbH & Co. KG - [McFly](https://appshunter.io/ios/app/mcfly/id903698366) All apps by QConcept GmbH & Co. KG: https://appshunter.io/developer/639592440 --- *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 2026-07-17.*