# PSS vs Oasis One

The clearest difference is update cadence: PSS at every 4 months against Oasis One's every 19 months. On price, ads, in-app purchases and device support there is nothing between them.

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

PSS ships an update every 4 months, Oasis One every 19 months. The most recent releases landed on September 18, 2026 and July 22, 2026 respectively.

## The numbers

| Metric | PSS | Oasis One |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 19 months |
| Size | 71 MB | 112 MB |
| Requires iOS | **14.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TICgal](https://appshunter.io/developer/1571271067) | [ETECNIC MOVILIDAD ELECTRICA](https://appshunter.io/developer/1414150548) |

## What reviewers say

### PSS

[App page](https://appshunter.io/ios/app/pss/id1630711623)

**In-app purchases:** none


### Oasis One

[App page](https://appshunter.io/ios/app/oasis-one/id6504027902)

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

**In-app purchases:** none


## Frequently asked questions

### Is PSS free?

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

### Is Oasis One free?

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

### Do PSS or Oasis One have ads?

Neither PSS nor Oasis One shows ads.

### Which is updated more often, PSS or Oasis One?

PSS ships an update every 4 months, and Oasis One every 19 months. Most recently, PSS was updated on September 18, 2026 and Oasis One on July 22, 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.*