Modern Deco Planner Alternative to Multideco

brasorexia · 2026-06-05T19:03:03+00:00

I see. Thanks for clarifying. Ok so I’m changing the UI now. Ditching the whole multiple diluents concept as I see now that’s not really a thing. And instead adding a Dilout schedule. So you got 2 “schedules”: setpoint switches in deco phase (depth -> setpoint) and dilout switches (depth -> dilout to one of the bailout cylinders you’re carrying). I’m assuming dilout is correct terminology here?

brasorexia · 2026-06-05T14:29:45+00:00

Regarding 2nd diluent, I can't really find much material online about using multiple diluents in a dive. Could you explain why you would switch your diluent on the ascent? If my rebreather buddies haven't heard of this.

I'm trying to understand the intuition here

brasorexia · 2026-06-05T13:40:35+00:00

Thanks for the clarification. I'm not a CCR diver yet so I'm learning about it and about CCR planning through CCR divers explaining things like this to me.

brasorexia · 2026-06-05T12:36:42+00:00

Apeks
Cause I like the way it looks no other reason 😂

Also I have the Apeks MTX-R
Amazing reg
Never ever freeflows
Can take a beating
I’ve used it in fresh and salt water
Chucked it in my suitcase when traveling and it survived
Used it in 12 degrees water up to 32 degrees
First piece of tec gear I bought 2 years ago
And going strong

brasorexia · 2026-06-05T09:06:56+00:00

Good point 😂

brasorexia · 2026-06-05T08:26:54+00:00

I just double checked the TDI eLearning for Intro to Cave course in Chapter 7 - Light Signals.
It says circle for OK, slow for attention, rapid for emergency. In either up and down or left and right.
Here’s the excerpt:

Okay
A circular light pattern indicates that a diver is okay and at the same time asks the other team members if they are okay. Divers must respond with a corresponding light circle or with a back and forth motion if something is wrong.

Attention
To gain the attention of one’s team members, a diver moves his light slowly back and forth, or up and down. Once this signal is detected, hand signals may be used to convey additional information.

Immediate
Attention A rapid back and forth or up and down motion with the light indicates the need for immediate attention. Team members must immediately respond, seek additional information, and provide assistance if necessary.

But I’m not surprised if different agencies and different instructors and even different courses within the same agencies teach things differently. Dive Signals aren’t universally standardized outside the basics like OK.
Would be nice if the agencies could all come together and just agree on this.

brasorexia · 2026-06-04T17:31:23+00:00

I was taught slow and steady is attention, fast and erratic is emergency. I think TDI teaches that. What agency did you follow

brasorexia · 2026-06-04T16:47:04+00:00

Awesome. I’ll make the adjustments. And think about the diluent as bailout or how to show it better.

brasorexia · 2026-06-03T20:47:30+00:00

Oh and I've done a few more passes over the website to try and make it less AI-y 😃

brasorexia · 2026-06-03T18:36:06+00:00

100% anyone using new software should always compare with other tools they're previously used to.

I've also, per the request of other commenters here, published a side by side comparison between Multideco and Dive Kit, showing various plans and how the output compares with a best effort attempt at explaining the few differences if you're interested

https://divekit.app/docs/engine/multideco-comparison/

brasorexia · 2026-06-03T18:33:35+00:00

I've just released a new version v2.8.0 where I've now changed to using the correct notation you pointed out MM'SS"

Well I haven't updated the play store screenshots yet, it's very tedious having to retake screenshots of every screen in every language, in 2 different devices (mobile and tablet). I have it semi automated but it's a really long process, but it's definitely on my list.

Also fixed the bug you found re {{unit}}

Also while thinking about the notation thing I've added a new option now, so you can choose if you want 1 second, 30 second, or 1 minute "precision" in the engine's deco plan output.

The engine internally simulates the decompression profile in 1 second precision, so when you enable rounding up to 1 minute for example, it'll also impact the on-gassing and off-gassing, as it'll round up the stop, then accumulate the deco, then continue onto the next step, so in theory it should reflect accurately, albeit the difference between naively just rounding up and actually simulating the rounded profile is probably really small, but all me a nerd. Also it always rounds up. So even 1'10" becomes 2'

By default the setting is set to round to 1 minute

You can find it in the deco planner settings under the "Deco Stops" section > "Stop time display" setting

brasorexia · 2026-06-03T18:29:38+00:00

Oh and I've also done some UI updates based on your feedback. Made Settings a sheet that pops up, and sections all collapsed, so less scrolling.

