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.

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.

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.

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.

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.

Dive Kit 2.8.0 is our biggest update yet, with major upgrades to decompression and rebreather planning, gas blending and buoyancy, plus a top-to-bottom polish of the whole app. DECOMPRESSION & REBREATHER (CCR) - Setpoint schedules: step your CCR setpoint as you ascend (for example 1.4 on the bottom, 1.6 at 6 m) and switch diluents during deco, the way rebreather divers actually run a dive. - Per-level diluents: carry several diluents and choose one per level. Auto now picks the leanest diluent that keeps the loop comfortable and only steps up to helium when it needs to. - Stops to the second: read each deco stop as MM'SS", or switch to whole-minute or 30-second rounding. What the table shows is exactly what the engine modelled. - ppO2 limits by gas: set lean, mid and rich oxygen bands that decide when a gas switches in and how hard it runs, matching MultiDeco-style planning. - Every deco setting is now per-plan and travels in your share link, so a buddy who opens your plan sees exactly what you see. - CCR Defaults is now a full blueprint of your loop config, so a new plan starts exactly how you like it. GAS BLENDING - New Continuous Mode for constant-flow mixing: get the flow ratios and the in-line analyzer readings to expect, with a helium/oxygen injection-order helper. - Automatic bleed calculation, rounded to a readable gauge step. BUOYANCY - A smarter weighting estimate built around your suit (neoprene type and thickness), body size and gear, with automatic salt/fresh conversion. - Plain-language safety advisories: marginal wing lift, wetsuit corking risk and overweighting. - Your setup is now remembered between sessions. CYLINDERS & IMPERIAL UNITS - Imperial divers: cylinders and gas presets now show free gas volume (an AL80 reads about 80 cu ft), and you can pick from a searchable list of common tanks. - New search in the Cylinder Database. POLISH ACROSS THE APP - A refreshed, higher-contrast look with proper dark mode everywhere, built to stay readable in bright sun. - Tap any result in the Gas Analyzer or RMV/SAC to learn what it means in plain language. - Navigable tutorials with a table of contents, and clearer wording throughout. - Better accessibility and bigger safety-critical numbers. These are planning tools. Always analyze your gas, stay within your training, and dive conservatively.

Dive Kit 2.8.0 is our biggest update yet, with major upgrades to decompression and rebreather planning, gas blending and buoyancy, plus a top-to-bottom polish of the whole app. DECOMPRESSION & REBREATHER (CCR) - Setpoint schedules: step your CCR setpoint as you ascend (for example 1.4 on the bottom, 1.6 at 6 m) and switch diluents during deco, the way rebreather divers actually run a dive. - Per-level diluents: carry several diluents and choose one per level. Auto now picks the leanest diluent that keeps the loop comfortable and only steps up to helium when it needs to. - Stops to the second: read each deco stop as MM'SS", or switch to whole-minute or 30-second rounding. What the table shows is exactly what the engine modelled. - ppO2 limits by gas: set lean, mid and rich oxygen bands that decide when a gas switches in and how hard it runs, matching MultiDeco-style planning. - Every deco setting is now per-plan and travels in your share link, so a buddy who opens your plan sees exactly what you see. - CCR Defaults is now a full blueprint of your loop config, so a new plan starts exactly how you like it. GAS BLENDING - New Continuous Mode for constant-flow mixing: get the flow ratios and the in-line analyzer readings to expect, with a helium/oxygen injection-order helper. - Automatic bleed calculation, rounded to a readable gauge step. BUOYANCY - A smarter weighting estimate built around your suit (neoprene type and thickness), body size and gear, with automatic salt/fresh conversion. - Plain-language safety advisories: marginal wing lift, wetsuit corking risk and overweighting. - Your setup is now remembered between sessions. CYLINDERS & IMPERIAL UNITS - Imperial divers: cylinders and gas presets now show free gas volume (an AL80 reads about 80 cu ft), and you can pick from a searchable list of common tanks. - New search in the Cylinder Database. POLISH ACROSS THE APP - A refreshed, higher-contrast look with proper dark mode everywhere, built to stay readable in bright sun. - Tap any result in the Gas Analyzer or RMV/SAC to learn what it means in plain language. - Navigable tutorials with a table of contents, and clearer wording throughout. - Better accessibility and bigger safety-critical numbers. These are planning tools. Always analyze your gas, stay within your training, and dive conservatively.

New - Manage your subscription in-app — see your plan and renewal date, switch to lifetime, renew, or cancel, all from Settings. - Configurable CCR gas planning — set your rebreather's loop volume and metabolic O₂ rate for accurate diluent and O₂ estimates. Find them in the new Gas Consumption settings, with built-in ⓘ help. - Slate export upgrades — add an optional Remaining Gas column, pan the preview sideways on narrow phones, and a cleaner multi-line title (plan / contingency / bailout). - Deco defaults made easy — edit them right from Settings, with a clear explainer of how defaults and per-plan overrides work. - Imperial contingencies — imperial divers get the familiar +10 ft / +20 ft depth buffers. - Learn as you plan — tap the ⓘ on the CCR Diluent / O₂ rows to see how loop gas is estimated. Fixed - Bailout at depth now switches to open circuit exactly at the depth you choose — not at the next stop. - Full Bailout now shows the gas-switch where you leave the loop. - Your custom RMV now affects CCR bailout gas usage. - Correct depth-unit labels on bailout switch depths. - More accurate per-row remaining gas on multi-stop dives.

