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.

186+ iOS apps curated and reviewed
Every iPhone needs a few good buoyancy calc apps. We benchmark 186+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

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.






Transform your Apple Watch Ultra into a comprehensive dive computer for scuba, freediving, and snorkeling. Explore new locations with heatmaps, track your routes, organize underwater media, and share your adventures securely. Plan dives, monitor real-time data, and stay safe with advanced algorithms.






Easily manage your swimming pool's water chemistry by tracking key levels like chlorine and pH. This app calculates the precise amounts of chemicals needed to maintain clear, algae-free water, offering a cost-effective alternative to pool store advice.


This app helps you master pool chemistry by accurately calculating chemical dosages and balancing water based on the LSI. It offers a user-friendly experience for both novices and professionals, including a volume estimator and educational videos.


Estimate the correct amount of weight needed for proper buoyancy on SCUBA dives. The app uses a proprietary algorithm considering factors like your weight, fitness, exposure suit, BCD, tank, and water type. It provides a helpful starting point for weight checks.


This aviation calculator app offers 27 functions for navigation, fuel calculations, and conversions. It includes a versatile timer for tracking multiple time zones and performing countdowns with alerts. Designed for pilots, it simplifies complex flight planning and in-flight computations.


This app provides a comprehensive suite of physics calculators, essential formulas, and detailed element information. It's designed to be a valuable resource for students and professionals in the field of physics.


Calculate the volume of various tank shapes with precision and ease. This user-friendly tool supports a wide range of tank types and units, making it ideal for professionals and DIY enthusiasts alike. It offers advanced algorithms for accuracy and is optimized for efficiency on your device.


This tool calculates humidity-related air properties with a calculator-like interface. It supports six key parameters and provides accurate results even under extreme conditions. Ideal for HVAC, cleanrooms, and industrial drying.


This app simplifies fluid mechanics calculations, allowing users to determine buoyant forces, densities, volumes, and weights. It offers real-time visualizations and interactive graphics to help understand physics principles like Archimedes' principle.


Estimate the potential hurt level of falling objects with this tool. Capture object details, photos, and notes to visualize the impact and generate PDF reports for sharing.


This HVAC tool aids in piping system design, offering calculators for friction loss, velocity, and heat load. It includes a Cv tool and a specialized calculator for balancing contractors to determine valve settings and flow rates.


Quickly estimate surface spill volumes in the field with this tool. Calculate for square, rectangular, circular, and triangular spills, with options for tank displacement. Features a clean interface and helpful library for efficient on-site calculations.


This tool helps metal fabricators calculate the necessary tonnage for air bending parts on press brakes. It guides users through selecting material type, thickness, and die opening to determine tonnage, minimum flange length, and inside bend radius.


This app provides advanced calculations for HVAC and sheet metal professionals. It simplifies complex dimensional math, geometry, and trigonometry with specialized functions for ducting, airflow, and construction layouts. Offers a free trial before committing to a subscription.




This tool simplifies HVAC/R technician tasks by calculating pressure/temperature relationships, superheat, and subcool. It automatically adjusts for altitude and offers English/Metric units. Easily access favorite refrigerants and supplementary information.


This educational app provides calculations for water flow using friction loss, smooth nozzle, NFA, and Iowa formulas. It's designed for professionals and students needing quick and accurate fluid dynamics computations.


This calculator allows users to input measurements in feet-inch, meters, or millimeters and receive results in the desired units. It offers unit conversion for calculated results and supports sequential calculations using BODMAS logic. Calculations are saved in history and can be exported to PDF.


This app provides comprehensive scuba diving calculations, including basic, nitrox, and trimix gas mixes. It supports both metric and imperial units, and allows for gas volume and cost calculations for blending and top-ups. Results can be easily copied for documentation.