# ProjectorCalc vs s

The clearest difference is price: s at Free against ProjectorCalc's $2.99. ProjectorCalc's advantage is in-app purchases (none vs 2) and iOS requirement (9.2 vs 18.2). On ads and device support there is nothing between them.

s is free to download; ProjectorCalc costs $2.99 up front. s sells 2 in-app purchases, starting at $0.99 per month. ProjectorCalc asks for nothing beyond the download.

## The numbers

| Metric | ProjectorCalc | s |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/projectorcalc/id310342928/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 37.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 49 months | — |
| Monetization | Paid | — |
| Size | 10 MB | 1 MB |
| Requires iOS | **9.2** | 18.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [D!HV Lighting](https://appshunter.io/developer/287079053) | [Lawrence Anthony Ware](https://appshunter.io/developer/1788973624) |

## 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


### s

[App page](https://appshunter.io/ios/app/s-how/id6740733613)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 31 Days Access to s-HOW app | $0.99 | per month |
| Access s-HOW app Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is ProjectorCalc free?

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

### Is s free?

s is free to download, with in-app purchases available.

### Do ProjectorCalc or s have ads?

Neither ProjectorCalc nor s shows ads.

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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.*