# ViewSonic Projector vs Callback Track

The clearest difference is device support: ViewSonic Projector at 3 against Callback Track's 1. ViewSonic Projector also leads on iOS requirement (12.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | ViewSonic Projector | Callback Track |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (12 ratings)](https://appshunter.io/ios/app/viewsonic-projector/id964378113/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Free | — |
| Size | 22 MB | 2 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [ViewSonic International Corp.](https://appshunter.io/developer/871648106) | [TLP Solutions and Services LLC](https://appshunter.io/developer/6793639818) |

## What reviewers say

### ViewSonic Projector

[App page](https://appshunter.io/ios/app/viewsonic-projector/id964378113)

This app provides comprehensive knowledge for selecting and installing projectors. It offers practical guidance for various settings, helping users determine optimal placement based on room dimensions and desired screen size. Interactive simulations allow for real-time adjustments.

**Highlights:** Projector selection guidance, Installation know-how, Placement distance calculation, Screen size and aspect ratio input, Interactive distance adjustment, Simulation scenarios

**In-app purchases:** none


### Callback Track

[App page](https://appshunter.io/ios/app/callback-track/id6793639816)

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is ViewSonic Projector free?

ViewSonic Projector is free to download, with no in-app purchases.

### Is Callback Track free?

Callback Track is free to download, with no in-app purchases.

### Do ViewSonic Projector or Callback Track have ads?

Neither ViewSonic Projector nor Callback Track 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.*