# Dive Kit: Deco Planner & Tools — Trimix, CCR & nitrox planning

> Comprehensive dive planning and free utilities for scuba divers. (iPhone/iPad app by RONNY MAJANI.)

- Source: https://appshunter.io/ios/app/dive-kit-deco-planner-and-tools/id6753089545 (this page in markdown: same URL + `.md`)
- Developer: [RONNY MAJANI](https://appshunter.io/developer/1842415083)
- Category: Sports, Reference
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 5 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.4 · 122 MB
- Languages: American English, German (Germany), Polish, Russian, Chinese (Simplified, China), Swedish, Turkish
- Released: 2025-10-01
- Data updated: 2026-08-27
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/dive-kit-deco-planner-and-tools/id6753089545/reviews.md

## What is Dive Kit?

A full deco planner in your pocket, and a free toolkit for the rest of the dive.

Dive Kit plans open-circuit, trimix, and CCR dives with Bühlmann ZH-L16C and the gradient factors you choose. You see every assumption behind a schedule, and a share link reopens the exact plan on your buddy's phone or in any browser.

Everything runs offline. The display stays readable in direct sun, the controls suit cold, wet hands, and routine tasks take seconds.

DECO PLANNER (PREMIUM)
The one tool you pay for.
- Multi-level profiles with automatic gas switching and unlimited segments
- CCR: depth-keyed setpoint schedules, diluent switches during deco, and a full open-circuit bailout from any point in the dive
- Stop times to the second (MM'SS"), or rounded to the minute or 30 seconds; the table always matches the engine
- PPO₂ caps per gas by O₂ content (lean, mid, rich bands), so each gas switches in where its PPO₂ allows
- Contingencies: deeper, longer, lost gas, or build your own
- Per-stop PPO₂, CNS% and OTU, gas density, and consumption per cylinder with reserve warnings
- Oxygen breaks on long O₂ stops
- Repetitive dives with tissue loading carried across the surface interval
- Share by QR code or link; every setting travels with the plan
- Export deco tables and printable slate images
- Compare plan variants side by side with graph overlays

ELEVEN FREE TOOLS
No ads, nothing behind a sign-up.
- Best Mix / MOD: nitrox and trimix, helium chosen by END, with oxygen-narcotic and density limits
- Gas Analyzer: EAD, PPO₂, END, and gas density with color-coded warnings
- Gas Usage: multi-level consumption, rule of thirds or sixths
- SRMV / SAC: your real breathing rate from a logged dive, doubles and sidemount included
- Buoyancy & Weight: weighting from suit, body, gear, and water type, with lift and overweighting advisories
- Gas Blender: partial-pressure and continuous blending with real-gas corrections and expected analyzer readings
- Checklists: build your own pre-dive routines, with timers that survive closing the app
- Mix Result, Unit Converter, and more
- Cylinders entered the way you name them: 80 cu ft at 3000 psi in imperial, litres in metric

REFERENCE & LEARNING
- 90+ illustrated, searchable dive signals
- 35+ cylinder specifications from real manufacturer data
- Tutorials on gas physics, decompression theory, and trimix
- Tap any result for what it means and why it matters

CERTIFICATION WALLET
25+ agencies, 190+ certifications, and a diver profile with insurance and emergency contacts.

BUILT FOR THE BOAT
- Fully offline, on phones and tablets
- Exact decimal math in every gas number
- Seven languages: English, German, Turkish, Swedish, Russian, Polish, Simplified Chinese
- Light, dark, and automatic themes

No ads. No account. Your dive data stays on your device, and the optional usage analytics can be switched off in Settings.

Dive Kit helps you plan and check your numbers. It does not replace training, certification, or your own judgment in the water. Analyze your gas, dive within your limits, and plan conservatively.

PRICING
The Deco Planner is the only paid tool: a one-time lifetime purchase or a subscription. Everything else is free, for everyone.

Built by a technical diver, shaped by recreational, trimix, and rebreather divers, and instructors.

Privacy Policy: https://divekit.app/privacy-policy/
Terms of Service: https://divekit.app/terms/
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

- Open-circuit, trimix, and CCR dive planning
- Automatic gas switching and unlimited segments
- Offline functionality
- Free dive utilities (gas analysis, usage, buoyancy)
- Dive signals and cylinder specifications
- Certification wallet
- Multi-language support

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Skuba Tools Pro Monthly | $4.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Tip | $0.99 | one-time |
| Decompression Planner | $24.99 | one-time |


## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/dive-kit-deco-planner-and-tools/id6753089545/reviews.md

### 5/5 — Das Tool ist der Hammer

*2026-06-15*

Endlich ein Tool das alles kann was man beim Tauchen benötigt. Genial sind such noch die Hilfefunktionen und Erklärungen

**Developer response:** Vielen Dank für das tolle Feedback! Ich weiß die netten Worte sehr zu schätzen.

### 5/5 — Must have for dive planning!

*2026-02-06*

At last a beautifully crafted, well designed, and 100% functional dive planning app. 

It comes with all the features you would expect of a tech-rec planner (gases, mixes, intel) but most importantly the decompression planning module ties all the functions together into a cohesive package. 

