# ClassDojo vs PS 33 Chelsea Prep

The clearest difference is in-app purchases: PS 33 Chelsea Prep at none against ClassDojo's 10. PS 33 Chelsea Prep also leads on iOS requirement (13.0 vs 18.0). ClassDojo's advantage is update cadence (every 2 days vs every 3 weeks) and ratings volume (4.1M vs 1). On price, rating, ads and device support there is nothing between them.

Both are free to download. ClassDojo sells 9 in-app purchases, starting at $6.99 per month. PS 33 Chelsea Prep asks for nothing beyond the download.

PS 33 Chelsea Prep holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: ClassDojo has 4.1M ratings behind it against 1, so its average is the more settled of the two.

ClassDojo ships an update every 2 days, PS 33 Chelsea Prep every 3 weeks. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | ClassDojo | PS 33 Chelsea Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (4.1M ratings)](https://appshunter.io/ios/app/classdojo/id552602056/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ps-33-chelsea-prep/id1566823054/reviews)** |
| Number of ratings | **4.1M** | 1 |
| Positive reviews | 68.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#5** | — |
| Size | 222 MB | 70 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ClassDojo, Inc.](https://appshunter.io/developer/552602059) | [PS 33](https://appshunter.io/developer/1566823206) |

## What reviewers say

### ClassDojo

[App page](https://appshunter.io/ios/app/classdojo/id552602056)

**Currently charting:** #5 Top Grossing · Education, #13 Top Free · Education, #178 Top Grossing (US App Store)

This platform connects teachers, parents, and students to foster positive classroom communities. It facilitates communication, shares updates like photos and videos, and provides engaging learning content for children. The goal is to make education more enjoyable and keep everyone informed about school activities.

**Highlights:** Safe teacher-parent communication, Photo and video updates from teachers, Fun learning content for kids, School news and updates, Positive behavior management tools, Progress sharing

**Features:** macOS Compatibility, iMessage stickers, Vision Pro support, iPhone Duo support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ClassDojo Plus Basic | $6.99 | per month |
| ClassDojo Plus Basic | $7.99 | per month |
| ClassDojo Plus Basic | $7.99 | per month |
| ClassDojo Plus Basic | $8.99 | per month |
| Dojo Sparks | $9.99 | per month |
| ClassDojo Plus Basic | $9.99 | per month |
| ClassDojo Plus Basic | $9.99 | per month |
| ClassDojo Plus Basic | $10.99 | per month |
| ClassDojo Plus Basic | $69.99 | per year |

**What reviewers like**

- 🚀 Great communication tool
- 👍 Useful for behavior management
- 💡 Allows sharing of student work and progress
- 👍 Facilitates parent-teacher interaction
- 👍 Customizable point system

**What reviewers complain about**

- 🐛 Notification issues
- 🔒 Privacy concerns with sharing student information
- 💰 Paid features are required for full functionality
- 🤔 Cluttered interface with too many irrelevant posts
- 🤔 Difficult to navigate and find specific information

**Reported bugs**

- Inconsistent notification delivery
- Progress data disappearing or resetting
- Difficulties with uploading and sharing content

**Requested features**

- Ability to download student photos and work
- Option to filter and unfollow posts not relevant to a student
- Improved search and organization of posts
- Scheduling feature for posting class updates
- Ability to send group messages to other parents


### PS 33 Chelsea Prep

[App page](https://appshunter.io/ios/app/ps-33-chelsea-prep/id1566823054)

This app connects parents, students, teachers, and administrators with school news, event calendars, and online resources. It provides quick access to important information and tools to keep the school community informed and engaged.

**Highlights:** School news updates, Event calendars, Interactive resources, Online resource access, Community connection

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ClassDojo free?

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

### Is PS 33 Chelsea Prep free?

PS 33 Chelsea Prep is free to download, with no in-app purchases.

### Which has better reviews, ClassDojo or PS 33 Chelsea Prep?

PS 33 Chelsea Prep is rated higher. ClassDojo averages 4.8 out of 5 from 4.1M ratings, while PS 33 Chelsea Prep averages 5.0 from 1 ratings.

### Do ClassDojo or PS 33 Chelsea Prep have ads?

Neither ClassDojo nor PS 33 Chelsea Prep shows ads.

### Which is updated more often, ClassDojo or PS 33 Chelsea Prep?

ClassDojo ships an update every 2 days, and PS 33 Chelsea Prep every 3 weeks. Most recently, ClassDojo was updated on November 11, 2026 and PS 33 Chelsea Prep on November 3, 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.*