Nitrox Buddy vs Dive Converter
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.
Dive Converter
Easily export your dive logs from Oceanic+ and SSI/mares into the Universal Dive Data Format (UDDF). This app translates dive information accurately and supports importing third-party UDDF files. It also offers features like reverse geocoding for dive locations and surface time calculation.
- Export Oceanic+ and SSI/mares dives to UDDF
- Reverse geocoding for dive locations
- Calculate surface time
- Backup and restore dives
- Import third-party UDDF files
- Filter and merge dives
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Dive Converter allows users to retrieve their Oceanic+ and SSI/mares dives and export selected dives in Universal Dive Data Format (UDDF). The app works on iOS (iPhone and iPad) and on macOS. We have taken special care of making sure that all information of your dive that is also supported by UDDF is translated correctly. The generated UDDF files have been tested with multiple dive log programs on iOS and macOS. Features: - support for downloading dives, referenced equipment, user profile, buddy information from Oceanic+ - reverse geocoding of longitude/latitude to also get an address (at least country and region) where your dive took place - calculation of surface time (not contained in Oceanic+ data) - export all information according to latest UDDF standard - backup and restore of all dives in JSON and UDDF format - import of 3rd party UDDF files - filtering of dives by category, time frame, rating, type, and text - merging of dives - deletion of dives (a restore is not possible because Oceanic+ does not allow overwriting of deleted dives) - conversion of DataTrak, TravelTrak, and Logtrak logbooks to UDDF logbooks (UWATEC and ScubaPro dive computers) Please note: You have to have an Oceanic+ account with email/password.
Screenshots
Verdict
The clearest difference is price: Nitrox Buddy at Free against Dive Converter's $1.99. Nitrox Buddy also leads on rating (4.9 vs 4.0) and review sentiment (96% vs 67%). Dive Converter's advantage is in-app purchases (none vs 1) and update cadence (every 2 months vs every 7 months). On ads 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
Nitrox Buddy is free to download; Dive Converter costs $1.99 up front. Nitrox Buddy sells 1 one-off in-app purchase. Dive Converter asks for nothing beyond the download.
Nitrox Buddy holds the better App Store score, 4.9 against 4.0. That said, the two scores are not equally well evidenced: Nitrox Buddy has 468 ratings behind it against 5, 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 67% of Dive Converter's.
Nitrox Buddy ships an update every 7 months, Dive Converter every 2 months. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.
| Parameter | Nitrox Buddy | Dive Converter |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.9 (468 ratings) — better | 4.0 (5 ratings) |
| Positive reviews | 95.7% of reviews — better | 66.7% of reviews |
| Number of ratings | 468 — better | 5 |
| Update frequency | Every 7 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Best chart rank | — | #84 — better |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, Mac |
| Requires iOS | 26.0 | 18.6 — better |
| Further details — not scored | ||
| Size | 6 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Gereon Steffens | Carsten Heinelt |
Customer experience
Nitrox Buddy
Dive Converter
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)
Dive Converter
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Nitrox Buddy
- Tip$0.99
Dive Converter
No in-app purchases
Questions
Is Nitrox Buddy free?
Is Dive Converter free?
Which has better reviews, Nitrox Buddy or Dive Converter?
Do Nitrox Buddy or Dive Converter have ads?
Which is updated more often, Nitrox Buddy or Dive Converter?
Other comparisons
