VideoCalc vs ProjectorCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VideoCalc
Design home theaters with ease using this comprehensive tool. It simplifies complex calculations for screen dimensions, projector placement, and viewing angles, ensuring optimal system performance and adherence to industry standards.
- Screen dimension calculation
- Projector placement and throw ratio
- Anamorphic lens simulation
- Luminance and screen size calculation
- Field of view angle validation
- Imperial and metric unit support
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VideoCalc is The tool that will help you design Home Theaters in a consistent, quick and easy way. It makes all the tedious calculations a breeze and ensures you can get the desired information in an intuitive way. This is a must have for Home Theater enthusiasts, custom installers, video professionals and more. VideoCalc is made up of several tools, that each in its own right provide you with essential calculations but do work together, ensuring the effect of every component on the system is taken into account. Furthermore the tools are organized in a natural progression, guiding you through the process of designing a Home Theater that follows the industry best practices and standards. Start by defining your screen. The tool allows easy calculation of any screen dimension based on the others. Support for usual aspect ratios is provided, allowing you to pick amongst a selection of the most commonly used aspects. For a projection system, the next step tackles the projector part, defining the aspect ratio of the matrix and the optional usage of an anamorphic lens. The tool shows you how the image will fit within the defined screen and the deformation that the anamorphic lens would apply to the projected image. This is also a fantastic tutorial tool to understand anamorphic systems. The next step takes care of projector placement and/or selection in regards to the throw ratio requirements. Enter the throw ratio range of your projector and check it can be placed to work with your screen. Alternatively, enter the distance from the screen where you wish to place your projector and the tool computes the required throw ratio. This is perfect for selecting your lens on higher-end projectors. The Luminance tab allows to find out how big the screen can be with a given projector or how bright your projector must be to light up the defined screen, while respecting the industry best practices. With the Angle tab, validate that your field of view is in accordance with industry accepted standards such as THX or SMPTE. VideoCalc works in both imperial and metric units. Simply swipe down to reveal the unit selection view, giving you the choice between centimeters, meters, inches and feet. If you like this tool, be sure to also check AudioCalc, the companion tool addressing your audio needs.
ProjectorCalc
This utility app helps lighting technicians and projectionists calculate projected image dimensions. It determines image width, height, diagonal length, brightness, area, and pixel density based on projector and location details. It also estimates keystone distortion.
- Calculate image width, height, and diagonal length
- Determine brightness in Nits
- Calculate total projected area
- Compute pixels per inch
- Estimate keystone distortion
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Winner of the 2010 Live Design Projection Product of the Year - Software/App Category ProjectorCalc is a program for professional lighting technicians and projectionists. Its primary purpose is to determine the size of a projected image given various information about the projector and it's location. ProjectorCalc allows users to enter details for a projector and its location in relation to a projection surface. ProjectorCalc will calculate image width, image height, diagonal length, brightness in Nits, total projected area, and how many pixels per inch the projected image will be. Additionally, ProjectorCalc can give you an estimate of how much keystone distortion will occur by calculating the length of each side of the distorted image.
Screenshots
Verdict
VideoCalc and ProjectorCalc both sit at 5.0 stars, but that hides the real split: 82% of VideoCalc's written reviews are positive against 38% of ProjectorCalc's. VideoCalc also leads on update cadence (every 7 months vs every 49 months) and iOS requirement (7.1 vs 9.2). ProjectorCalc's advantage is price ($2.99 vs $3.99). On rating, ratings volume, 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
VideoCalc costs $3.99 and ProjectorCalc $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for VideoCalc against 5.0 for ProjectorCalc. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews are what separate them: 82% of VideoCalc's written reviews are positive against 38% of ProjectorCalc's.
VideoCalc ships an update every 7 months, ProjectorCalc every 49 months. Both last shipped on October 7, 2026.
| Parameter | VideoCalc | ProjectorCalc |
|---|---|---|
| Price | $3.99 | $2.99 — better |
| Rating | 5.0 (5 ratings) | 5.0 (2 ratings) |
| Positive reviews | 81.8% of reviews — better | 37.5% of reviews |
| Number of ratings | 5 — better | 2 |
| Update frequency | Every 7 months — better | Every 49 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 7.1 — better | 9.2 |
| Further details — not scored | ||
| Size | 3 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Nelcea | D!HV Lighting |
Customer experience
VideoCalc
ProjectorCalc
In-app purchases
VideoCalc
No in-app purchases
ProjectorCalc
No in-app purchases









