# ZipGrade vs BYB Backpack

The clearest difference is rating: ZipGrade at 4.9 against BYB Backpack's 3.0. ZipGrade also leads on update cadence (every 6 weeks vs every 11 months) and ratings volume (37K vs 2). BYB Backpack's advantage is in-app purchases (none vs 1). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ZipGrade sells 1 one-off in-app purchase. BYB Backpack asks for nothing beyond the download.

ZipGrade holds the better App Store score, 4.9 against 3.0. That said, the two scores are not equally well evidenced: ZipGrade has 37K ratings behind it against 2, so its average is the more settled of the two.

ZipGrade ships an update every 6 weeks, BYB Backpack every 11 months. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ZipGrade | BYB Backpack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (37K ratings)](https://appshunter.io/ios/app/zipgrade/id635077270/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/byb-backpack/id792968848/reviews) |
| Number of ratings | **37K** | 2 |
| Positive reviews | 85.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 11 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 30 MB | 27 MB |
| Requires iOS | **13.0** | 13.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ZipGrade LLC](https://appshunter.io/developer/582826575) | [Backyard Brains](https://appshunter.io/developer/367151203) |

## What reviewers say

### ZipGrade

[App page](https://appshunter.io/ios/app/zipgrade/id635077270)

Instantly grade multiple-choice tests and quizzes using your device's camera. This app offers a fast and accurate way for educators to assess student work, with features for organizing and exporting results. It provides immediate feedback to inform lesson planning and assignments.

**Highlights:** Instant grading with device camera, Supports multiple choice tests and quizzes, Organizes and exports results (PDF, Excel), Free answer sheet templates available, Companion website for data management, Stores results by student, subject, and quiz

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Add 1 year of use | $6.99 | one-time |

**What reviewers like**

- 🚀 Efficient grading
- 👍 Instant feedback for students
- 📊 Detailed data analysis
- 💰 Affordable subscription
- ⏱️ Time-saving

**What reviewers complain about**

- 🐛 Inconsistent scanning issues
- 🔍 Difficulty navigating interface
- 🔢 Lack of class/student grouping options
- 🖼️ Poor image quality for student names

**Reported bugs**

- Scanning issues with flat surface detection
- Incorrect answer marking due to eraser marks

**Requested features**

- Ability to change question point values in bulk
- Option to create/edit answer keys on website
- Support for non-multiple choice question types
- Improved data export/integration with other systems


### 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


## Frequently asked questions

### Is ZipGrade free?

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

### Is BYB Backpack free?

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

### Which has better reviews, ZipGrade or BYB Backpack?

ZipGrade is rated higher. ZipGrade averages 4.9 out of 5 from 37K ratings, while BYB Backpack averages 3.0 from 2 ratings.

### Do ZipGrade or BYB Backpack have ads?

Neither ZipGrade nor BYB Backpack shows ads.

### Which is updated more often, ZipGrade or BYB Backpack?

ZipGrade ships an update every 6 weeks, and BYB Backpack every 11 months. Most recently, ZipGrade was updated on October 30, 2026 and BYB Backpack on October 24, 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.*