# Four Days vs OM Oasis Studios

The clearest difference is price: OM Oasis Studios at Free against Four Days's $1.99. OM Oasis Studios also leads on rating (4.9 vs 2.6) and ratings volume (150 vs 8). Four Days's advantage is iOS requirement (13.4 vs 15.1). On update cadence, ads, in-app purchases and device support there is nothing between them.

OM Oasis Studios is free to download; Four Days costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

OM Oasis Studios holds the better App Store score, 4.9 against 2.6. That said, the two scores are not equally well evidenced: OM Oasis Studios has 150 ratings behind it against 8, so its average is the more settled of the two.

Four Days ships an update every 4 months, OM Oasis Studios every 3 months. The most recent releases landed on October 16, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Four Days | OM Oasis Studios |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [2.6 (8 ratings)](https://appshunter.io/ios/app/four-days/id1467531634/reviews) | **[4.9 (150 ratings)](https://appshunter.io/ios/app/om-oasis-studios/id6503146470/reviews)** |
| Number of ratings | 8 | **150** |
| Positive reviews | 44.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Paid | **Free** |
| Size | 23 MB | 55 MB |
| Requires iOS | **13.4** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sergio Gutierrez Mota](https://appshunter.io/developer/1467531633) | [Momence, Inc.](https://appshunter.io/developer/1577856011) |

## What reviewers say

### Four Days

[App page](https://appshunter.io/ios/app/four-days/id1467531634)

This app helps manage food allergies by tracking your diet. It guides you through a rotation diet to avoid repetitive food consumption and prevent new intolerances. Maintain dietary diversity and support gut health.

**Highlights:** Rotation diet tracking, Avoid food repetition, Prevent new intolerances, Enhance nutrient diversity, Support gut healing

**Features:** macOS Compatibility

**In-app purchases:** none


### OM Oasis Studios

[App page](https://appshunter.io/ios/app/om-oasis-studios/id6503146470)

Easily manage your account, book classes and events, and stay connected with your studio. Message directly, view announcements, and access shared content.

**Highlights:** Account management, Class and event booking, Direct messaging, Public feed for announcements, Content sharing

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

**In-app purchases:** none


## Frequently asked questions

### Is Four Days free?

Four Days costs $1.99, with no in-app purchases.

### Is OM Oasis Studios free?

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

### Which has better reviews, Four Days or OM Oasis Studios?

OM Oasis Studios is rated higher. Four Days averages 2.6 out of 5 from 8 ratings, while OM Oasis Studios averages 4.9 from 150 ratings.

### Do Four Days or OM Oasis Studios have ads?

Neither Four Days nor OM Oasis Studios shows ads.

### Which is updated more often, Four Days or OM Oasis Studios?

Four Days ships an update every 4 months, and OM Oasis Studios every 3 months. Most recently, Four Days was updated on October 16, 2026 and OM Oasis Studios on October 23, 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.*