# WALDOR vs Simply Oxygen

WALDOR and Simply Oxygen are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | WALDOR | Simply Oxygen |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | — |
| Size | 73 MB | 73 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [WALDOR clinic](https://appshunter.io/developer/1824659891) | [Simply Oxygen](https://appshunter.io/developer/1885346146) |

## What reviewers say

### WALDOR

[App page](https://appshunter.io/ios/app/waldor/id6748222714)

**Features:** macOS Compatibility

**In-app purchases:** none


### Simply Oxygen

[App page](https://appshunter.io/ios/app/simply-oxygen/id6760616243)

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

**In-app purchases:** none


## Frequently asked questions

### Is WALDOR free?

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

### Is Simply Oxygen free?

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

### Do WALDOR or Simply Oxygen have ads?

Both WALDOR and Simply Oxygen show ads.

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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.*