# Piazza vs ISGL

The clearest difference is update cadence: Piazza at every 11 days against ISGL's every 21 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Piazza ships an update every 11 days, ISGL every 21 months. The most recent releases landed on October 14, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Piazza | ISGL |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.1 (279 ratings)](https://appshunter.io/ios/app/piazza/id453142230/reviews)** | — |
| Number of ratings | **279** | — |
| Positive reviews | 14.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 21 months |
| Monetization | Free | — |
| Size | 3 MB | 9 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Piazza Technologies, Inc.](https://appshunter.io/developer/453142233) | [Bayyan Inc](https://appshunter.io/developer/1553976349) |

## 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


### ISGL

[App page](https://appshunter.io/ios/app/isgl/id6444024479)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Piazza free?

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

### Is ISGL free?

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

### Do Piazza or ISGL have ads?

Neither Piazza nor ISGL shows ads.

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

Piazza ships an update every 11 days, and ISGL every 21 months. Most recently, Piazza was updated on October 14, 2026 and ISGL on September 25, 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.*