# HSU vs One Piano

The clearest difference is review sentiment: One Piano at 89% against HSU's 32%. One Piano also leads on rating (3.0 vs 2.3). HSU's advantage is update cadence (every 2 weeks vs monthly). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

One Piano holds the better App Store score, 3.0 against 2.3. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews point the same way: 32% of HSU's written reviews are positive against 89% of One Piano's.

HSU ships an update every 2 weeks, One Piano monthly. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | HSU | One Piano |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (3 ratings)](https://appshunter.io/ios/app/hsu/id1324439055/reviews) | **[3.0 (2 ratings)](https://appshunter.io/ios/app/one-piano/id6733223665/reviews)** |
| Number of ratings | **3** | 2 |
| Positive reviews | 32.0% of reviews | **88.9% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free | Free |
| Size | 216 MB | 50 MB |
| Requires iOS | 16.1 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hoa Sen University](https://appshunter.io/developer/1224518794) | [DAYONE ASIA](https://appshunter.io/developer/1771354962) |

## What reviewers say

### HSU

[App page](https://appshunter.io/ios/app/hsu/id1324439055)

This mobile application provides helpful features for students and staff. It serves as a student information system, streamlining access to academic and administrative information.

**Highlights:** Student information system, Features for students, Features for staff, Academic information access, Administrative information access

**In-app purchases:** none


### One Piano

[App page](https://appshunter.io/ios/app/one-piano/id6733223665)

Manage piano lessons and practice sessions with ease. Schedule classes, track progress, and receive important updates. Parents can monitor their child's learning journey and access electronic communication logs.

**Highlights:** Schedule group and practice lessons, Track learning progress and statistics, Manage registration information, Provide feedback on lessons, QR code check-in and attendance, Update news and events

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

**In-app purchases:** none


## Frequently asked questions

### Is HSU free?

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

### Is One Piano free?

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

### Which has better reviews, HSU or One Piano?

One Piano is rated higher. HSU averages 2.3 out of 5 from 3 ratings, while One Piano averages 3.0 from 2 ratings.

### Do HSU or One Piano have ads?

Neither HSU nor One Piano shows ads.

### Which is updated more often, HSU or One Piano?

HSU ships an update every 2 weeks, and One Piano monthly. Most recently, HSU was updated on November 2, 2026 and One Piano on November 4, 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.*