Comparison

Nitrox Buddy vs Diveplanner Tec & Rec

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

Diveplanner Tec & Rec

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
Read full description

Plan your technical or recreational dives in seconds on your iPhone, iPad and Mac ! Diveplanner is a full featured planner for technical and recreational scuba diving. It features various modules to quickly plan one or multiple dives including gas contingency and oxygen toxicity. Diveplanner was designed as a safe and reliable tool for divers. It helps plan technical and recreational dives quickly and easily and to share the schedule instantly with your dive buddy. Dive planning module: • Open Circuit / CCR, multi gas, decompression dive schedules up to 300 m/985 ft deep in fresh water or saltwater (including E​N13319) at sea level or altitude • Uses Bühlmann decompression model ZH16L-C with user selectable gradient factors as conservatism • Multi level dive instructions • Full automatic gas switch (from the list of selected gas for the dive) or manual gas switch or a mix of both • Full automatic contingency plans computation (lost decompression or travel gas) and ++ (too long/too deep) plans • Automatic bailout plan computation in CCR mode • Various information, caution or warnings for deep END, high or low PPO2, Setpoint, ICD, vestibular DCS due to ICD on gas switch • Computation of gas requirement and gas weight • Account for up to 6 consecutive dives with surface interval to account for residual saturation at start of the current dive • Works in Metric or Imperial units Dive table module: • Open Circuit / CCR, multi gas decompression dive table up to 66 m/210 ft deep and 60 min bottom time, in freshwater or saltwater (​including EN13319) at sea level or altitude • Uses Bühlmann decompression model ZH16L-C with user selectable gradient factors as conservatism • Account for up to 6 consecutive dives with surface interval to account for residual saturation while computing the dive table • Works in Metric or Imperial units • Translated in English, French and German

Screenshots

Nitrox Buddy4 screens
Diveplanner Tec & Rec4 screens

Verdict

The call

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.

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 and Diveplanner Tec & Rec sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard6 real differences · 4 level
Nitrox Buddy versus Diveplanner Tec & Rec: the parameters behind the verdict, then further details
ParameterNitrox BuddyDiveplanner Tec & Rec
PriceFreeFree
Rating4.9 (468 ratings) — better3.1 (7 ratings)
Positive reviews95.7% of reviews — better20.0% of reviews
Number of ratings468 — better7
Update frequencyEvery 7 monthsEvery 3 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPod, Apple WatchiPhone, iPad, iPod, Mac — better
Requires iOS26.013.0 — better
Further details — not scored
Size6 MB37 MB
Age rating4+4+
DeveloperGereon SteffensSensetrails LLC

Customer experience

Nitrox Buddy

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

Diveplanner Tec & Rec

All ratings7 ratings
Positive42.9%
Neutral28.6%
Negative28.6%
Written reviews5 reviews
Positive20.0%
Neutral0.0%
Negative80.0%

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)

Diveplanner Tec & Rec

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Nitrox Buddy

One-time1
  • Tip$0.99
3 purchases

Diveplanner Tec & Rec

One-time3
  • Two weeks free trialFree
  • Tec Basic$7.99
  • Tec Advanced$19.99

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.

Other comparisons