# Piazza vs Concorde TSP

The clearest difference is review sentiment: Concorde TSP at 76% against Piazza's 14%. Concorde TSP also leads on rating (4.2 vs 2.1) and iOS requirement (13.5 vs 15.6). Piazza's advantage is update cadence (fortnightly vs every 8 months) and ratings volume (277 vs 11). 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.

Concorde TSP holds the better App Store score, 4.2 against 2.1. That said, the two scores are not equally well evidenced: Piazza has 277 ratings behind it against 11, 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 76% of Concorde TSP's.

Piazza ships an update fortnightly, Concorde TSP every 8 months. The most recent releases landed on September 21, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Piazza | Concorde TSP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.1 (277 ratings)](https://appshunter.io/ios/app/piazza/id453142230/reviews) | **[4.2 (11 ratings)](https://appshunter.io/ios/app/concorde-tsp/id498366515/reviews)** |
| Number of ratings | **277** | 11 |
| Positive reviews | 14.3% of reviews | **76.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 8 months |
| Monetization | Free | Free |
| Size | 3 MB | 6 MB |
| Requires iOS | 15.6 | **13.5** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Piazza Technologies, Inc.](https://appshunter.io/developer/453142233) | [William Cook](https://appshunter.io/developer/905963632) |

## 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


### Concorde TSP

[App page](https://appshunter.io/ios/app/concorde-tsp/id498366515)

This app provides exact optimal solutions for the Traveling Salesman Problem (TSP) on your device. It includes modules for map routing, tour-finding heuristics, and a TSP challenge, all based on established computational mathematics.

**Highlights:** Exact optimal solutions for TSP, Solves instances of 1,000+ cities, Local computations on iPhone/iPad, Includes TSP Art and Map Routing, Tour-Finding Heuristics, Minimum Spanning Tree module

**In-app purchases:** none


## Frequently asked questions

### Is Piazza free?

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

### Is Concorde TSP free?

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

### Which has better reviews, Piazza or Concorde TSP?

Concorde TSP is rated higher. Piazza averages 2.1 out of 5 from 277 ratings, while Concorde TSP averages 4.2 from 11 ratings.

### Do Piazza or Concorde TSP have ads?

Neither Piazza nor Concorde TSP shows ads.

### Which is updated more often, Piazza or Concorde TSP?

Piazza ships an update fortnightly, and Concorde TSP every 8 months. Most recently, Piazza was updated on September 21, 2026 and Concorde TSP on September 11, 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.*