My personal favourite is the ability to share your dive plan seamlessly with your buddies so that you are all on the same page when planning your next adventure.

**Developer response:** Thanks Maciej. Truly appreciate the feedback!

### 5/5 — Very unique design

*2025-10-29*

Ive used it this twice already and I can 100% rely on the calculations used in the app. Also kudos to the designer for the refreshing UI

**Developer response:** Thanks for the review! Very kind words. As always if you have any ideas you'd like to see in the app please share your feedback through the app.

### 5/5 — Insane and very user friendly

*2025-10-29*

I’m learning to skuba dive now and my instructor showed me this app. Honestly, makes all the calculations so much easier!

**Developer response:** Thank you! And I'm very excited for your new scuba journey. I'm sure you'll love it!!!

### 5/5 — Huge time saver

*2025-10-11*

I used to do these calculations by hand, this makes planning for dives sooo easy

**Developer response:** Great to hear that. Hopefully you enjoy the other features like the dive log when it comes out.

## Frequently asked questions about Dive Kit

### What is Dive Kit?

Dive Kit is a mobile application designed for scuba divers. It offers a comprehensive deco planner for various dive types and a suite of free tools for gas analysis, usage, and buoyancy calculations. It also includes educational resources and a certification wallet.

### Does Dive Kit have ads?

No, Dive Kit is ad-free. The description explicitly states 'No ads, nothing behind a sign-up' for its free tools, and the premium features are a one-time purchase or subscription.

### Is Dive Kit available offline?

Yes, Dive Kit is fully offline, making it suitable for use in remote diving locations without internet access. All planning and tool functionalities work without a connection.

### What dive planning methods does Dive Kit support?

Dive Kit supports Bühlmann ZH-L16C with user-defined gradient factors for open-circuit, trimix, and CCR dives. It allows for multi-level profiles with automatic gas switching and unlimited segments.

### What are the free tools included in Dive Kit?

The free tools include a Best Mix/MOD calculator, Gas Analyzer (EAD, PPO₂, END), Gas Usage calculator, SRMV/SAC calculator, Buoyancy & Weight calculator, Gas Blender, and customizable Checklists, among others.

### How does the premium version of Dive Kit work?

The premium version, called 'Skuba Tools Pro', is available via a monthly subscription at $4.99, which includes a free trial period. It unlocks advanced features like multi-level profiles, CCR planning with open-circuit bailout, and detailed per-stop calculations.

### What devices is Dive Kit compatible with?

Dive Kit is designed for phones and tablets and is compatible with iPhone, iPad, and iPod devices. It offers light, dark, and automatic theme options for readability.

### How often is Dive Kit updated?

The app was last updated on June 12, 2026, indicating active development and support. Users can expect regular updates to improve functionality and add new features.

## Version history (last 5 releases)

### 2.8.7 — 2026-08-14

This release focuses on planner accuracy and clarity, driven by feedback from technical divers.

Deco Planner
- Auto gas now looks ahead on the descent: a shallow first level will never pick one of your deco gases on the way down, and your lost-gas contingencies stay complete.
- The dive table shows gas switches at the exact depth you make them.
- Settings are organized in two tiers: the three sections you use while planning up front, everything else in a collapsed Advanced group that highlights when a plan overrides your defaults.
- Simple setpoint view for CCR rigs that run one setpoint plus deco. The full stepped schedule is one tap away.
- "Reset all" now reliably resets every overridden setting.

Gas tools
- Safety alerts lead with what is wrong ("Gas density too high") instead of a generic "Error" heading.
- The ambient and fill temperature fields line up properly in the Gas Blender and Mix Result.

Buoyancy
- New DSMB preset and a lighter spool preset.

Plus many smaller fixes and refinements throughout.

### 2.8.5 — 2026-06-12

A precision pass on the gas math, a fresh look, and a new language.

Your tank, by the spec sheet
Imperial cylinder capacities now use the exact convention US manufacturers print: real gas at 1 atmosphere and 70 °F. An AL80 reads 77.4 ft³, matching Luxfer's published figure, and the capacity field now accepts decimals, so you can type the spec-sheet number and get exactly that tank.

Sharper gas math
- Plans at altitude now compute gas use from the real surface pressure (it was anchored at sea level, overstating stop gas at altitude).
- CCR: staged descents now charge the loop the correct diluent. Deeper legs were under-counted before.
- Shared plans carry exact cylinder sizes, so the recipient sees precisely the plan you sent.
- Buoyancy gas weights and the SAC readout were refined.

A new look
The bottom tab bar is now a compact floating glass pill that picks up each tool's color as you move around the app, and the deco planner's stats bar floats just above it. Content scrolls beneath both through frosted glass.

Now in Simplified Chinese
The entire app: every tool, tutorial, checklist, and dive signal.

Deco stop schedules are unchanged by this update.

