Comparison

Piazza vs Purdue CS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Ask and answer questions
  • Real-time updates
  • Centralized class communication
  • Student engagement monitoring
  • Mobile access for students and instructors
Read 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!

About

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.

Highlights
  • Follow CS student organizations
  • Receive event notifications
  • View Computer Science opportunity updates
  • Live lab availability view
  • Access common department resources
Features
Read 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

Piazza3 screens
Purdue CS3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
Piazza versus Purdue CS: the parameters behind the verdict, then further details
ParameterPiazzaPurdue CS
PriceFreeFree
Rating2.1 (279 ratings)4.8 (13 ratings) — better
Positive reviews14.2% of reviews100.0% of reviews — better
Number of ratings279 — better13
Update frequencyEvery 11 days — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.613.0 — better
Further details — not scored
Size3 MB6 MB
Age rating4+4+
DeveloperPiazza Technologies, Inc.Pallav Agarwal

Customer experience

Piazza

All ratings279 ratings
Positive20.8%
Neutral10.0%
Negative69.2%
Written reviews113 reviews
Positive14.2%
Neutral11.5%
Negative74.3%

Purdue CS

All ratings13 ratings
Positive92.3%
Neutral7.7%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

None

Piazza

No in-app purchases

None

Purdue CS

No in-app purchases

Questions

Is Piazza free?
Piazza is free to download, with no in-app purchases.
Is Purdue CS free?
Purdue CS is free to download, with no in-app purchases.
Which has better reviews, Piazza or Purdue CS?
Purdue CS is rated higher. Piazza averages 2.1 out of 5 from 279 ratings, while Purdue CS averages 4.8 from 13 ratings.
Do Piazza or Purdue CS have ads?
Neither Piazza nor Purdue CS shows ads.
Which is updated more often, Piazza or Purdue CS?
Piazza ships an update every 11 days, and Purdue CS every 4 months. Most recently, Piazza was updated on October 14, 2026 and Purdue CS on September 22, 2026.

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