# ATRIS vs Oasis One

The clearest difference is iOS requirement: ATRIS at 13.0 against Oasis One's 15.5. On price, update cadence, ads and in-app purchases there is nothing between them.

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

ATRIS ships an update every 11 months, Oasis One every 19 months. The most recent releases landed on October 9, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | ATRIS | Oasis One |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 months** | Every 19 months |
| Size | 37 MB | 112 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ISAGEN](https://appshunter.io/developer/1064239781) | [ETECNIC MOVILIDAD ELECTRICA](https://appshunter.io/developer/1414150548) |

## What reviewers say

### ATRIS

[App page](https://appshunter.io/ios/app/atris/id1064239782)

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

**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 ATRIS free?

ATRIS 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 ATRIS or Oasis One have ads?

Neither ATRIS nor Oasis One shows ads.

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

ATRIS ships an update every 11 months, and Oasis One every 19 months. Most recently, ATRIS was updated on October 9, 2026 and Oasis One on October 15, 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.*