Piazza vs Purdue CS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Piazza
This platform facilitates communication and learning for higher education. Students can ask and answer questions, while instructors can monitor student engagement. It provides real-time updates and a centralized space for class interactions.
- Ask and answer questions
- Real-time updates
- Centralized class communication
- Student engagement monitoring
- Mobile access for students and instructors
Read full descriptionHide full description
Piazza is the leading social learning platform for higher education, used by hundreds of thousands of students and more than 15 thousand professors for centralized class communications and polling. If you're a student, the Piazza app lets you ask and answer questions in all your Piazza classes from your mobile device, and updates you in real time when your peers are engaged. If you're an instructor, the app gives you a simple way to check in on your students during those spare moments between meetings. Stay connected to your class with Piazza!
Purdue CS
This app connects Computer Science students at Purdue University with events and resources. Follow student organizations, get event notifications, and view lab availability. It also provides access to department resources and opportunity updates.
- Follow CS student organizations
- Receive event notifications
- View Computer Science opportunity updates
- Live lab availability view
- Access common department resources
Read full descriptionHide full description
This is the app for students in Computer Science at Purdue University or for those wanting to get involved in events by students organizations in CS. It offers a simple interface with the ability to follow events, view the Computer Science opportunity update and get resources like a live view of the Lawson and Haas labs to check for availabilities. Upcoming Events: Add the CS organizations at Purdue you want to be involved with and follow their upcoming events. Choose to get event notifications 30 minutes before they begin to make sure you don't miss out on any events by student organizations. Opportunity Update: View the opportunity update all on one page. View the sections you are interested in and check back periodically for new updates. Resources: View a live image of labs in Lawson and Haas and access common resources in the Computer Science department. Note: Not an official Purdue app. Developed by Students, for Students, at Purdue University. We'd love to hear your thoughts! Send us feedback in-app for features and improvements.
Screenshots
Verdict
The clearest difference is review sentiment: Purdue CS at 100% against Piazza's 14%. Purdue CS also leads on rating (4.8 vs 2.1) and iOS requirement (13.0 vs 15.6). Piazza's advantage is update cadence (every 11 days vs every 4 months) and ratings volume (279 vs 13). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Purdue CS holds the better App Store score, 4.8 against 2.1. That said, the two scores are not equally well evidenced: Piazza has 279 ratings behind it against 13, so its average is the more settled of the two. Written reviews point the same way: 14% of Piazza's written reviews are positive against 100% of Purdue CS's.
Piazza ships an update every 11 days, Purdue CS every 4 months. The most recent releases landed on October 14, 2026 and September 22, 2026 respectively.
| Parameter | Piazza | Purdue CS |
|---|---|---|
| Price | Free | Free |
| Rating | 2.1 (279 ratings) | 4.8 (13 ratings) — better |
| Positive reviews | 14.2% of reviews | 100.0% of reviews — better |
| Number of ratings | 279 — better | 13 |
| Update frequency | Every 11 days — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Piazza Technologies, Inc. | Pallav Agarwal |
Customer experience
Piazza
Purdue CS
Bugs and requests
Piazza
Reported bugs
4 issues- Inability to post or reply
- Randomly logs out users
- Fails to load posts and resources
- Incompatible with newer iOS versions
Requested features
5 requests- Dark mode option
- Ability to access course materials
- Improved formatting and editing tools
- Better organization of posts and discussions
- Seamless integration with web version
Purdue CS
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Piazza
No in-app purchases
Purdue CS
No in-app purchases









