Supported Features
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Dark Interface
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Differentiate Without Colour Alone
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Reduced Motion
Dive Toolbox
Dive Planner & Gas Blending
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
DiveToolbox — Professional dive planning and gas calculation tools for recreational and technical divers.
DECOMPRESSION DIVE PLANNER
Plan single-level and multi-level dives using the Bühlmann ZH-L16C algorithm with configurable gradient factors. Get detailed ascent profiles, gas switch schedules, and comprehensive safety analysis including CNS, OTU, gas density, and END
monitoring.
GAS BLENDING CALCULATOR
Step-by-step fill instructions for Nitrox and Trimix blending. Supports partial pressure and continuous flow methods with real-time MOD calculations.
MOD / EAD / END CALCULATOR
Instantly calculate Maximum Operating Depth, Equivalent Air Depth, and Equivalent Narcotic Depth for any gas mix.
GRADIENT FACTORS EXPLORER
Visualize how GF Low and GF High affect no-decompression limits and decompression schedules.
SAC RATE CALCULATOR
Calculate your Surface Air Consumption rate from dive data to improve gas planning accuracy.
ROCK BOTTOM CALCULATOR
Determine minimum gas reserves for safe ascent, including emergency scenarios with configurable safety margins.
SUCCESSIVE DIVE PLANNER
Plan repetitive dives accounting for residual nitrogen and helium tissue loading from previous dives.
UNIT CONVERSIONS
Convert between metric and imperial units for depth, pressure, volume, and temperature.
KEY FEATURES
• Multi-gas support with automatic deco gas switching
• Save and organize dive plans in folders
• Save tank presets for quick planning
• Share plans via link or QR code
• Export plans as PDF
• Customizable diver profile (GF, SAC, PPO2, speeds)
• Dark and light themes
• Available in 7 languages: English, French, German, Spanish, Italian, Polish, Russian
Terms of Use: https://divetoolbox.com/en/terms
Privacy Policy: https://divetoolbox.com/en/privacy
Ratings & Reviews
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Bugfix
The developer, Onosia, 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 Linked to You
The following data may be collected and linked to your identity:
- Contact Info
The developer indicated that this app supports the following accessibility features. Learn More
Information
- Provider
- ONOSIA
- Size
- 85.5 MB
- Category
- Sports
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 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.
- iPhone
- Languages
English and 6 more
- English, French, German, Italian, Polish, Russian, Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Premium Lifetime 29,99 €
- Premium Monthly 4,99 €
- Copyright
- © 2026 Onosia