# Nitrox Buddy vs Diveplanner Tec & Rec

The clearest difference is review sentiment: Nitrox Buddy at 96% against Diveplanner Tec & Rec's 20%. Nitrox Buddy also leads on rating (4.9 vs 3.1) and ratings volume (468 vs 7). Diveplanner Tec & Rec's advantage is monetization model (free vs free with in-app purchases) and update cadence (every 3 months vs every 7 months). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Nitrox Buddy sells 1 one-off in-app purchase and Diveplanner Tec & Rec sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Nitrox Buddy holds the better App Store score, 4.9 against 3.1. That said, the two scores are not equally well evidenced: Nitrox Buddy has 468 ratings behind it against 7, 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 20% of Diveplanner Tec & Rec's.

Nitrox Buddy ships an update every 7 months, Diveplanner Tec & Rec every 3 months. The most recent releases landed on September 21, 2026 and August 19, 2026 respectively.

## The numbers

| Metric | Nitrox Buddy | Diveplanner Tec & Rec |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (468 ratings)](https://appshunter.io/ios/app/nitrox-buddy/id572411073/reviews)** | [3.1 (7 ratings)](https://appshunter.io/ios/app/diveplanner-tec-and-rec/id1506985833/reviews) |
| Number of ratings | **468** | 7 |
| Positive reviews | **95.7% of reviews** | 20.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 6 MB | 37 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone, iPod, Apple Watch | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Gereon Steffens](https://appshunter.io/developer/493030228) | [Sensetrails LLC](https://appshunter.io/developer/806088250) |

## 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)


### Diveplanner Tec & Rec

[App page](https://appshunter.io/ios/app/diveplanner-tec-and-rec/id1506985833)

Plan technical and recreational scuba dives with detailed gas management, decompression schedules, and contingency planning. This tool helps divers quickly create and share dive plans for various depths and conditions.

**Highlights:** Technical and recreational dive planning, Multi-gas and CCR dive schedules, Bühlmann decompression model (ZH16L-C), Automatic contingency plans, Gas requirement and weight calculation, Dive table generation, Metric and Imperial units

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Two weeks free trial | Free | one-time |
| Tec Basic | $7.99 | one-time |
| Tec Advanced | $19.99 | one-time |


## Frequently asked questions

### Is Nitrox Buddy free?

Nitrox Buddy is free to download, with in-app purchases available.

### Is Diveplanner Tec & Rec free?

Diveplanner Tec & Rec is free to download, with in-app purchases available.

### Which has better reviews, Nitrox Buddy or Diveplanner Tec & Rec?

Nitrox Buddy is rated higher. Nitrox Buddy averages 4.9 out of 5 from 468 ratings, while Diveplanner Tec & Rec averages 3.1 from 7 ratings.

### Do Nitrox Buddy or Diveplanner Tec & Rec have ads?

Neither Nitrox Buddy nor Diveplanner Tec & Rec shows ads.

### Which is updated more often, Nitrox Buddy or Diveplanner Tec & Rec?

Nitrox Buddy ships an update every 7 months, and Diveplanner Tec & Rec every 3 months. Most recently, Nitrox Buddy was updated on September 21, 2026 and Diveplanner Tec & Rec on August 19, 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.*