Comparison

Nitrox Buddy vs DiverLog+

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read 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.

About

DiverLog+

This app allows divers to digitally log and manage all aspects of their underwater adventures. Track dive details, gear, buddies, and locations. Sync data with dive computers and cloud backups, and share your experiences.

Highlights
  • Manage dive details
  • Search dives by location/buddy
  • Manage dive spots and gear
  • Track personal medical/certification info
  • Add photos and videos
  • Sync with desktop/cloud
  • Download/upload dive computer data
Features
Read full description

The DiverLog+ for mobile app is the premier full-featured dive log application. DiverLog+ is the Official App for Bluetooth Smart dive computers made by the following manufacturers: AQUALUNG, APEKS, HUISH/OCEANIC, SHERWOOD. FEATURES - View, edit, and manage your DC dive detail data - Search dives based on location, dive type, buddies, many more - View, edit and manage your favorite dive spots and locations - View, edit and manage your dive gear, buddies - Keep track of personal data including medical and certification information - Upload slates, MY INFO, GPS Location to Dive Computer (DSX only) - Add photos, Youtube video links to dives, and remember those fun times - Social sharing features - Synchronize with DiverLog application for desktop, laptop, and mobiles devices - Download dive data from Dive Computer, upload your desired settings to Dive Computer, update firmware to Dive Computer using Bluetooth Smart (currently supports BEACON, CALM-ACT, DSX, i200C, i300C, i330R, i330R Console, i470TC, i550C, i750TC, i770R, GEO 4.0, GEO AIR, PROPLUS 4.0, PROPLUS X, SAGE, VEO 4.0, WISDOM 4.0) - Much more ... SUMMARY DiverLog+ allows you to view, edit, and manage your dives easily. The dive detail section gives you all the information you need, including dive data, location and dive site information, tank and buddy information, gear bag, and more. Add your diving buddies and keep your personal certification and medical information on hand at all times. View your dive profile in full screen view. Add and manage your gear with easy entry forms. DiverLog+ offers you simple search methods to find your dives .. search by location, dive site, and even which computer you used! ...See all your dives on the world map, a unique feature we call your dive activity map! You can even keep track of your personal information, including medical and certification info. You can now sync your dives with the DiveCloud online dive data backup system so you never lose your dives, and always have them available, wherever you are! Connect with our developers by posting in the forum, or contact by email at the support website: https://ediverlog.com

Screenshots

Nitrox Buddy4 screens
DiverLog+4 screens

Verdict

The call

The clearest difference is review sentiment: Nitrox Buddy at 96% against DiverLog+'s 19%. Nitrox Buddy also leads on rating (4.9 vs 2.5) and ratings volume (468 vs 111). DiverLog+'s advantage is in-app purchases (none vs 1) and update cadence (every 5 weeks vs every 7 months). On price, ads, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Nitrox Buddy sells 1 one-off in-app purchase. DiverLog+ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Nitrox Buddy holds the better App Store score, 4.9 against 2.5. Both are backed by a comparable volume of ratings — 468 and 111 respectively. Written reviews point the same way: 96% of Nitrox Buddy's written reviews are positive against 19% of DiverLog+'s.

UpkeepUpdate frequency

Nitrox Buddy ships an update every 7 months, DiverLog+ every 5 weeks. The most recent releases landed on September 21, 2026 and September 4, 2026 respectively.

Scorecard6 real differences · 4 level
Nitrox Buddy versus DiverLog+: the parameters behind the verdict, then further details
ParameterNitrox BuddyDiverLog+
PriceFreeFree
Rating4.9 (468 ratings) — better2.5 (111 ratings)
Positive reviews95.7% of reviews — better19.1% of reviews
Number of ratings468 — better111
Update frequencyEvery 7 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPod, Apple Watch — betteriPhone, iPod
Requires iOS26.09.0 — better
Further details — not scored
Size6 MB89 MB
Age rating4+4+
DeveloperGereon SteffensHead Watersports S.p.A.

