# Piazza vs JustLmk

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.

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.

## The numbers

| Metric | Piazza | JustLmk |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.1 (279 ratings)](https://appshunter.io/ios/app/piazza/id453142230/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/justlmk/id6762502415/reviews)** |
| Number of ratings | **279** | 3 |
| Positive reviews | 14.2% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Free | Free |
| Size | 3 MB | 4 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Piazza Technologies, Inc.](https://appshunter.io/developer/453142233) | [Mehul Jasti](https://appshunter.io/developer/1759822616) |

## What reviewers say

### Piazza

[App page](https://appshunter.io/ios/app/piazza/id453142230)

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Useful app
- 🚀 Great for tracking classes
- 🚀 Convenient mobile access

**What reviewers complain about**

- 🐛 Crashes frequently
- 🐛 Buggy and unreliable
- 🐛 Lacks key features from web version
- 🐛 Poor user interface and navigation
- 🔒 Login and authentication issues

**Reported bugs**

- Inability to post or reply
- Randomly logs out users
- Fails to load posts and resources
- Incompatible with newer iOS versions

**Requested features**

- 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

[App page](https://appshunter.io/ios/app/justlmk/id6762502415)

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.

**Highlights:** Class availability notifications, Library spot alerts, Subscribe to desired spots, Real-time updates, Easy-to-use interface

**In-app purchases:** none


## Frequently asked questions

### Is Piazza free?

Piazza is free to download, with no in-app purchases.

### Is JustLmk free?

JustLmk is free to download, with no in-app purchases.

### Which has better reviews, Piazza or JustLmk?

JustLmk is rated higher. Piazza averages 2.1 out of 5 from 279 ratings, while JustLmk averages 5.0 from 3 ratings.

### Do Piazza or JustLmk have ads?

Neither Piazza nor JustLmk shows ads.

### Which is updated more often, Piazza or JustLmk?

Piazza ships an update fortnightly, and JustLmk every 2 days. Most recently, Piazza was updated on September 30, 2026 and JustLmk on September 15, 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.*