# ZipGrade vs Harmony PBA/RP

The clearest difference is in-app purchases: Harmony PBA/RP at none against ZipGrade's 1. ZipGrade's advantage is iOS requirement (13.0 vs 16.4). On price, update cadence, ads and device support there is nothing between them.

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

ZipGrade ships an update every 6 weeks, Harmony PBA/RP every 2 months. Both last shipped on October 15, 2026.

## The numbers

| Metric | ZipGrade | Harmony PBA/RP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (36K ratings)](https://appshunter.io/ios/app/zipgrade/id635077270/reviews)** | — |
| Number of ratings | **36K** | — |
| Positive reviews | 86.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 30 MB | 41 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ZipGrade LLC](https://appshunter.io/developer/582826575) | [Harmony Public Schools](https://appshunter.io/developer/957353321) |

## 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


### Harmony PBA/RP

[App page](https://appshunter.io/ios/app/harmony-pbarp/id6791311754)

**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 Harmony PBA/RP free?

Harmony PBA/RP is free to download, with no in-app purchases.

### Do ZipGrade or Harmony PBA/RP have ads?

Neither ZipGrade nor Harmony PBA/RP shows ads.

### Which is updated more often, ZipGrade or Harmony PBA/RP?

ZipGrade ships an update every 6 weeks, and Harmony PBA/RP every 2 months. Most recently, ZipGrade was updated on October 15, 2026 and Harmony PBA/RP on October 15, 2026.

---

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