# TY Maths vs HKDSE Physics Practice & Notes

The clearest difference is in-app purchases: TY Maths at none against HKDSE Physics Practice & Notes's 4. TY Maths also leads on iOS requirement (13.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. HKDSE Physics Practice & Notes sells 4 in-app purchases, starting at $8.99 per month. TY Maths asks for nothing beyond the download.

TY Maths ships an update every 5 days, HKDSE Physics Practice & Notes every 3 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | TY Maths | HKDSE Physics Practice & Notes |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 3 days** |
| Size | 46 MB | 145 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Wing Kit Yu](https://appshunter.io/developer/6776310583) | [Pickmy AI](https://appshunter.io/developer/1869516043) |

## What reviewers say

### TY Maths

[App page](https://appshunter.io/ios/app/ty-maths/id6776310581)

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

**In-app purchases:** none


### HKDSE Physics Practice & Notes

[App page](https://appshunter.io/ios/app/hkdse-physics-practice-and-notes/id6781737430)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DSE Physics Pro | $8.99 | per month |
| 180日 Pro 全功能 | $19.99 | one-time |
| 90日 Pro 全功能 | $19.99 | one-time |
| Pro 90天優惠 | $19.99 | one-time |


## Frequently asked questions

### Is TY Maths free?

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

### Is HKDSE Physics Practice & Notes free?

HKDSE Physics Practice & Notes is free to download, with in-app purchases available.

### Do TY Maths or HKDSE Physics Practice & Notes have ads?

Neither TY Maths nor HKDSE Physics Practice & Notes shows ads.

### Which is updated more often, TY Maths or HKDSE Physics Practice & Notes?

TY Maths ships an update every 5 days, and HKDSE Physics Practice & Notes every 3 days. Most recently, TY Maths was updated on October 28, 2026 and HKDSE Physics Practice & Notes on October 31, 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.*