### 2.8.4 — 2026-06-11

Enter cylinders the way you name them. Every cylinder field now speaks your sizing language. Imperial divers enter capacity and working pressure, so an AL80 is simply 80 ft³ at 3000 psi, and Dive Kit derives the water volume through its real-gas model. Metric entry stays water volume in liters. A hint under the fields always shows the computed counterpart, and both pressure fields carry a (?) explaining the difference between a tank's rating and today's fill. This fixes a bug where typing "80" into the old water-volume field silently created a 99-liter cylinder, so the plan reported impossible numbers like 668 ft³ remaining.

Simpler CCR bailout planning. The separate bailout SAC settings are gone. Bailout consumption now follows your Deco SRMV, and bailout schedules always run your plan's gradient factors, so one set of settings drives the dive and its escape. Bailout warnings now also honor your custom CNS, OTU, and gas density thresholds. Note: bailout gas figures change with this release — use the ascent/deco SRMV selector to size bailout for a stressed exit.

Redesigned gas consumption cards. Each cylinder card now reads at a glance: the gas and its Used figure on top, the bar, and a labeled Remaining line in the warning color below. Volumes are larger and dot-separated from pressure, so divers who think in cubic feet are no longer squinting. One (?) on the section title explains every figure, including how CCR loop cylinders are estimated.

Shared plans carry your cylinder ratings. A shared imperial plan now shows the recipient the same "80 ft³ at 3000 psi" you entered.

A cleaner, more trustworthy deco planner. On the deco graph and shared web preview, the dive line could be drawn a meter or two shallower than the decompression ceiling during the ascent, so a correct plan looked like it was breaching its own limit. The schedule and ceiling were always right; the graph now lines up with them, and the table's Run column now matches the standard ZH-L16C run times at each stop. Stop and Run columns also follow one rule across a plan, so a table never mixes 25' and 25'06" row to row, and the text and PNG slates auto-size their columns so seconds-bearing and CCR exports stay neatly aligned.

Dive safe.

### 2.8.3 — 2026-06-10

NEW TOOLS
- Decant mode in Mix Result and Blend Planner. Top a cylinder off from another with just a transfill whip, no bank or compressor. Mix Result gives the mix and pressure each cylinder settles at; Blend Planner gives the pressure to fill the receiver to, and shows the reachable mix range when your target is out of reach.
- Three new checklist presets: a recreational Predive safety check (BWRAF), an Open-circuit tech predive, and a Tech dive plan review. Vendor-neutral, in dual units.
- Help where you need it. Every tool card now has a (?) button explaining what the tool does and when to use it, and the input sections in Mix Result and Blend Planner explain what each part is for.

MORE ACCURATE GAS MATH
- Cylinders now show the gas they really deliver. Dive Kit moved from the ideal gas law to a real-gas (compressibility) model built from NIST reference data for oxygen, nitrogen, and helium. A high-pressure cylinder holds a little less than the simple pressure-times-volume rule claims, so an "AL80" now reads about 79 cu ft. Each cylinder also carries its true water volume.
- Gas mixing and blending use the same real-gas model. For nitrox the difference is tiny, but for trimix it matters: helium is the least ideal gas, and an oxygen analyzer cannot catch a helium error. Always analyze your blended cylinder and set its measured oxygen before diving.

DECO PLANNER
- Clearer diluent labels on CCR dilout plans, with a short legend explaining the notation.
- New CCR plans default to 3 L cylinders at 232 bar.
- Plans now always reopen on the base schedule, so the view chips and the table never disagree.
- Fixed a ceiling band that could draw deeper than the dive profile near the end of a dive (the stop schedule was always correct; only the drawn band was off).

CLEANER SCREENS
- Plan home cards show just the icon and title, with the (?) for the full explanation. Search still matches the old descriptions.
- Tidier Mix Result and Blend Planner layouts, and gas names read the same everywhere (32/0, 21/35, Air).
- The continuous blender shows its mixing-panel diagram for nitrox too.
- Water density is one setting, with a help sheet listing each option's approximate density.

ALSO
- A friendlier way to rate Dive Kit, shown only after a genuine win, with a feedback link always available.
- Fixes and polish: the Gas Blender's Edit Bank sheet now stays above the keyboard while you type, the Rate button reliably opens the store, plus checklist and settings tidy-ups and dependency updates for stability.

Dive safe.

### 2.8.2 — 2026-06-06

Checklists: a new free tool
Build and run your own dive checklists, from a rebreather build to a pre-dive or team check to post-dive care. Steps can carry a countdown or stopwatch (timers keep running even if you close the app) and a notes field for values like cell mV. A countdown alerts you the moment it finishes and opens the step. Start from six presets (JJ-CCR, GUE CHAOS, GUE EDGE, post-dive) or a blank list.

Number entry
Typing a comma decimal like 1,3 now works on every keypad. A new decimal separator setting shows numbers as 1.3, 1,3, or follows your device.

CCR decompression
The diluent model is reworked to match how real rigs are carried: below a depth you choose, switch to breathing a bailout through the loop (a dilout), with honest per-cylinder gas accounting. A niche technical-CCR feature.

Fixes
Number fields no longer get stuck rejecting input, editing a gas or dive level no longer leaves a duplicate row, and the cylinder database gained the EU 232 bar CCR bottles and the Faber 12L.

## Related topics

[trimixblending](https://appshunter.io/ios/topics/trimixblending)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*