ProjectorCalc vs ScreenGlow Mobile
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
ScreenGlow Mobile
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Fully functional tool for filmmakers to use their iOS device screen as a lighting device. Useful for both Illumination from the display and to use as a screen chroma key. Modes include CCT, RGB, HSL, Party FX, TV FX, and DMX-Control via Art-Net or sACN traffic on the connected network.
Screenshots
Verdict
The clearest difference is update cadence: ScreenGlow Mobile at every 10 days against ProjectorCalc's every 49 months. ProjectorCalc's advantage is price ($2.99 vs $4.99) and iOS requirement (9.2 vs 15.0). On ads, in-app purchases and device support 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
ProjectorCalc costs $2.99 and ScreenGlow Mobile $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ProjectorCalc ships an update every 49 months, ScreenGlow Mobile every 10 days. The most recent releases landed on October 31, 2026 and October 28, 2026 respectively.
| Parameter | ProjectorCalc | ScreenGlow Mobile |
|---|---|---|
| Price | $2.99 — better | $4.99 |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 37.5% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 49 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 9.2 — better | 15.0 |
| Further details — not scored | ||
| Size | 10 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | D!HV Lighting | Canary Yellow Applications, LLC |
In-app purchases
ProjectorCalc
No in-app purchases
ScreenGlow Mobile
No in-app purchases