Fixed imperial unit support in the Deco Planner — feet, psi and cubic feet now display and work correctly throughout.

Two new Deco Planner tools — custom contingency scenarios and a quick deco gas SRMV switcher — plus a cleaner CCR workflow, printable slates, and refinements across the app. DECO PLANNER — NEW - Custom contingency scenarios. Build your own "what-if" right on the plan: pick any gases to lose (including back gas), choose a dive level, and nudge its depth and/or time. Each becomes its own tab next to Base, re-planned by the engine and saved with your plan — replacing the old fixed "lost all deco gas" with exactly the loss combination you care about. - Ascent/deco RMV lens. Recompute gas usage at a higher breathing rate without changing your schedule. Add as many custom rates as you like alongside the planned rate and tap to compare; the rate applies to the ascent and deco stops only, so your stops and runtime never move. DECO PLANNER — WORKFLOW - Drag to reorder. Long-press any dive level or gas row and drag it into place. Reordering levels triggers a fresh schedule; reordering gases is purely visual. - Live edit preview. New rows appear instantly behind the Add/Edit sheet and update as you type; the stops table and graph stay frozen until you close the sheet — no flicker, no waiting. - Customisable CCR defaults. Set your own setpoints, switch depth, and O2 / diluent cylinder seeds in Edit Defaults, used the first time you enable CCR on a fresh plan. - Your CCR edits stick. Disabling and re-enabling CCR restores your last rig setup instead of wiping it. - Air breaks on the loop. New opt-in toggle to apply oxygen breaks while breathing the CCR loop (off by default). - Lower default CCR setpoints — new rigs seed at 0.7 / 1.0 / 1.2 (Descent / Bottom / Deco). - Diluent remaining now shows on CCR loop rows instead of being blank. - "Add Gas" defaults to a single tank; the bottom gas still defaults to a twinset. - Configurable Minimum PPO2 warning floor (0.16–0.21 bar) for catching hypoxic mixes. SHARING & SLATES - Printable A6 slates. PNG and PDF exports now target A6 (105 x 148 mm) — a standard size you can print, trim, and laminate. Long plans paginate cleanly with the column header repeated on every page. - Reorganised slate layout adds "Turn Time" (the runtime at which you hit ascent pressure) and always shows OTU + CNS. - Share up to 16 cylinders. The share/QR link cap rose from 8 to 16, so dense tech rigs share without dropping the tail. - Plan cards now show the least rich gas (lowest O2%) in XX/YY notation — the gas that defines the dive's depth. ACROSS THE APP - Gas mode setting removed. The hidden rec / tec / trimix toggle is gone — every calculator exposes the full range out of the box. - RMV is now "SRMV" (Surface RMV) everywhere. Same number, clearer label, unified across all languages. - "Loop Config" renamed to "CCR"; "Water Type" relabelled to "Water Density" where it controls density. - Onboarding asks which planner you used before Dive Kit — migrating from Multideco or Baltic matches the time semantics you're used to. - Update prompts now show a "What's New" summary, and Submit Feedback opens a quick form. FIXES - Lost-gas contingencies could remove and mislabel the wrong cylinder — now fixed. - The ICD (isobaric counter-diffusion) check now uses the correct 1:5 Rule of Fifths, so helium step-downs no longer false-alarm. - END warning no longer fires on rounding noise (an END of 30.4 m against a 30 m limit when both display as 30). - Certifications: tapping a card opens the carousel focused on that card on iOS. - Bailout "Add Depth" input is readable in dark mode; section info sheets clear the home-bar gesture area. UNDER THE HOOD Upgraded for faster startup and lower memory use. Now requires iOS 16 or later.

The Deco Planner has been redesigned. - Streamlined editing flow and a cleaner UI — easier to navigate from profile to gases to results. - Define your dive profile first; the app now auto-links the right gas to each level. - New sticky stats bar at the bottom keeps TTS, deco time, CNS and gas usage visible at all times. - Explanations, tooltips and hints added throughout the planner. - Add a 0-minute stop to your profile to mark a gas switch. - Gas switch time now applies to profile gas changes, not just the deco phase. - More descriptive warning messages. - Various bug fixes and edge-case improvements in the deco engine. - Visual polish throughout.

