ProjectorCalc vs LensPro
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.
LensPro
This utility app assists projectionists with lens calculations for various projector brands. It maintains an updated database of lens information accessible via the internet.
- Lens calculations
- Supports Barco, Christie, Panasonic, Epson, Benq, Mitsubishi, Optoma, Sony
- Online database updates
- Ideal for projectionists
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LensPro is the ideal companion of every projectionist. Lenspro allows the calculations of lenses: Barco - Christie - Panasonic, Digital Projection, Epson, Benq, Mitsubishi,Optoma,Sony. updating the database via the internet
Screenshots
Verdict
The clearest difference is rating: ProjectorCalc at 5.0 against LensPro's 4.4. ProjectorCalc also leads on price ($2.99 vs $5.99) and iOS requirement (9.2 vs 15.0). LensPro's advantage is review sentiment (76% vs 38%) and update cadence (every 12 months vs every 49 months). On ads, in-app purchases, monetization model 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 LensPro $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ProjectorCalc holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: LensPro has 21 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 38% of ProjectorCalc's written reviews are positive against 76% of LensPro's, so the app with the better star average is not the one people write more warmly about.
ProjectorCalc ships an update every 49 months, LensPro every 12 months. The most recent releases landed on October 7, 2026 and October 5, 2026 respectively.
| Parameter | ProjectorCalc | LensPro |
|---|---|---|
| Price | $2.99 — better | $5.99 |
| Rating | 5.0 (2 ratings) — better | 4.4 (21 ratings) |
| Positive reviews | 37.5% of reviews | 76.5% of reviews — better |
| Number of ratings | 2 | 21 — better |
| Update frequency | Every 49 months | Every 12 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 9.2 — better | 15.0 |
| Further details — not scored | ||
| Size | 10 MB | 113 MB |
| Age rating | 4+ | 4+ |
| Developer | D!HV Lighting | piXap |
Customer experience
ProjectorCalc
LensPro
In-app purchases
ProjectorCalc
No in-app purchases
LensPro
No in-app purchases