Customer experience

Nitrox Buddy

All ratings431 ratings
Positive97.7%
Neutral1.6%
Negative0.7%
Written reviews47 reviews
Positive95.7%
Neutral0.0%
Negative4.3%

DiverLog+

All ratings111 ratings
Positive26.1%
Neutral18.0%
Negative55.9%
Written reviews136 reviews
Positive19.1%
Neutral19.9%
Negative61.0%

User reviews

Nitrox Buddy

From 468 App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Quick calculations
  • ✅ Accurate results
  • 💡 Free to use
  • 🎯 Essential for Nitrox divers

Room to improve

  • 📱 Ugly iPad icon
  • ⚠️ MOD calculation limited to 40% O2 in older versions
  • ⚠️ MOD calculation limited to 50% O2 in older versions
  • ⚠️ Needs to work with older iOS versions

DiverLog+

From 111 App Store ratings

What we love

  • 🚀 Easy Bluetooth sync with dive computers
  • 📸 Photo and video storage integration
  • 📝 Comprehensive dive logging features
  • ⚙️ Convenient app-based computer settings
  • 🤝 Buddy and gear management

Room to improve

  • 🐛 Frequent app crashes
  • 💾 Data loss on phone replacement
  • 🔗 No cloud backup by default
  • ❌ No cross-device synchronization
  • 🔐 Unreliable account login system

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)

DiverLog+

Reported bugs

28 issues
  • App crashes when downloading/syncing dives
  • Crashes during firmware updates
  • Crashes when accessing settings or verification
  • All dive data lost after app reinstall
  • Data loss when switching phones
Show 23 more
  • Bluetooth connection failures
  • Firmware update stuck at 99%
  • Incorrect elapsed dive time calculations
  • Download timeouts around 50%
  • GPS coordinates disappear after naming dive site
  • Tank pressure not auto-populated from wireless transmitter
  • Dive computer not recognized after updates
  • Sync failures with dive cloud
  • Cannot add photos or videos
  • Incomplete label text in log lists
  • Time synchronization not working
  • Settings revert to English/Anglo-Saxon format
  • Cannot update GPS locations for dive sites
  • Dive data shows incorrect tanks and mixes
  • Map displays wrong locations (e.g., Antarctica instead of Galapagos)
  • Keyboard input issues on iPad
  • App crashes on specific iPhone models
  • Network errors on login
  • Cannot edit personal information (blood type, insurance)
  • Graph display showing blank/white after updates
  • Account creation confusion
  • Password reset not working
  • Dives disappear after login

Requested features

20 requests
  • Cloud backup and sync across devices
  • iPad-optimized version with landscape mode
  • Cumulative dive time and average RMV statistics
  • Average depth per dive display
  • Merge/combine multiple dives into one
Show 15 more
  • Export to Excel or other formats
  • Ability to re-download deleted dives
  • Edit and delete dive locations easily
  • Back buttons in data entry forms
  • Photo thumbnails in dive log list
  • Safety stop indication during dives
  • Heart rate tracking integration
  • Ability to split dives recorded as one
  • Search by depth ranges (greater than/less than)
  • Multi-location search capability
  • Separate logs for scuba vs freediving
  • Battery indicator for dive computer
  • Customizable gear bag items
  • Manual GPS coordinate input and editing
  • Offline mode capability

In-app purchases

1 purchases

Nitrox Buddy

One-time1
  • Tip$0.99
None

DiverLog+

No in-app purchases

Questions

Is Nitrox Buddy free?
Nitrox Buddy is free to download, with in-app purchases available.
Is DiverLog+ free?
DiverLog+ is free to download, with no in-app purchases.
Which has better reviews, Nitrox Buddy or DiverLog+?
Nitrox Buddy is rated higher. Nitrox Buddy averages 4.9 out of 5 from 468 ratings, while DiverLog+ averages 2.5 from 111 ratings.
Do Nitrox Buddy or DiverLog+ have ads?
Neither Nitrox Buddy nor DiverLog+ shows ads.
Which is updated more often, Nitrox Buddy or DiverLog+?
Nitrox Buddy ships an update every 7 months, and DiverLog+ every 5 weeks. Most recently, Nitrox Buddy was updated on September 21, 2026 and DiverLog+ on September 4, 2026.

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