# HackUDC OS vs RF Link

The clearest difference is in-app purchases: HackUDC OS at none against RF Link's 2. RF Link's advantage is update cadence (every 3 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. RF Link sells 2 in-app purchases, starting at $1.99 per month. HackUDC OS asks for nothing beyond the download.

HackUDC OS ships an update every 2 weeks, RF Link every 3 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | HackUDC OS | RF Link |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Size | 70 MB | 47 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [GPUL](https://appshunter.io/developer/1874751084) | [Yogesh Yadav](https://appshunter.io/developer/6800277487) |

## What reviewers say

### HackUDC OS

[App page](https://appshunter.io/ios/app/hackudc-os/id6790912214)

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

**In-app purchases:** none


### RF Link

[App page](https://appshunter.io/ios/app/rf-link-signal-strength-los/id6800277485)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RF Link Pro Monthly | $1.99 | per month |
| RF Link Pro Lifetime | $6.99 | one-time |


## Frequently asked questions

### Is HackUDC OS free?

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

### Is RF Link free?

RF Link is free to download, with in-app purchases available.

### Do HackUDC OS or RF Link have ads?

Neither HackUDC OS nor RF Link shows ads.

### Which is updated more often, HackUDC OS or RF Link?

HackUDC OS ships an update every 2 weeks, and RF Link every 3 days. Most recently, HackUDC OS was updated on October 31, 2026 and RF Link on November 5, 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.*