# ProjectorCalc vs iTransfer Pro

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.

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.

## The numbers

| Metric | ProjectorCalc | iTransfer Pro |
| --- | --- | --- |
| Price | **$2.99** | $5.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/projectorcalc/id310342928/reviews)** | [4.2 (81 ratings)](https://appshunter.io/ios/app/itransfer-pro/id592324643/reviews) |
| Number of ratings | 2 | **81** |
| Positive reviews | **37.5% of reviews** | 30.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 49 months | **Every 4 months** |
| Monetization | Paid | Paid |
| Size | 10 MB | 49 MB |
| Requires iOS | **9.2** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [D!HV Lighting](https://appshunter.io/developer/287079053) | [ComcSoft Corporation](https://appshunter.io/developer/413971334) |

## What reviewers say

### ProjectorCalc

[App page](https://appshunter.io/ios/app/projectorcalc/id310342928)

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.

**Highlights:** Calculate image width, height, and diagonal length, Determine brightness in Nits, Calculate total projected area, Compute pixels per inch, Estimate keystone distortion

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### iTransfer Pro

[App page](https://appshunter.io/ios/app/itransfer-pro/id592324643)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ProjectorCalc free?

ProjectorCalc costs $2.99, with no in-app purchases.

### Is iTransfer Pro free?

iTransfer Pro costs $5.99, with no in-app purchases.

### Which has better reviews, ProjectorCalc or iTransfer Pro?

ProjectorCalc is rated higher. ProjectorCalc averages 5.0 out of 5 from 2 ratings, while iTransfer Pro averages 4.2 from 81 ratings.

### Do ProjectorCalc or iTransfer Pro have ads?

Neither ProjectorCalc nor iTransfer Pro shows ads.

### Which is updated more often, ProjectorCalc or iTransfer Pro?

ProjectorCalc ships an update every 49 months, and iTransfer Pro every 4 months. Most recently, ProjectorCalc was updated on October 7, 2026 and iTransfer Pro on October 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*