Comparison

Piazza vs Dah

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
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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

Dah

Learn STEAM and entrepreneurship through engaging gameplay. Explore topics like science, math, and arts while being inspired by the creators' journey. Discover resources for after-school activities and college preparation.

Highlights
  • STEAM and entrepreneurship learning
  • Interactive gaming experience
  • Inspiration from creators' story
  • Resources for after-school activities
  • College preparation guidance
  • Multilingual support
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Introducing Dah-Varsity: Learn STEAM with a Cool Game! Dah-Varsity is a game created by a Black father-son duo, Damola, and Wole Idowu. They co-founded Toyz Electronics. Learn about STEAM (Science, Technology, Engineering, Arts, and Math) and entrepreneurship by gaming! In this game, you'll explore different STEAM topics like cars, math, music, books, space, and creating things. It's a chance for you to learn while playing! You'll also be inspired by Damola and Wole's incredible story. They are both really creative and smart. Damola started studying engineering at 15 at Syracuse. He majored in Mechanical Engineering and Economics at Syracuse University at 16! He won a competition for designing something cool at Howard University when he was 18. Wole graduated from high school at 15. He even appeared on a TV show called "20 Under 20 Transforming Tomorrow" on CNBC. He went to Carnegie Mellon University. He got a degree in Electrical and Computer Engineering and business at 20. Dah-Varsity is a special game that you can play anywhere. It's available in more than 100 languages, so kids all around the world can play it! The idea for the game came from Damola when he was studying at Howard University. He thought of something called Superhero Rap. In Superhero Rap, you imagine a perfect world and use STEAM ideas to solve problems and become a superhero! This game will teach you how to solve problems and think in a smart way that's related to your own life. Dah-Varsity was made at Carnegie Mellon University. You can play it on your phone, TV, computer, and soon on game consoles too! Damola and Wole have taught STEAM to more than 4000 students. They used their experience to make this game even better. When you play Dah-Varsity, you'll also find resources for cool activities you can do after school. You can connect with programs that help you prepare for college. And you'll learn about different jobs that match your interests in STEAM! Join the Dah-Varsity community and get ready for an awesome adventure filled with STEAM! Learn, have fun, and show the world what you can do. Download the app now! Learn more about Toyz Electronics and how they're helping kids in underserved communities. https://www.theesa.com/news/toyz-electronics-changing-the-game-for-kids-in-underserved-communities/ https://www.cbsnews.com/pittsburgh/video/toyzsteam-turning-kids-into-superheroes-through-video-games/ www.toyzelectronics.com

Screenshots

Piazza3 screens
Dah4 screens

Verdict

The call

The clearest difference is review sentiment: Dah at 100% against Piazza's 14%. Dah also leads on rating (4.4 vs 2.1) and device support (5 vs 3). Piazza's advantage is in-app purchases (none vs 3) and ratings volume (277 vs 8). On price, update cadence, ads and iOS requirement 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. Dah sells 3 one-off in-app purchases. Piazza asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Dah holds the better App Store score, 4.4 against 2.1. That said, the two scores are not equally well evidenced: Piazza has 277 ratings behind it against 8, 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 Dah's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on September 21, 2026 and July 7, 2026 respectively.

Scorecard6 real differences · 4 level
Piazza versus Dah: the parameters behind the verdict, then further details
ParameterPiazzaDah
PriceFreeFree
Rating2.1 (277 ratings)4.4 (8 ratings) — better
Positive reviews14.3% of reviews100.0% of reviews — better
Number of ratings277 — better8
Update frequencyFortnightlyFortnightly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac, Apple TV — better
Requires iOS15.615.0 — better
Further details — not scored
Size3 MB3.2 GB
Age rating4+4+
DeveloperPiazza Technologies, Inc.Toyz Electronics

Customer experience

Piazza

All ratings277 ratings
Positive20.9%
Neutral10.1%
Negative69.0%
Written reviews112 reviews
Positive14.3%
Neutral11.6%
Negative74.1%

Dah

All ratings8 ratings
Positive87.5%
Neutral0.0%
Negative12.5%
Written reviews2 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

Dah

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Piazza

No in-app purchases

3 purchases

Dah

One-time3
  • Dah-Varsity Points$4.99
  • Dah-Varsity Points$9.99
  • Deity Dah Life or Death STEMS$29.99

Questions

Is Piazza free?
Piazza is free to download, with no in-app purchases.
Is Dah free?
Dah is free to download, with in-app purchases available.
Which has better reviews, Piazza or Dah?
Dah is rated higher. Piazza averages 2.1 out of 5 from 277 ratings, while Dah averages 4.4 from 8 ratings.
Do Piazza or Dah have ads?
Neither Piazza nor Dah shows ads.
Which is updated more often, Piazza or Dah?
Piazza ships an update fortnightly, and Dah fortnightly. Most recently, Piazza was updated on September 21, 2026 and Dah on July 7, 2026.

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