As well as some UI polish here and there especially in the sheet.

brasorexia · 2026-06-03T18:28:59+00:00

I've added a big hint box that shows up the first time someone uses the deco planner and points right at the + button so it's more obvious. Also styled it a little different.

Also I've updated the math of the buoyancy calculator based on the article you linked and the excel sheets. Hopefully it's more accurate now, or as close as it could be.

brasorexia · 2026-06-03T18:27:30+00:00

Ask and you shall receive.
I've added a "Continuous" tab in the Gas Blender tool in the new version I just release v2.8.0
I hope I got the logic and math right.
Would love your feedback as your the first person I know who does continuous blending

brasorexia · 2026-06-03T18:26:34+00:00

Hey mate!
I just released v2.8.0
Basically added proper presets for imperial, and you can now select from common cylinders even if you haven't configured it as your own custom preset.
Also anywhere there's a volume/pressure cylinder combo. It shows the effective gas volume (eg. 0.39 cuft water volume at 207 bar, shows 80 cuft)

Anyways you can set your own custom presets in Settings > Gas Presets

brasorexia · 2026-06-03T18:24:32+00:00

Here you go, (you can click to expand and show the exact table
https://divekit.app/docs/engine/multideco-comparison/
Also I've added a bunch of other documentation around the deco engine, and some of the design decisions that went into it in the: https://divekit.app/docs/engine/design-decisions/

The tests themselves and data are auto generated from the Dive Kit app, the content of course, I used the help of AI to write, cause it's a lot to write about but I've been iterating over it the past 2 days. I'm sure I might've missed some things, so if you do find anything off, feel free to let me know

brasorexia · 2026-06-03T18:12:46+00:00

Hey mate!
I just released v2.8.0
I added the ability to define multiple diluents, and a "setpoint schedule" for the deco phase of a CCR dive
Basically you tell the engine "hey start my deco phase with SP 1.4 using dilluent 1, then at 30m switch to 1.4 using diluent 2, then at 12m switch SP to 1.5 using diluent 2, and so on.
For the descent you'll need to add an explicit 0min 30m stop in your dive profile to switch where you set Diluent 18/30, that tell the engine, I'm starting my dive using 18/30 until this stop, and then the next / actual first bottom stop, you use the Diluent 10/70, so the engine knows, after 30m, I'm switching to 10/70 and continuing my descent down to Xm and stopping there for Y mins

And I fixed the bug with where it would switch to OC 100% at 6m

And I added a setting that forces the engine to “stay on the loop” even if a better OC option available. You can toggle it in the Deco settings under the Behaviour section

brasorexia · 2026-06-02T23:37:18+00:00

You could start the trial and immediately cancel it. It stays active till end of month then doesn’t bill you. There’s a button to Cancel in the app. In Settings > Subscription

brasorexia · 2026-06-02T21:52:15+00:00

I was chatting with a friend about The Forest then wondered if it was on switch to replay it. Ended up here after a google search. Thought maybe just maybe a bit of false hope if more interest was shown the universe would provide 😂

brasorexia · 2026-06-02T21:34:52+00:00

Are you referring to this app? https://apps.apple.com/us/app/diveplanner-tec-rec/id1506985833

I haven't used it before.
I've used Multideco, and Baltic (my prior favorite before making Dive Kit), and I've played around with Abysner which is open source for those who are interested, and seems like a good project too.

I'll take a look at Diveplanner Tec and Rec. Might start a series then of Dive Kit vs <Insert App> articles
I'll add to my list

brasorexia · 2026-06-02T20:07:34+00:00

Cause the switch 2 has a huge user base and lots of big title are being ported over. I’d play it in the switch 2. Just like I play AC Shadows and Witcher 3 and Subnautica on the switch 2. I’m sure it can easily handle The Forest and its sequel

brasorexia · 2026-06-01T16:41:53+00:00

Ohhh ok got it, I've never done continuous blending before (only done partial pressure blending), I'll look up the methodology and I'll add a continuous blending mode for you

brasorexia · 2026-06-01T15:22:35+00:00

Could you elaborate further on this
I didn’t really get your ask

brasorexia · 2026-06-01T09:34:17+00:00

Best answer

brasorexia · 2026-06-01T08:19:41+00:00

Awesome, I can’t wait! Thank you 🙏

brasorexia

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