Free Decompression software.

[the_dumper]

Hi all
Can anyone recommend decent decompression software for use on the PC and a website to download it from.
Preferably for use with air and Nitrox and free, or is it true that you don't get anything for nothing?
Thanks in advance.

[flw]

I like Gordon's dd planner - which it did take a while to work out can be ( or was last time I looked) on www.drogon.net
Others which are share-ware are vplanner, which I've used shallow, but not deep, zplanner if its still available and GAP

[Charlie99]

V-Planner (http://www.hhssoftware.com/v-planner/index.html) is a dual phase (bubble model) program.

GAP (http://www.gap-software.com/) is a classical Haldane/Buehlmann dissolved gas model, with the gradient factor hack to adjust conservatism and to generate deep stops.

[the_dumper]

I had heard of GAP and V-Planner before but have used neither, so any advice on either of these or any other software that other divers could recommend would be well apreciated.
Cheers.

[deepstops]

Charlie99 once bubbled...
V-Planner (http://www.hhssoftware.com/v-planner/index.html) is a dual phase (bubble model) program.

GAP (http://www.gap-software.com/) is a classical Haldane/Buehlmann dissolved gas model, with the gradient factor hack to adjust conservatism and to generate deep stops.

NOT quite. GAP now uses Dr Weinke's RGBM modeling but it's also far from free. It's certainly not a software hack......, it's the real deal. http://www.rgbmdiving.com I don't like the user interface very much either.
I find V-planner the best "bang for the buck" as well as getting me out of the water quickly and safely. I've done about 100 deco dives in the 110' to 180' range, always feel great afterwards. The user support group on Yahoo Groups is excellent as well.

[DS1]

I think most will recomend V-planner its an excellent program and you always get the latest upgrades available and its simple to use

[the_dumper]

Downloaded V-Planner last night, it looks good, thanks to all for the advise.

[medical1]

Found this to be somewhat helpful for Nitrox planning.
http://www.schmidt.as/NitroxPlan.htm
Very simple and you can enter different variables. Enjoy :)

[lof]

There is a review of 8 deco softwarte packages in the latest issue of the Advanced Diver Magazine and on their website at
www.advanceddivermagazine.com
Some are free some shareware and some for $$$
All do Nx and Tx deep stops etc.. and are pretty good.

LoF

[Charlie99]

deepstops once bubbled...
NOT quite. GAP now uses Dr Weinke's RGBM modeling but it's also far from free. It's certainly not a software hack......, it's the real deal. . GAP 1.2, the Buhlmann dissolved gas model with gradient factors is still available as a free download. (http://www.gap-software.com/homepage/downloads.html).

GAP-RGBM, as you noted is far from free, but you can test drive it for 4 days to see if you want to pay US$200 to keep it.

It is interesting to see how the results from the different programs vary.

[narcT]

The GAP software requires you to email them a "hardware fingerprint" of your system?

[Bootybreath]

Regarding free deco software....

How come nobody mentions zplanner except you???
Is it reliable?I think it is but am looking for some peace of mind on the issue.

I am doing 20min @ 65m air dives with this and it seems to be ok .

Vplanner seems fine but I dont have a serial for it. do you have serial for me pls?

[fgray1]

I use Vplanner 2.1 It's the older version but it's nagometer goes by in 5 seconds and you can plan dives using up to 100% 02. It works great and is easy to figure out.
I also have a program the has all the scuba claculations in it.
Eveerything from Sac rates to Nitrox mixes with to trimix.
If anyone wants a copy PM me.
Fred