ProjectorCalc vs iTransfer Pro
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.
iTransfer Pro
Easily transfer files between your device and cloud storage services like Dropbox, Box, and Google Drive. Supports FTP, SFTP, and FTPS servers with advanced authentication options. Manage, view, and share your documents and media files efficiently.
- Cloud drive integration (Dropbox, Box, OneDrive, Google Drive)
- FTP, SFTP, FTPS server support
- Private key authentication for SFTP
- File management (add, search, rename, move, delete)
- View and open various file types
- Email and share files
- Password protection
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iTransfer Pro is the Pro Version of iTransfer, the No. 1 App for file transfer on iPhone/iPad. Besides all the features available on iTransfer, the Pro Version has more features, which are essential to business and professional users, including Dropbox, Box, OneDrive, and GoogleDrive access. Supported features include: 1. Download files from your iCloud Drive. Save local files to iCloud Drive. 2. Upload/download files to/from FTP/SFTP/FTPS servers, DropBox, Box, OneDrive, and GoogleDrive. 3. Support both user name/password and Private Key authentication for SFTP. Support both PPK and PEM keys. Support importing keys from/exporting keys to iCloud Drive under iTransfer/keys folder. 4. Email files. 5. Manage files, including adding a folder, searching, renaming, moving or deleting files. 6. View supported files, including: PDF, DOC, EXCEL, PPT, image files, TXT, etc. 7. Open files using other Apps through “Open in”. 8. Play photo slideshows. 9. Playback music and videos. 10. Support launching with a password. 11. Print documents. 12. Share photos on Facebook, Twitter and Weibo. With its simple interfaces, iTransfer Pro provides the easiest way to transfer files on iPhone and iPad. If you have any questions, please visit: http://www.comcsoft.com/Portfolio/our_apps/iTransfer/iTransfer_overview.php.
Screenshots
Verdict
The clearest difference is rating: ProjectorCalc at 5.0 against iTransfer Pro's 4.2. ProjectorCalc also leads on price ($2.99 vs $5.99) and iOS requirement (9.2 vs 15.0). iTransfer Pro's advantage is update cadence (every 4 months vs every 49 months) and ratings volume (81 vs 2). On review sentiment, ads, in-app purchases and monetization model 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 iTransfer Pro $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 4.2. That said, the two scores are not equally well evidenced: iTransfer Pro has 81 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 38% of ProjectorCalc's written reviews are positive against 31% of iTransfer Pro's.
ProjectorCalc ships an update every 49 months, iTransfer Pro every 4 months. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.
| Parameter | ProjectorCalc | iTransfer Pro |
|---|---|---|
| Price | $2.99 — better | $5.99 |
| Rating | 5.0 (2 ratings) — better | 4.2 (81 ratings) |
| Positive reviews | 37.5% of reviews — better | 30.9% of reviews |
| Number of ratings | 2 | 81 — better |
| Update frequency | Every 49 months | Every 4 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 | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | D!HV Lighting | ComcSoft Corporation |
Customer experience
ProjectorCalc
iTransfer Pro
In-app purchases
ProjectorCalc
No in-app purchases
iTransfer Pro
No in-app purchases
Questions
Is ProjectorCalc free?
Is iTransfer Pro free?
Which has better reviews, ProjectorCalc or iTransfer Pro?
Do ProjectorCalc or iTransfer Pro have ads?
Which is updated more often, ProjectorCalc or iTransfer Pro?
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