# ZipGrade vs Promethean

The clearest difference is review sentiment: ZipGrade at 86% against Promethean's 18%. ZipGrade also leads on rating (4.9 vs 2.5) and ratings volume (36K vs 59). Promethean's advantage is in-app purchases (none vs 1). On price, ads and device support there is nothing between them.

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

ZipGrade holds the better App Store score, 4.9 against 2.5. That said, the two scores are not equally well evidenced: ZipGrade has 36K ratings behind it against 59, so its average is the more settled of the two. Written reviews point the same way: 86% of ZipGrade's written reviews are positive against 18% of Promethean's.

ZipGrade ships an update every 6 weeks, Promethean every 4 months. The most recent releases landed on September 24, 2026 and August 19, 2026 respectively.

## The numbers

| Metric | ZipGrade | Promethean |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (36K ratings)](https://appshunter.io/ios/app/zipgrade/id635077270/reviews)** | [2.5 (59 ratings)](https://appshunter.io/ios/app/promethean/id1447288595/reviews) |
| Number of ratings | **36K** | 59 |
| Positive reviews | **85.7% of reviews** | 17.6% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 30 MB | 66 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ZipGrade LLC](https://appshunter.io/developer/582826575) | [Promethean](https://appshunter.io/developer/321367877) |

## 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


### Promethean

[App page](https://appshunter.io/ios/app/promethean/id1447288595)

This app facilitates classroom collaboration by allowing students and teachers to interact with interactive panels wirelessly. IT administrators can also manage panel enrollment and updates. It offers screen sharing and access to training resources.

**Highlights:** Wireless screen sharing, Panel management for IT admins, Access to training materials, Student-teacher interaction, Panel enrollment and naming

**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 Promethean free?

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

### Which has better reviews, ZipGrade or Promethean?

ZipGrade is rated higher. ZipGrade averages 4.9 out of 5 from 36K ratings, while Promethean averages 2.5 from 59 ratings.

### Do ZipGrade or Promethean have ads?

Neither ZipGrade nor Promethean shows ads.

### Which is updated more often, ZipGrade or Promethean?

ZipGrade ships an update every 6 weeks, and Promethean every 4 months. Most recently, ZipGrade was updated on September 24, 2026 and Promethean on August 19, 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.*