Comparison

Buoyancy Calc vs EANx Assistant

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

Head to head
About

Buoyancy Calc

Calculate the optimal weight for scuba diving based on environmental factors. Input your weight, water type, tank, and exposure suit to get a suggested weight for neutral buoyancy.

Highlights
  • Calculate suggested diving weight
  • Adjust for water type
  • Adjust for tank type
  • Adjust for exposure suit
  • Supports pounds and kilograms
Features
Read full description

Quickly find out the suggested weight you should add when scuba diving in different environments. Based on PADI's Peak Performance Buoyancy basic weighting guideline*. Enter your weight in pounds or kilograms, and additionally set the type of water, tank, and exposure suit to dial in a suggested amount of weight to help keep you neutrally buoyant. *Note that this app and the developer are not officially a representative of PADI. This app will give the user a good estimate of the weight needed for the environment selected, but there are always adjustments needed to achieve peak performance, based on gender, physique, exposure suit age, accessories, etc.

About

EANx Assistant

Features
Read full description

EANx Assistant is a nitrox diving calculation tool designed for recreational divers and diving instructors. Whether you are a professional diving instructor or a nitrox diving enthusiast, this application can help you perform various nitrox diving-related calculations quickly and accurately. 【Main Features】 • Maximum diving depth calculation: Automatically calculates safe diving depth limits based on oxygen content percentage • Optimal nitrox ratio calculation: Provides the best gas mixture ratio for specified depths • Equivalent Air Depth calculation: Converts nitrox diving to equivalent air diving depth • Oxygen partial pressure calculation: Real-time monitoring of oxygen partial pressure values at different depths and gas mixtures • Adjustable maximum PPO₂ value: Supports customized safety thresholds, default is 1.4 【Usage Scenarios】 • Pre-dive planning: Quickly determine the optimal gas mixture for your diving plan • Teaching aid: Diving instructors can use it for training courses and on-site teaching 【Thoughtful Design】 • Clean and intuitive blue interface, reducing recognition pressure • Bilingual support in Chinese and English, meeting the needs of international divers • Intuitive slider controls for quick parameter adjustments EANx Assistant makes complex nitrox diving calculations simple. No internet connection required, perform calculations anytime, anywhere - an indispensable digital tool in your diving equipment. Note: This application is only intended as an auxiliary calculation tool and should not replace professional dive training and certification. Always follow safe diving rules and receive appropriate training before using nitrox gas mixtures.

Screenshots

Buoyancy Calc1 screens
EANx Assistant4 screens

Verdict

The call

The clearest difference is in-app purchases: Buoyancy Calc at none against EANx Assistant's 3. EANx Assistant's advantage is update cadence (every 2 days vs every 3 months). On price, ads, device support 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

Both are free to download. EANx Assistant sells 3 one-off in-app purchases. Buoyancy Calc asks for nothing beyond the download.

UpkeepUpdate frequency

Buoyancy Calc ships an update every 3 months, EANx Assistant every 2 days. The most recent releases landed on October 14, 2026 and October 8, 2026 respectively.

Scorecard2 real differences · 8 level
Buoyancy Calc versus EANx Assistant: the parameters behind the verdict, then further details
ParameterBuoyancy CalcEANx Assistant
PriceFreeFree
Rating3.1 (25 ratings) — better—
Positive reviews40.0% of reviews—
Number of ratings25 — better—
Update frequencyEvery 3 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.6
Further details — not scored
Size1 MB1 MB
Age rating4+4+
DeveloperEric Hamiter嘉亮 曾

In-app purchases

None

Buoyancy Calc

No in-app purchases

3 purchases

EANx Assistant

One-time3
  • Small Coffee$0.99
  • Medium Coffee$1.99
  • Large Coffee$2.99

Questions

Is Buoyancy Calc free?
Buoyancy Calc is free to download, with no in-app purchases.
Is EANx Assistant free?
EANx Assistant is free to download, with in-app purchases available.
Do Buoyancy Calc or EANx Assistant have ads?
Neither Buoyancy Calc nor EANx Assistant shows ads.
Which is updated more often, Buoyancy Calc or EANx Assistant?
Buoyancy Calc ships an update every 3 months, and EANx Assistant every 2 days. Most recently, Buoyancy Calc was updated on October 14, 2026 and EANx Assistant on October 8, 2026.

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