Nitrox Helper vs Diveplanner Tec & Rec
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Nitrox Helper
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Nitrox Helper is a Nitrox calculator designed for qualified EAN divers. Whether you're at the dive shop deciding on your mix or reviewing calculations before a dive, Nitrox Helper gives you quick, accurate answers with an interface designed for ease of use - even with cold hands. Your essential dive buddy for Enriched Air Nitrox (EAN) calculations. FOUR POWERFUL CALCULATORS Best EAN Mix Calculate the optimal oxygen percentage for your planned depth and PPO limit. Know exactly what mix to ask for at the fill station. Maximum Operating Depth (MOD) Determine the deepest safe depth for any Nitrox mix. Essential for dive planning and safety. Equivalent Air Depth (EAD) Convert your Nitrox dive to an equivalent air depth for use with standard Recreational Dive Planner (RDP) tables. Oxygen Partial Pressure (PPO) Monitor your oxygen partial pressure at any depth. Clear safety indicators warn you when approaching or exceeding safe limits. SALT WATER & FRESH WATER Calculate accurately for both environments. Sea water (10.0 m/atm) and fresh water (10.3 m/atm) use different pressure factors - Nitrox Helper accounts for this automatically. A read-only indicator on every calculator tab shows your current water type so you always know what you're calculating for. 8 LANGUAGES Use the app in your preferred language: English (UK), English (US), Afrikaans, Greek, French, Spanish, German, and Dutch. PERSONALISE YOUR EXPERIENCE - 16 beautiful colour themes - Metric (metres) or Imperial (feet) units - Configurable decimal places (0-3) for depth and PPO results - Per-tab unit switching from the toolbar DESIGNED FOR SAFETY - Clear PPO safety status indicators (Safe / Caution / Danger) - Visual warnings when exceeding Maximum Operating Depth - Read-only water type indicator prevents accidental changes - Important safety disclaimer on every calculator PRIVACY FIRST Your data stays on your device. No tracking, no analytics, no account required, no internet connection needed. TRY BEFORE YOU SUBSCRIBE The app has two separate trial mechanisms: 1. Nitrox Helper is free to download with a 30-day in-app trial that gives full access for 30 days. 2. 2-week introductory offer — Available on the Monthly, 6 Monthly, and Annual subscription plans. Compatible with iPhone and iPad. The Pro Tier has three subscription options. Nitrox Helper Pro Monthly at $0.99 a month with a 2-week free trial. Nitrox Helper Pro 6 Months at $5.99 every 6 months with a 2-week free trial. Nitrox Helper Pro Annual at $9.99 a year with a 2-week free trial — our best value. Nitrox Helper Pro Lifetime at $49.99 one-time. You control your subscriptions through the App Store subscription settings. DISCLAIMER: This calculator is for discussion purposes only and is not intended for actual dive planning. Always refer to your certifying agency's Enriched Air Diving procedures to plan your dives. Privacy Policy URL https://solosoftware.app/nitrox-helper/Nitrox_H_Privacy_Policy.html Your use of Nitrox Helper is governed by Apple's standard Licensed Application End User License Agreement. Terms of Service (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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.
- 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
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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 EN13319) 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
Verdict
The clearest difference is update cadence: Diveplanner Tec & Rec at every 3 months against Nitrox Helper's every 9 months. Diveplanner Tec & Rec also leads on device support (4 vs 2) and iOS requirement (13.0 vs 26.0). On price, ads and in-app purchases 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
Both are free to download. Nitrox Helper sells 4 in-app purchases, starting at $0.99 per month and Diveplanner Tec & Rec sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Nitrox Helper ships an update every 9 months, Diveplanner Tec & Rec every 3 months. The most recent releases landed on September 15, 2026 and August 19, 2026 respectively.
| Parameter | Nitrox Helper | Diveplanner Tec & Rec |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.1 (7 ratings) — better |
| Positive reviews | — | 20.0% of reviews |
| Number of ratings | — | 7 — better |
| Update frequency | Every 9 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 26.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Robert O'Connell | Sensetrails LLC |
In-app purchases
Nitrox Helper
- Pro Monthly14 Days trial$0.991 Month
- Pro 6 Monthly14 Days trial$5.996 Months
- Pro Annual14 Days trial$9.991 Year
- Pro Lifetime$49.99
Diveplanner Tec & Rec
- Two weeks free trialFree
- Tec Basic$7.99
- Tec Advanced$19.99
Questions
Is Nitrox Helper free?
Is Diveplanner Tec & Rec free?
Do Nitrox Helper or Diveplanner Tec & Rec have ads?
Which is updated more often, Nitrox Helper or Diveplanner Tec & Rec?
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