# uNotes vs Oxygen

The clearest difference is in-app purchases: Oxygen at none against uNotes's 2. Oxygen also leads on update cadence (every 9 days vs every 4 months) and ratings volume (6 vs 1). On price, rating, ads and device support there is nothing between them.

Both are free to download. uNotes sells 2 in-app purchases, starting at $7.99 per month. Oxygen asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for uNotes against 5.0 for Oxygen. That said, the two scores are not equally well evidenced: Oxygen has 6 ratings behind it against 1, so its average is the more settled of the two.

uNotes ships an update every 4 months, Oxygen every 9 days. The most recent releases landed on June 24, 2026 and June 7, 2026 respectively.

## The numbers

| Metric | uNotes | Oxygen |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/unotes/id6477337434/reviews) | [5.0 (6 ratings)](https://appshunter.io/ios/app/oxygen/id6645736637/reviews) |
| Number of ratings | 1 | **6** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 9 days** |
| Monetization | Freemium | **Free** |
| Size | 14 MB | 45 MB |
| Requires iOS | 15.0 | **14.0.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [14930398 Canada Inc.](https://appshunter.io/developer/1729030667) | [Shayar Ghafour](https://appshunter.io/developer/1790857594) |

## What reviewers say

### uNotes

[App page](https://appshunter.io/ios/app/unotes/id6477337434)

Access a vast library of community-contributed study materials, including past papers, assignments, and notes. Study smarter, improve grades, and save time with instant, free access to resources without needing a login. Engage with a global community of learners and share knowledge.

**Highlights:** Instant access to past papers and assignments, Community-driven content sharing, Free and open access to resources, Personalized user profiles, Search and filter study materials, No login required for access, Offline support for saved favorites

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly — uNotes Premium | $7.99 | per month |
| Annual — uNotes Premium | $59.99 | per year |


### Oxygen

[App page](https://appshunter.io/ios/app/oxygen/id6645736637)

This app provides medical students with a dedicated platform for their studies. It offers access to pre-recorded lectures aligned with coursework, allowing for flexible learning. The app features distinct roles for students and administrators to ensure an organized and efficient educational experience.

**Highlights:** Pre-recorded lecture access, Coursework-aligned content, Student role for learning, Administrator role for management, Flexible study schedule

**In-app purchases:** none


## Frequently asked questions

### Is uNotes free?

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

### Is Oxygen free?

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

### Which has better reviews, uNotes or Oxygen?

uNotes and Oxygen are both rated 5.0 out of 5 on the App Store, from 1 and 6 ratings respectively.

### Do uNotes or Oxygen have ads?

Neither uNotes nor Oxygen shows ads.

### Which is updated more often, uNotes or Oxygen?

uNotes ships an update every 4 months, and Oxygen every 9 days. Most recently, uNotes was updated on June 24, 2026 and Oxygen on June 7, 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.*