Nitrox Buddy vs DeeperBlue.com
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Nitrox Buddy
This application serves as a straightforward calculator for nitrox and enriched air divers. It quickly computes essential dive data such as Maximum Operating Depth (MOD), Equivalent Air Depth (EAD), Best Mix, and Partial Pressure of Oxygen (PPO2). It supports both imperial and metric units and offers a companion watch app for on-the-go calculations.
- Calculate MOD, EAD, Best Mix, PPO2
- Imperial and metric unit support
- Sea and fresh water options
- Selectable max oxygen content
- Selectable max partial pressure
- Companion watch app
Read full descriptionHide full description
Nitrox Buddy is a no-frills calculator app for nitrox/enriched air divers - use it to quickly calculate the most important data for your dive: Maximum Operating Depth/MOD, Equivalent Air Depth/EAD, Best Mix and PPO2. The app works with imperial or metric measurements, sea or fresh water, and allows you to select the maximum oxygen content and partial pressure. A companion watch app puts lets you perform all these calculations on your wrist.
DeeperBlue.com
Stay informed about freediving, scuba diving, ocean advocacy, and diving travel with daily news, in-depth articles, and unbiased reviews. Access ultimate guides, watch videos, and engage with a passionate community.
- Daily diving journalism
- Live news notifications
- In-depth feature articles
- Ultimate diving guides
- Video of the Week
- Community comments and sharing
- Searchable archives
Read full descriptionHide full description
Get the latest breaking news daily, comprehensive in-depth articles, unbiased reviews, and regular features on Freediving, Scuba Diving, Ocean Advocacy, and Diving Travel via the official DeeperBlue.com app. DeeperBlue.com is one of the premier online destinations for divers. Founded in 1996 we have a thriving community built around those passionate about the underwater world. DeeperBlue.com is far more than just a simple dive blog or forum – the site has strong editorial feature articles, daily news on diving, a thriving forum, user-submitted photo galleries, and a global social media presence. Some features of the new DeeperBlue.com App are: • Access the full range of daily DeeperBlue.com diving journalism, specially designed for your iPhone or iPad • Stay up to date with live news with notifications • In-depth features covering Freediving, Scuba Diving, Ocean Advocacy, and Diving Travel • Check out our ultimate guides to diving including our Beginner Guides and Top Dive Sites of the World • Watch our Video of the Week directly in the app. • Receive notifications and alerts to stay informed on the underwater world • Choose what you are interested in • Read comments on articles and share your own thoughts • Share stories by email, Whatsapp, and your favorite social media app • Search our extensive archives directly in the app. This app is totally free to download and use.
Screenshots
Verdict
The clearest difference is in-app purchases: DeeperBlue.com at none against Nitrox Buddy's 1. DeeperBlue.com also leads on update cadence (every 3 months vs every 7 months) and iOS requirement (11.0 vs 26.0). Nitrox Buddy's advantage is ratings volume (468 vs 61). On price, rating, review sentiment and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Nitrox Buddy sells 1 one-off in-app purchase. DeeperBlue.com asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.9 for Nitrox Buddy against 4.8 for DeeperBlue.com. That said, the two scores are not equally well evidenced: Nitrox Buddy has 468 ratings behind it against 61, so its average is the more settled of the two. Written reviews are what separate them: 96% of Nitrox Buddy's written reviews are positive against 100% of DeeperBlue.com's.
Nitrox Buddy ships an update every 7 months, DeeperBlue.com every 3 months. The most recent releases landed on September 25, 2026 and September 5, 2026 respectively.
| Parameter | Nitrox Buddy | DeeperBlue.com |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (468 ratings) — better | 4.8 (61 ratings) |
| Positive reviews | 95.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 468 — better | 61 |
| Update frequency | Every 7 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 26.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 34 MB |
| Age rating | 4+ | 17+ |
| Developer | Gereon Steffens | DeeperBlue.com |
Customer experience
Nitrox Buddy
DeeperBlue.com
Bugs and requests
Nitrox Buddy
Reported bugs
4 issues- iPad icon is ugly
- MOD limit of 50% O2 despite 100% O2 setting (resolved)
- MOD limit of 40% O2 (older version)
- Does not work with older iOS versions
Requested features
4 requests- Add MOD 1.5 option
- Allow MOD calculation up to 100% O2 and indicate max exposure duration
- Change color for inappropriate mixes (e.g., 50% at 40m)
- Support older iOS versions (5 & 6)
DeeperBlue.com
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Nitrox Buddy
- Tip$0.99
DeeperBlue.com
No in-app purchases
