# ZipGrade vs BlackSwan Audio

ZipGrade and BlackSwan Audio both sit at 4.9 stars, but that hides the real split: 86% of ZipGrade's written reviews are positive against 0% of BlackSwan Audio's. ZipGrade also leads on update cadence (every 6 weeks vs every 39 months) and ratings volume (37K vs 1). BlackSwan Audio's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 13.0). On price, rating, ads and device support there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.9 for ZipGrade against 5.0 for BlackSwan Audio. That said, the two scores are not equally well evidenced: ZipGrade has 37K ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 86% of ZipGrade's written reviews are positive against 0% of BlackSwan Audio's.

ZipGrade ships an update every 6 weeks, BlackSwan Audio every 39 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ZipGrade | BlackSwan Audio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (37K ratings)](https://appshunter.io/ios/app/zipgrade/id635077270/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/blackswan-audio/id1264522920/reviews)** |
| Number of ratings | **37K** | 1 |
| Positive reviews | **85.9% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 39 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 30 MB | 18 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ZipGrade LLC](https://appshunter.io/developer/582826575) | [FERNUS BILISIM HIZMETLERI EGI.DAN. ve TIC.LTD.STI.](https://appshunter.io/developer/927900317) |

## 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


### BlackSwan Audio

[App page](https://appshunter.io/ios/app/blackswan-audio/id1264522920)

This application provides audio versions of books published by BlackSwan Publishing. It allows users to listen to their favorite titles on the go, making literature accessible through sound.

**Highlights:** Audiobook playback, Access to BlackSwan Publishing titles, On-the-go listening, Literature accessibility

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ZipGrade free?

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

### Is BlackSwan Audio free?

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

### Which has better reviews, ZipGrade or BlackSwan Audio?

BlackSwan Audio is rated higher. ZipGrade averages 4.9 out of 5 from 37K ratings, while BlackSwan Audio averages 5.0 from 1 ratings.

### Do ZipGrade or BlackSwan Audio have ads?

Neither ZipGrade nor BlackSwan Audio shows ads.

### Which is updated more often, ZipGrade or BlackSwan Audio?

ZipGrade ships an update every 6 weeks, and BlackSwan Audio every 39 months. Most recently, ZipGrade was updated on October 27, 2026 and BlackSwan Audio 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.*