# BYB Backpack vs PPQR

The clearest difference is iOS requirement: PPQR at 8.0 against BYB Backpack's 13.1. On price, ads, in-app purchases and device support 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 | BYB Backpack | PPQR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/byb-backpack/id792968848/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | — |
| Monetization | Free | — |
| Size | 27 MB | 41 MB |
| Requires iOS | 13.1 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Backyard Brains](https://appshunter.io/developer/367151203) | [Girish Mathur](https://appshunter.io/developer/1117813658) |

## What reviewers say

### BYB Backpack

[App page](https://appshunter.io/ios/app/byb-backpack/id792968848)

This application allows users to remotely control a two-channel signal generator for TTL signals. It enables the generation of square-wave pulses with adjustable frequency, pulse width, and duration, ideal for electronics projects.

**Highlights:** Remote TTL signal generation, Control two independent square-wave pulses, Adjustable frequency, Adjustable pulse width, Adjustable duration, Requires BYB remote signal generator hardware

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

**In-app purchases:** none


### PPQR

[App page](https://appshunter.io/ios/app/ppqr/id1660740004)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BYB Backpack free?

BYB Backpack is free to download, with no in-app purchases.

### Is PPQR free?

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

### Do BYB Backpack or PPQR have ads?

Neither BYB Backpack nor PPQR shows ads.

---

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