# GUE.tv vs Nitrox by Envivia

The clearest difference is monetization model: Nitrox by Envivia at free with in-app purchases against GUE.tv's subscription. GUE.tv's advantage is ratings volume (3 vs 1). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. GUE.tv sells 1 in-app purchase, starting at $24.99 per month and Nitrox by Envivia sells 4 in-app purchases, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for GUE.tv against 5.0 for Nitrox by Envivia. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

GUE.tv ships an update every 5 weeks, Nitrox by Envivia every 6 weeks. The most recent releases landed on September 21, 2026 and August 29, 2026 respectively.

## The numbers

| Metric | GUE.tv | Nitrox by Envivia |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/guetv/id1459213337/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/nitrox-by-envivia/id1613770132/reviews) |
| Number of ratings | **3** | 1 |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 weeks |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 64 MB | 72 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Global Underwater Explorers Inc.](https://appshunter.io/developer/1459213336) | [ENVIVIA](https://appshunter.io/developer/1583628615) |

## What reviewers say

### GUE.tv

[App page](https://appshunter.io/ios/app/guetv/id1459213337)

Access a vast library of scuba diving training videos, documentaries, and lectures. Improve your skills from beginner to advanced technical diving with expert-led content. Explore the underwater world through engaging films and educational material.

**Highlights:** Scuba training content, Underwater documentaries, Academic lectures, Field drills, Technical diving courses, Rebreather training

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $24.99 | per month |


### Nitrox by Envivia

[App page](https://appshunter.io/ios/app/nitrox-by-envivia/id1613770132)

This app is a premium digital guide for Nitrox diving, offering educational content and calculation tools to optimize dives. It helps divers understand oxygen limits, plan dives using gradient factors, and prepare for certification.

**Highlights:** Calculate MOD (Maximum Operating Depth), Manage oxygen partial pressure (PPO₂), Optimize Nitrox dive planning, Understand oxygen-related physiological limits, Prepare for Nitrox certification, Multilingual support

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $9.99 | per year |
| Thank you | $1.99 | one-time |
| Popular | $9.99 | one-time |
| Generous | $49.99 | one-time |


## Frequently asked questions

### Is GUE.tv free?

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

### Is Nitrox by Envivia free?

Nitrox by Envivia is free to download, with in-app purchases available.

### Which has better reviews, GUE.tv or Nitrox by Envivia?

GUE.tv and Nitrox by Envivia are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do GUE.tv or Nitrox by Envivia have ads?

Neither GUE.tv nor Nitrox by Envivia shows ads.

### Which is updated more often, GUE.tv or Nitrox by Envivia?

GUE.tv ships an update every 5 weeks, and Nitrox by Envivia every 6 weeks. Most recently, GUE.tv was updated on September 21, 2026 and Nitrox by Envivia on August 29, 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.*