# YS Pro vs Trillion FP

The clearest difference is in-app purchases: Trillion FP at none against YS Pro's 14. Trillion FP also leads on iOS requirement (9.0 vs 13.0). YS Pro's advantage is update cadence (monthly vs every 21 months). On price, ads and device support there is nothing between them.

Both are free to download. YS Pro sells 10 in-app purchases, starting at $17.99 per month. Trillion FP asks for nothing beyond the download.

YS Pro ships an update monthly, Trillion FP every 21 months. The most recent releases landed on October 17, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | YS Pro | Trillion FP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 21 months |
| Monetization | Free with in-app purchases | — |
| Size | 131 MB | 163 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [YACHT SENTINEL LIMITED](https://appshunter.io/developer/1100887535) | [Stark Group Pte. Ltd.](https://appshunter.io/developer/1219881311) |

## What reviewers say

### YS Pro

[App page](https://appshunter.io/ios/app/ys-pro/id1619748824)

Monitor your yacht remotely with this app, designed for owners of Yacht Sentinel devices. Track your vessel's status and receive alerts to ensure its security and well-being.

**Highlights:** Remote boat monitoring, Yacht Sentinel device integration, Security alerts, Vessel status tracking, Real-time notifications

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zone EU | $17.99 | per month |
| Standard | $17.99 | per month |
| Zone US | $19.99 | per month |
| Zone J | $22.99 | per month |
| Zone H | $24.99 | per month |
| Extended | $24.99 | per month |
| Zone A1 | $44.99 | per month |
| Extended+ | $44.99 | per month |
| Sentinel cam 2 | $69.99 | per year |
| Sentinel cam, yearly | $69.99 | per year |


### Trillion FP

[App page](https://appshunter.io/ios/app/trillion-fp/id1662441888)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is YS Pro free?

YS Pro is free to download, with in-app purchases available.

### Is Trillion FP free?

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

### Do YS Pro or Trillion FP have ads?

Neither YS Pro nor Trillion FP shows ads.

### Which is updated more often, YS Pro or Trillion FP?

YS Pro ships an update monthly, and Trillion FP every 21 months. Most recently, YS Pro was updated on October 17, 2026 and Trillion FP on October 19, 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.*