Comparison

Nitrox Tools vs EANx

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

Head to head
About

Nitrox Tools

This app provides essential tools for divers to plan and blend enriched air nitrox. It calculates dive parameters like equivalent air depth and maximum operating depth, and supports various blending methods for custom gas mixes. Easily switch between metric and imperial units and save custom settings for frequent use.

Highlights
  • Enriched air nitrox blending
  • Dive planning calculations
  • Equivalent Air Depth (EAD)
  • Partial Pressure of Oxygen (PPO2)
  • Maximum Operating Depth (MOD)
  • Save custom mixes and settings
  • Metric/Imperial unit switching
Features
Read full description

Enriched Air Nitrox blending and planning tools in your hand and available at a touch. You can use these tools at your air station to provide the information you need to fill a Nitrox tank from any existing mix (or empty). Dive Planning tools provide your Equivalent Air Depth, PPO2 at your planned depth, Maximum & Contingency Operating Depth at various oxygen partial pressures and the "best mix" for a planned depth and oxygen partial pressure. You can easily switch between Metric and Imperial/U.S. systems of measurement to adapt to a new fill station. The dive planning tools also support both salt and fresh water calculations. Chances are you regularly work with a specific set of mixes and and common dive situations. Nitrox Tools includes the convenience of saved settings that you can recall at a touch and adjust to a new situation as needed. You can also select mix values using pre-installed default mixes or your own saved custom mixes. When updating one of the mixes for a tool you are offered a list of saved mixes that you can use directly or adjust as needed. You can save the currently displayed mix by clicking the "+" button. Just like with the saved calculations, you can re-arrange or delete any mixes in your saved list. Do you need to share your planning or blending calculations with other divers? All the tools have the ability to share the results of the calculations from within the application. You can set default email addresses and a subject within Nitrox Tool's settings that will be automatically added when you share a result. Nitrox Tools supports a number of blending methods: • Top Up - blend a final mix from starting mix and pressure using 100% oxygen and air or any available topping mix. • Bleed Down - save expensive oxygen and valuable time by easily calculating how much gas to bleed from an existing cylinder to switch to a different mix using air or any available topping mix. • Mix + Mix - make a specific final mix using the remaining gas in the cylinder and mixing that with banked Nitrox (rather than pure oxygen) and air or another topping mix. This enables the blending of Nitrox without the use of pure oxygen for certain combinations of mixes. Avoiding pure oxygen may increase the safety of the blending process and help manage the cost. • Top Off - determine the expected result from topping an existing cylinder with air or some other topping mix. This situation is common when a diver wants to have the blender top the mix remaining from the first dive with air from the boat's compressor. Remember you must always personally analyze your mix before diving it. This application is not a substitute for proper training and should not be used as a substitute for proper dive planning or the primary Nitrox blending and planning methods taught during training. Please do not attempt to handle high pressure oxygen or fill SCUBA cylinders without proper training.

About

EANx

Features
Read full description

Dive Longer: Increase Your Bottom Time With this scuba dive planner, you can increase your bottom time by using Enriched Air Nitrox (EAN). The EAN calculator helps you determine the optimal nitrox blend for your dive, allowing you to extend your underwater adventures. Enjoy longer, more fulfilling dives without compromising your safety. Know Your Limits: Maximum Depth, No Decompression Limit, and More Understanding your limits is crucial for safe diving. EANx provides comprehensive information on maximum depth, no decompression limits (NDL), and other critical metrics. Stay informed and dive within safe limits to prevent decompression sickness and other diving-related risks. Deco Mix: MOD for Your Stage Bottle Planning a dive with multiple gas mixes? This app for scuba divers has you covered with its Deco Mix feature. Calculate the Maximum Operational Depth (MOD) for your stage bottles and ensure a seamless transition between gases during your dive. This feature is especially useful for technical divers who require precise gas management. Ultimate Scuba Dive Planner EANx is not just a calculation tool; it's your ultimate scuba dive planner. The app allows you to plan every aspect of your dive, from gas mixes to depth limits, ensuring you have a comprehensive dive plan before you hit the water. Stay organized and prepared with EANx, and make the most out of every dive. Why Choose EANx – Scuba Diving Calculator? EANx is designed by divers, for divers. It combines advanced algorithms with an intuitive user interface, making it accessible to divers of all experience levels. The app is regularly updated to incorporate the latest diving safety standards and practices, ensuring you have the most accurate and up-to-date information. User-Friendly Interface The app’s user-friendly interface makes it easy to input your data and get the results you need quickly. Whether you are calculating your MOD, EAN or other critical metrics, EANx provides a seamless experience, allowing you to focus on what matters most – enjoying your dive. Reliable and Accurate When it comes to diving, accuracy is paramount. This EAN and MOD calculator uses advanced algorithms to provide reliable and precise calculations, helping you make informed decisions for a safe and enjoyable dive. Trust EANx to be your reliable diving companion. This MOD calculator is the ultimate scuba diving assistance tool, offering a comprehensive suite of features to help you calculate Enriched Air Nitrox, Maximum Operational Depth, and other essential metrics. Dive safer, dive longer, and dive smarter with EANx. Download EANx – Scuba Diving Calculator today and take your diving experience to the next level.

Screenshots

Nitrox Tools4 screens
EANx3 screens

Verdict

The call

The clearest difference is price: EANx at $2.99 against Nitrox Tools's $5.99. Nitrox Tools's advantage is device support (4 vs 2). On update cadence, ads, in-app purchases and iOS requirement 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

Nitrox Tools costs $5.99 and EANx $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Nitrox Tools ships an update every 5 months, EANx every 7 months. The most recent releases landed on September 28, 2026 and September 17, 2026 respectively.

Scorecard2 real differences · 8 level
Nitrox Tools versus EANx: the parameters behind the verdict, then further details
ParameterNitrox ToolsEANx
Price$5.99$2.99 — better
Rating5.0 (4 ratings) — better—
Positive reviews88.5% of reviews—
Number of ratings4 — better—
Update frequencyEvery 5 months — betterEvery 7 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size7 MB26 MB
Age rating4+12+
DeveloperGreg MclaughlinMichael Czolko

In-app purchases

None

Nitrox Tools

No in-app purchases

None

EANx

No in-app purchases

Questions

Is Nitrox Tools free?
Nitrox Tools costs $5.99, with no in-app purchases.
Is EANx free?
EANx costs $2.99, with no in-app purchases.
Do Nitrox Tools or EANx have ads?
Neither Nitrox Tools nor EANx shows ads.
Which is updated more often, Nitrox Tools or EANx?
Nitrox Tools ships an update every 5 months, and EANx every 7 months. Most recently, Nitrox Tools was updated on September 28, 2026 and EANx on September 17, 2026.

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