Piazza vs JustLmk
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
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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!
JustLmk
Never miss a class or a library spot again. This app notifies you when desired spots become available, helping you secure your place in popular courses and study locations.
- Class availability notifications
- Library spot alerts
- Subscribe to desired spots
- Real-time updates
- Easy-to-use interface
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Tired of missing out on the classes you need because they fill up too quickly? Use JustLmk to subscribe to classes and get a notification when they open. Can't find a spot in the library? Use JustLmk to find out about that too!
Screenshots
Verdict
The clearest difference is review sentiment: JustLmk at 100% against Piazza's 14%. JustLmk also leads on rating (5.0 vs 2.1) and update cadence (every 2 days vs fortnightly). Piazza's advantage is ratings volume (279 vs 3) and device support (3 vs 1). 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.
JustLmk holds the better App Store score, 5.0 against 2.1. That said, the two scores are not equally well evidenced: Piazza has 279 ratings behind it against 3, 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 JustLmk's.
Piazza ships an update fortnightly, JustLmk every 2 days. The most recent releases landed on September 30, 2026 and September 15, 2026 respectively.
| Parameter | Piazza | JustLmk |
|---|---|---|
| Price | Free | Free |
| Rating | 2.1 (279 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 14.2% of reviews | 100.0% of reviews — better |
| Number of ratings | 279 — better | 3 |
| Update frequency | Fortnightly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 16.0 |
| Further details — not scored | ||
| Size | 3 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Piazza Technologies, Inc. | Mehul Jasti |
Customer experience
Piazza
JustLmk
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
JustLmk
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Piazza
No in-app purchases
JustLmk
No in-app purchases
