ProjectorCalc vs Proietta
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
Read full descriptionHide full description
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.
Proietta
Read full descriptionHide full description
This app connects via Bluetooth to our controlling board for our external projector, you can monitor temperatures and fan speed
Screenshots
Verdict
The clearest difference is price: Proietta at Free against ProjectorCalc's $2.99. ProjectorCalc's advantage is iOS requirement (9.2 vs 11.0). On update cadence, 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
Proietta is free to download; ProjectorCalc costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ProjectorCalc ships an update every 49 months, Proietta every 58 months. The most recent releases landed on October 7, 2026 and October 5, 2026 respectively.
| Parameter | ProjectorCalc | Proietta |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 37.5% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 49 months — better | Every 58 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 9.2 — better | 11.0 |
| Further details — not scored | ||
| Size | 10 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | D!HV Lighting | Marco Piai |
In-app purchases
ProjectorCalc
No in-app purchases
Proietta
No in-app purchases