New • Deco Planner: "Include travel in level time" toggle — each segment's time now covers its travel (matching MultiDeco), available per-plan or as a default. • Deco Planner: O2 as Narcotic, and the new travel toggle are now grouped under a "Behaviour" section. • Profile: Insurance expiration indicator — amber dot within 30 days, red dot once expired. Improved • Deco stop-size options are now {3 m, 6 m, 9 m} — all on the natural Bühlmann grid. • Deco stops are ceiling-rounded to whole minutes — you'll always hang at least as long as the engine planned, never less. • Deco table preserves half-meter precision (e.g. 4.5 m stops display as "4.5m"). • Minimum deco stop time is now set in whole minutes (1–5) instead of seconds. • Cleaned up the Settings top-level screen — removed the redundant back arrow. Fixed • Profile photo no longer disappears after saving on iOS. • Header titles and hand-signal names now follow your in-app language change without needing a restart. • Gas Blender cylinder switcher no longer shows white text on a white background. • Same white-on-white fix applied to toggle groups in Gas Blender, Gas Planner, RMV/SAC, Unit Converter, and plan/gear pickers. • Certification cards: tapping a card in the list now opens that card (was opening the first card on iOS). • Deco table no longer shows fractional minutes in the bottom row. Deco engine (safety) Redesigned stop-depth logic so your configured last stop (e.g. 3 m) is always honored — even when using wider step sizes (6 m or 9 m) or switching to 100% O2 at 6 m. Previously some combinations could silently skip the last stop or switch gas at the surface. Verified against all MultiDeco cross-validation scenarios.

Various bug fixes and stability improvements

Various bug fixes and stability improvements

- Performance and stability improvements to inputs throughout the app - Fixed calculation errors with Best Mix tool in Trimix mode - Showing additional MOD stats in the CCR configuration box in Deco Planner - Added hypoxic gas warnings to Deco Planner and Best Mix tools - Fixed issue with Deco Planner not correctly using water salinity setting - Deco Plane share URLs are now measurably smaller

- CCR Decompression Planning - Plan CCR dives with setpoint management and full bailout planning with open-circuit gas switching. - Plan Variants - Save and compare multiple deco plans side by side with color-coded tabs and graph overlays. - 10x Faster Deco Engine - Dramatically faster dive plan calculations. - Gas Tank Profiles - Save your favorite gas mixes and cylinders for quick reuse in any tool. - Multi-Cylinder Gas Blender - Manage multiple cylinders in one session. - Deco Plan Air Breaks - Configure oxygen breaks during decompression stops. - Trimix Best Mix calculator and new Trimix tutorials. - New dive profile graph. PPO2 and CNS tracking per deco stop. - Configurable O2 narcotic setting. Tool onboarding cards. Visual improvements throughout.

- Plan Variants - Save and compare multiple deco plans side by side with color-coded tabs and graph overlays. - 10x Faster Deco Engine - Dramatically faster dive plan calculations. - Gas Tank Profiles - Save your favorite gas mixes and cylinders for quick reuse in any tool. - Multi-Cylinder Gas Blender - Manage multiple cylinders in one session. - Deco Plan Air Breaks - Configure oxygen breaks during decompression stops. - Trimix Best Mix calculator and new Trimix tutorials. - New dive profile graph. PPO2 and CNS tracking per deco stop. - Configurable O2 narcotic setting. Tool onboarding cards. Visual improvements throughout.

- Trimix support for Gas Blender & Mix Calculator — full trimix/heliox blending with helium - Duplicate existing deco plans with one tap - "Plan Next Dive" button — quickly create repetitive dives from your current plan - Plan cards now show Run Time, TTS, and CNS stats with color-coded warnings - Repetitive dive chains are visually grouped on the plan list - Share QR codes as images via the system share sheet - Deco plan results are now cached — reopen plans instantly - Gear buoyancy uses a Sinks/Floats toggle for easier input - Gas weight shown at fill pressure and 50 bar reserve in buoyancy calculator - Larger, bolder input text for better readability - Improved buoyancy accuracy with updated cylinder, regulator, and rigging values - Renamed "Turn Pressure" to "Ascent Pressure" and "Total Time" to "Run Time" - Tutorial glossary with key abbreviations (TTS, RT, AP, CNS, OTU)

* Customize the home screen tool order * Polish language support * Floating quick stats bar in the mobile deco screen * Improved tablet layout for the plan page

Decompression Planner now available

New modern and clean design

This update introduces two major new tools to your toolkit: • NEW: Buoyancy Calculator Stop guessing your weight. Our advanced physics engine now simulates your buoyancy across the entire dive. - Check if you can sink at the start AND hold your safety stop at the end. - Accounts for gas weight, water salinity, and specific cylinder specs. - Verify you can swim up your rig if your wing fails. • NEW: Dive Signals Reference A comprehensive, searchable library of dive signals right in your pocket. - Includes Recreational, Technical, Light, and Touch signals. - Find any signal instantly with smart search. - Perfect for students and instructors reviewing before a dive. We've also made improvements to the Gas Blender for better accuracy and optimized the app for even faster performance on older devices.

New app icon

- New icons for each tool - Renamed tools to be simpler and more obvious - Now always showing END and Gas Density measurements in "EAD, PPO2, ..." tool - Can now specify your insurance "plan" in profile settings - Can now copy insurance number - Added ISC agency and their certifications; Added 12L aluminum tank

• Updated gas mix labels to standard EANx notation (e.g., EANx32) • Enhanced certification storage for better reliability • Fixed padding and spacing issues throughout the app • Improved dropdown input interactions • Better text input behavior for dive centres • Enhanced app update handling This update focuses on polish and stability improvements.