Skuba

Plan. Dive. Explore.

Free · In-App Purchases · Designed for iPad

New Decompression Planner! SKUBA — Dive Planning Tools for Your Pocket The professional diving toolkit built for use on the boat, before you jump. Works offline, designed for wet thumbs and bright sunlight. Whether you're a recreational diver checking your first Nitrox MOD or a technical diver planning a 100m trimix dive, Skuba delivers precise calculations in under 30 seconds—no signal required. WHY DIVERS CHOOSE SKUBA • 100% Offline — Works everywhere. No connection needed. • Boat-Ready Design — High-contrast UI, large buttons, wet-thumb friendly. • Physics-Based Accuracy — Real-world corrections for temperature, salinity, gas behavior. • Zero Distractions — No ads, no fluff. Just tools. ESSENTIAL CALCULATORS Best Mix & Analyzer Find the optimal Nitrox blend for your target depth. Instantly calculate EAD, END, and PPO₂ for any mix at any depth. Gas Usage Planner Estimate how much gas you'll need based on your SAC/RMV rate. Built-in Rock Bottom, Rule of Thirds, and Rule of Sixths calculators. SAC/RMV Calculator Track your breathing rate across multiple dives. Identifies your consumption patterns so you can plan better. Buoyancy Calculator Stop guessing how much lead you need. Our physics-based simulator checks if you can sink at depth, hold your safety stop at 5m, and swim up your rig if your wing fails. Accounts for gas weight, water salinity, and cylinder specs. ADVANCED GAS BLENDING Gas Blender (Nitrox & Trimix) The most accurate gas blending calculator for your phone. Get step-by-step fill instructions accounting for Van der Waals forces, "hot fills," and partial-pressure mixing. Supports top-offs and continuous blending. Mix Calculator Need to combine two gases? Calculate the final mix when decanting or top-filling. Supports oxygen, helium, and banked mixes. DECOMPRESSION PLANNING (PRO) Multi-Gas Deco Planner Plan complex technical dives with unlimited deco gases. Visual dive profile, printable tables, QR code sharing. Bühlmann ZHL-16C with gradient factors. Export to slate format. • Supports Air, Nitrox, Trimix, Heliox • Multi-level profiles • Gas consumption tracking • CNS/OTU monitoring • What-if scenarios (lost gas, extended bottom time) DIVE SIGNALS REFERENCE Forget a signal? Look it up instantly. Visual library with clear illustrations for Recreational, Technical, Light, and Touch signals. Smart search—type "shark" or "out of air" to find it. UTILITIES & DATABASE • Cylinder Database — Specs for 100+ tanks worldwide (AL80, S80, LP85, etc.) • Unit Converter — Seamlessly convert depth, pressure, volume, temperature WHO IS THIS FOR? • Recreational divers wanting safe, verified Nitrox calculations • Technical divers managing complex gear and multi-gas profiles • Instructors demonstrating theory on the boat • Gas blenders needing precise fill plans • Anyone who wants their dive tools to work without cell service SAFETY NOTICE Skuba is for planning and education only. It is not a substitute for proper training, certification, or a dive computer. Always verify critical information with certified professionals and dive within your limits. --- Built by divers, for divers. No spreadsheets. No guesswork. Just fast, accurate tools when you need them most.

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Decompression Planner now available

Version 2.2.0

The developer, RONNY MAJANI, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Identifiers
    • Usage Data
    • Diagnostics

Privacy practices may vary based, for example, on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

  • Provider
    • RONNY MAJANI
  • Size
    • 70.3 MB
  • Category
    • Utilities
  • Compatibility
    Requires iOS 15.1 or later.
    • iPhone
      Requires iOS 15.1 or later.
    • iPad
      Requires iPadOS 15.1 or later.
    • iPod touch
      Requires iOS 15.1 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
  • Languages
    English and 4 more
    • English, German, Russian, Swedish, Turkish
  • Age Rating
    4+
  • In-App Purchases
    Yes
    • Decompression Planner $24.99
    • Skuba Tools Pro Monthly $4.99
    • Tip $0.99
    • Learn More
  • Copyright
    • © 2026 Ronny Majani
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

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