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Dive Toolbox

Onosia
Dive Planner & Gas Blending
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CD flag CD
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175 of 175 storefronts
Content in en-US
Age Rating
4+
Years
Developer
Onosia
Language
EN
+6 More
Size
74.8
MB

Information

Apple ID6759796903
Bundle IDcom.divetoolbox.app
SellerSeller
Min iOS15.0
Min macOS12.0
Device familiesiphone, ipad, ipod
Released2026-04-16
Copyright© 2026 Onosia
WebsiteLink ↗
Privacy policyLink ↗

Preview 2 platforms

iPhone 8 images

iPhone screenshot
iPhone screenshot
iPhone screenshot
iPhone screenshot
iPhone screenshot
iPhone screenshot
iPhone screenshot
iPhone screenshot

iPad 8 images

iPad screenshot
iPad screenshot
iPad screenshot
iPad screenshot
iPad screenshot
iPad screenshot
iPad screenshot
iPad screenshot

What’s New Version 4.2.1

Bugfixes

Description

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

In-App Purchases CD pricing

Divetoolbox Plans Subscription
Premium Monthly · Monthly—
One-Time Purchases
Premium Lifetime—

Capabilities

In-App Purchases

Accessibility

ipadiphonemacrealityDevicetvoswatch

Version history 7 versions

Build 887352460v4.2.12026-06-23 22:05:58
Bugfixes
Build 886959732v4.2.02026-06-15 20:14:07
A safety-focused update for Nitrox and Trimix divers. NEW TOOLS • Gas Density Calculator (free) Compute your breathing mix density at any depth and know exactly when to switch to trimix. Color-coded against the Anthony 2018 / DAN limits (5.2 g/L recommended, 6.2 g/L hard max). Also works in reverse — find the maximum depth for a target density. • ICD Calculator (free) Verify every gas switch against the Doolette 1:5 isobaric counter-diffusion rule. Get an instant verdict, the |ΔHe| / ΔN₂ ratio, partial pressures at the switch depth, and a recommended minimum O₂ when the transition isn't safe. DIVE PLANNER • Automatic ICD ratio check on every gas switch in your plan — no need to leave the planner. • Three new rebreather safety warnings: high setpoint unreachable near the surface, diluent too rich at maximum depth, low-to-high switch too late. DASHBOARD • Three favorite-tool slots. Pin the tools you use the most for one-tap access. Selection syncs across web, iOS and Android. ACCOUNT • Newsletter subscription is now visible in your settings — opt in or out anytime. Every newsletter email also includes a one-click unsubscribe link. Thanks for diving with DiveToolbox. Feedback is always welcome at contact@divetoolbox.com.
Build 886613480v4.0.12026-06-10 19:18:55
Lifelong subscription released
Build 885635265v3.0.72026-05-26 11:20:47
Improving iphone experience on forms
Build 884681797v3.0.62026-05-01 04:27:19
Added referals
Build 884671151v3.0.32026-04-19 06:45:41
Few Bugfix
Build 882866797v3.0.22026-04-17 06:05:46
Premium Monthly

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Availability 175 of 175 storefronts

RegionLanguagePriceRatingsAvgVersion
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AF en-GBFree0—4.2.1
AG en-GBFree0—4.2.1
AI en-GBFree0—4.2.1
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AM en-GBFree0—4.2.1
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Change log 11 changes · CD

✎
releaseNotes updated
Bugfixes
✎
description updated
DiveToolbox — Professional dive planning and gas calculation tools for recreational and technical divers.
✎
subtitle updated
Dive Planner & Gas Blending
✎
name updated
Dive Toolbox
◆
Version 4.2.1 released
Bugfixes
◆
Version 4.2.0 released
A safety-focused update for Nitrox and Trimix divers. NEW TOOLS • Gas Density Calculator (free) Compute your breathing mix density at any depth and know exactly when to switch to trimix. Color-coded against the Anthony 2018 / DAN li
◆
Version 4.0.1 released
Lifelong subscription released
◆
Version 3.0.7 released
Improving iphone experience on forms
◆
Version 3.0.6 released
Added referals
◆
Version 3.0.3 released
Few Bugfix
◆
Version 3.0.2 released
expanded screenshot