Best Scuba Tank Capacity Apps

204+ iOS apps curated and reviewed

4.5 avg rating

20 free apps

Updated May 2026

If you already know Scuba Tank Capacity, this is the deeper bench. 204+ scuba tank capacity apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of May 2026.

Top Picks for Scuba Tank Capacity

#1

Scuba Tank Capacity by Anthony Dupre

Accurate tank gas volumes

Editor's Choice

⚽ Sports

0.0(0 ratings)

Free

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#2

Scuba Diving Computer Oceanic+ by Huish Outdoors, LLC

Snorkel & Dive Log Tracker

Strong Contender

⚽ Sports

4.4😐(4.3K ratings)

FreeAdsIn-App Purchases

#63in Sports

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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.

What We Love

🚀 Bright, clear display
👍 Intuitive and easy to use
🚀 Detailed dive logs and analytics
👍 Helpful safety alerts and vibration feedback

Room to Improve

🔒 Subscription-based model
🐛 Syncing issues between watch and phone
🐛 Unreliable dive mode activation

#3

Aquarium Guide - Tank Planner by Tayson Nguyen

Tank Manager, Planner & Guide

Worth Considering

🔍 Reference

4.2😐(14K ratings)

FreeIn-App Purchases

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This app helps aquarium owners plan their tanks and avoid common mistakes. It checks fish compatibility and tank stocking levels, offering information on over 1000 fish species. You can save and share your aquarium setups.

What We Love

👍 Helpful for beginners
📊 Provides useful information about fish
🗂️ Good for tracking aquarium setup
🎨 Visually appealing interface

Room to Improve

🔒 Locked features require payment
🔍 Limited fish and plant selection
🔢 Inaccurate tank size recommendations

More Scuba Tank Capacity apps to explore

by Reseau sans fil Otodata Inc

Instantly view real-time tank levels on your smartphone, eliminating guesswork. Track usage history, receive low-level alerts, and easily request refills from your fuel supplier. Manage multiple tanks and share access with others.

Real-time tank level trackingUsage history consultationConfigurable low-level notifications

by SSI International GmbH

Access digital training materials, certifications, and a digital logbook for various diving disciplines. Track dive progress, manage gear, and earn ratings. Connect with dive centers and stay updated on industry news and events.

Digital training materialsDigital certificationsDigital logbook

free with in-app purchases

DIVEROUT - Dive Computer

DIVEROUT - Dive Computer

Scuba, FreeDiving, Snorkeling

This app transforms your Apple Watch into a comprehensive dive computer for scuba, freediving, and snorkeling. It offers AI-powered color correction for underwater photos and videos, advanced freediving training tools, and a community for connecting with other divers.

Apple Watch dive computer functionalityAI underwater photo/video color correctionFreediving training and testing

free with in-app purchases

by Garmin International

This app serves as a comprehensive diving logbook and planning tool. It automatically records dive data, tracks gas consumption, and supports various diving disciplines. Users can also discover dive sites, manage gear, and share experiences with a community.

Automatic dive loggingGas consumption trackingSupport for multiple dive types

Bulk Reef Supply

Bulk Reef Supply

Saltwater Aquarium Supplies

This app provides a curated selection of saltwater aquarium supplies and educational resources. It features reef calculators to simplify tank maintenance and offers a wide range of products for creating a thriving aquatic habitat. Expert customer support is also available.

Curated aquarium suppliesEducational videos and articlesReef calculators (water volume, sand, costs, additives)

🛍️ Shopping

SCUBA Weight Estimator

SCUBA Weight Estimator

Volume of tank Calculator Pro

Volume of tank Calculator Pro

by AdityaKumar Patel

Conversion Calculator !

Conversion Calculator !

Currency, Temperature, Length

Easily convert between various units of measurement, including currencies, temperature, length, and weight. This intuitive tool provides real-time currency exchange rates and a comprehensive list of conversions for everyday use.

Real-time currency conversionsExtensive unit categories (weight, temp, length, volume, etc.)Simple and intuitive interface

free with in-app purchases

Convert Any Unit Lite

Convert Any Unit Lite

Units & Currency Converter

Quickly convert between thousands of units with an intelligent search and autocomplete feature. This app offers a streamlined interface, an integrated calculator, and the ability to save favorite conversions. It supports over 6,400 units across 51 categories, making it a comprehensive tool for all your conversion needs.

Intelligent unit search with autocompleteAutomatic category selectionIntegrated calculator

Pool Math by TroubleFreePool

Pool Math by TroubleFreePool

Easy pool care and maintenance

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.

Chemical level calculators (pH, Chlorine, Alkalinity, etc.)Track pool maintenance tasksLog chemical additions

Tank Volume Calculator App

Tank Volume Calculator App

Tank Volume Simplified Here

This app precisely calculates the volume of numerous tank shapes, including cylindrical, rectangular, and conical. It supports custom densities and offers output in various units like liters, cubic meters, and gallons. Designed for professionals and enthusiasts, it simplifies complex calculations with a user-friendly interface.

Diverse tank types (vertical, horizontal, elliptical, etc.)Customizable density inputMultiple output units (liters, m³, gallons, kg)

free with in-app purchases

Nitrox/Enriched Air Calculator

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.

Calculate MOD, EAD, Best Mix, PPO2Imperial and metric unit supportSea and fresh water options

free with in-app purchases

Dive Calculator

Dive Calculator

by Zanthic Automation Inc.

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.

Basic, Nitrox, and Trimix calculationsGas volume and cost calculationsTop-up and bleed down mix calculations

Aquarium Manager: Tank Log

Aquarium Manager: Tank Log

Fish, plant & water keeping

Manage and monitor freshwater or marine aquariums with detailed tracking of fish, plants, and equipment. Log water parameters, visualize trends with charts, and maintain a history of all tests and measurements. Plan and receive reminders for maintenance tasks and important events.

Unlimited aquariums and tanksDetailed fish, invertebrate, and plant trackingEquipment management

free with in-app purchases

Diving Log - Scuba Logbook

Diving Log - Scuba Logbook

Log Book App for Scuba Diver

Record your scuba diving activities, including dive data, weather conditions, and photos. Create visual "DiveLines" of your underwater experiences and share them with friends. An optional add-on allows for additional features and ad removal.

Logbook and DiveLine creationLocation tracking for divesCSV and image file export

free with in-app purchases

by Head Watersports S.p.A.

Transform your Apple Watch Ultra into a dive computer, recording dives directly on your wrist. Log scuba, freediving, and technical dives, manage dive sites, and track underwater wildlife sightings. Share your adventures with dive buddies and keep your equipment details organized.

Apple Watch Ultra dive computer integrationDigital dive logbookDive site database and management

free with in-app purchases

HVACR Check & Charge

HVACR Check & Charge

PT Charts Superheat Subcooling

This app provides an instant mobile refrigerant charge calculator for HVACR applications. It supports various refrigerants and allows users to calculate the correct system charge based on superheat, subcooling, or airflow, along with environmental conditions.

Instant refrigerant charge calculatorSuperheat calculator (non-TXV)Subcooling calculator (TXV)