# PolyU Halls vs Opportunity Deck

The clearest difference is in-app purchases: PolyU Halls at none against Opportunity Deck's 3. PolyU Halls also leads on ads (none vs shown). Opportunity Deck's advantage is update cadence (every 4 days vs every 5 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Opportunity Deck sells 3 in-app purchases, starting at $14.99 per month. PolyU Halls asks for nothing beyond the download.

PolyU Halls ships an update every 5 months, Opportunity Deck every 4 days. The most recent releases landed on October 8, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | PolyU Halls | Opportunity Deck |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 4 days** |
| Size | 14 MB | 72 MB |
| Requires iOS | 15.6 | **15.0.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [The Hong Kong Polytechnic University](https://appshunter.io/developer/442903588) | [Opportunity Deck](https://appshunter.io/developer/1896238333) |

## What reviewers say

### PolyU Halls

[App page](https://appshunter.io/ios/app/polyu-halls/id6503722401)

**Features:** macOS Compatibility

**In-app purchases:** none


### Opportunity Deck

[App page](https://appshunter.io/ios/app/opportunity-deck/id6766213219)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $14.99 | per month |
| Premium Quarterly | $29.99 | per 3 months |
| Premium Annual | $59.99 | per year |


## Frequently asked questions

### Is PolyU Halls free?

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

### Is Opportunity Deck free?

Opportunity Deck is free to download, with in-app purchases available.

### Do PolyU Halls or Opportunity Deck have ads?

Opportunity Deck shows ads; PolyU Halls does not.

### Which is updated more often, PolyU Halls or Opportunity Deck?

PolyU Halls ships an update every 5 months, and Opportunity Deck every 4 days. Most recently, PolyU Halls was updated on October 8, 2026 and Opportunity Deck on October 14, 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.*