BYB Backpack vs PPQR
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BYB Backpack
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.
- Remote TTL signal generation
- Control two independent square-wave pulses
- Adjustable frequency
- Adjustable pulse width
- Adjustable duration
- Requires BYB remote signal generator hardware
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BYB Backpack is an educational wireless stimulus generator developed by Backyard Brains. Connect to a BYB Backpack board over Bluetooth, choose a preset frequency, or configure frequency, pulse width, duration, gain, and random mode. A compatible board is required. Original device development was supported by the National Institute of Mental Health, NIH (award R43MH093334).
PPQR
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PPQR is an online attendance recording service provided by Sri Technocrat. The service is free of any commercial messages or advertisements. 1. This app is used by students of multiple institutes. 2. Students of any new institute can become a user after registration. 3. No App features are intended for use by the general public. 4. Student account can be created by their own institutes. 5. No paid content.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | BYB Backpack | PPQR |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 11 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.1 | 8.0 — better |
| Further details — not scored | ||
| Size | 27 MB | 41 MB |
| Age rating | 4+ | 17+ |
| Developer | Backyard Brains | Girish Mathur |
In-app purchases
BYB Backpack
No in-app purchases
PPQR
No in-app purchases
