Nitrox Buddy vs Deepblu
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
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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.
Deepblu
Log your underwater adventures, enrich them with media, and connect with a global diving community. Automatically sync dive data from compatible computers and discover popular dive destinations worldwide. Build your diver profile and get your logs certified by instructors.
- Automatic dive log synchronization
- Add photos and videos to logs
- Discover and plan dive destinations
- Build diver identity and profile
- Instructor certification of logs
- Compatible with many dive computers
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Your incredible dive journeys start with Deepblu. THE MOST INTUITIVE DIVE LOG APP ● Enrich your dive log with underwater photos and videos to share with the global diving community ● Create dive logs automatically by synchronizing your dive computer via Bluetooth ● Compatible with most dive computers on the market (see all compatible dive computers below) ● Have your instructor certify your Deepblu dive log in-app ● Build your diver identity EXPLORE POPULAR DIVE DESTINATIONS AROUND THE WORLD ● Discover dive sites, plan dive travel based on user reviews and media ● Cancun – Explore MUSA, C-55, and unique sea life ● Tulum – Dive in Cenote Dos Ojos and more underwater caves ● Bali – Dive with mantas and discover unique reefs COMPATIBLE DIVE COMPUTERS Deepblu COSMIQ+, SCUBAPRO Aladin Sport, Galileo 2, Aladin H Matrix, TUSA DC Solar Link IQ1204, and Shearwater Petrel 2, Perdix, Perdix AI, Nerd 2. Deepblu is also compatible with Subsurface, which supports nearly 200 other dive computers from popular brands such as AquaLung, Cressi, Mares, Oceanic, SCUBAPRO, Shearwater, Sherwood, Suunto, Uwatec and many more. *The Deepblu app is recognized as the official digital training log of international dive agencies such as IDA, ITDA & DIWA, where instructors can digitally sign their students logs directly on the app, counting towards certification. Dive on.
Screenshots
Verdict
The clearest difference is review sentiment: Nitrox Buddy at 96% against Deepblu's 36%. Nitrox Buddy also leads on rating (4.9 vs 2.9) and ratings volume (468 vs 39). Deepblu's advantage is in-app purchases (none vs 1) and iOS requirement (9.0 vs 26.0). On price and device support 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. Deepblu asks for nothing beyond the download.
Nitrox Buddy holds the better App Store score, 4.9 against 2.9. That said, the two scores are not equally well evidenced: Nitrox Buddy has 468 ratings behind it against 39, so its average is the more settled of the two. Written reviews point the same way: 96% of Nitrox Buddy's written reviews are positive against 36% of Deepblu's.
| Parameter | Nitrox Buddy | Deepblu |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (468 ratings) — better | 2.9 (39 ratings) |
| Positive reviews | 95.7% of reviews — better | 36.4% of reviews |
| Number of ratings | 468 — better | 39 |
| Update frequency | Every 7 months | — |
| Ads | No | — |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPod, Apple Watch — better | iPhone, iPod |
| Requires iOS | 26.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 148 MB |
| Age rating | 4+ | 4+ |
| Developer | Gereon Steffens | Blaris ApS |
Customer experience
Nitrox Buddy
Deepblu
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)
Deepblu
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Nitrox Buddy
- Tip$0.99
Deepblu
No in-app purchases








