# Nitrox Buddy vs DiverLog+

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.

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

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.

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.

## The numbers

| Metric | Nitrox Buddy | DiverLog+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (468 ratings)](https://appshunter.io/ios/app/nitrox-buddy/id572411073/reviews)** | [2.5 (111 ratings)](https://appshunter.io/ios/app/diverlog-plus/id1294460120/reviews) |
| Number of ratings | **468** | 111 |
| Positive reviews | **95.7% of reviews** | 19.1% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 weeks** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 6 MB | 89 MB |
| Requires iOS | 26.0 | **9.0** |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gereon Steffens](https://appshunter.io/developer/493030228) | [Head Watersports S.p.A.](https://appshunter.io/developer/1193522423) |

## What reviewers say

### Nitrox Buddy

[App page](https://appshunter.io/ios/app/nitrox-buddy/id572411073)

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:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip | $0.99 | one-time |

**What reviewers like**

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

**What reviewers complain about**

- 📱 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

**Reported bugs**

- 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**

- 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+

[App page](https://appshunter.io/ios/app/diverlog-plus/id1294460120)

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:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

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

**What reviewers complain about**

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

**Reported bugs**

- 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

**Requested features**

- 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


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*