V-Planner doesn't calc for mixes more than 50% O2

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Thanks for the reply. So what are the main differences between GUE Deco Planner and V-Planner? as the price difference is high!

No idea. My first tech instructor recommended V-Planner and I used it until I replaced it (at no charge, BTW) with Multi-Deco. I have never needed anything they do not do, and Ross adds new useful stuff from time to time, so I have never looked further. That does not mean there isn't something better out there, but both V-P and M-D are very usable and well laid-out. My only small beef with these products is that some things (notably one-click lost gas planning, partial pressure graphing, and ambient temperature compensation for gas blending) are not available in the Android versions.

That said, eventually you know what's going on with PPs anyway, and you will rarely need to look at them for any reason other than to further your education or double-check if you think there might be an ICD risk and want to add to your margins by more than you set the alert threshold to detect. And, you can de-select deco gasses and rerun for lost gas planning on your phone. Finally, if you mix your own gas, you will learn the "Kentucky windage" to add to compensate for adiabatic heating and ambient temperatures. So as slightly irritating as I find these lacks in the Android version, on the whole it's still (IMO) a sound planning platform even on Android, particularly for gas management, but also for dive duration and deco planning using Buhlmann.

Note: Ross and I have no connection other than that I'm one of his customers.

Here's a sample dive plan from M-D:

MultiDeco 4.14 by Ross Hemingway,
ZHL code by Erik C. Baker.

Decompression model: ZHL16-C + GF

DIVE PLAN
Surface interval = 5 day 0 hr 0 min.
Elevation = 0ft
Conservatism = GF 30/75

Dec to 240ft (1) Trimix 17/45 150ft/min descent.
Level 240ft 18:24 (20) Trimix 17/45 1.40 ppO2, 98ft ead, 117ft end
Asc to 140ft (21) Trimix 17/45 -60ft/min ascent.
Stop at 140ft 0:20 (22) Trimix 17/45 0.89 ppO2, 50ft ead, 62ft end
Stop at 130ft 1:00 (23) Trimix 17/45 0.84 ppO2, 45ft ead, 57ft end
Stop at 120ft 1:00 (24) Trimix 17/45 0.79 ppO2, 41ft ead, 51ft end
Stop at 110ft 1:00 (25) Trimix 17/45 0.74 ppO2, 36ft ead, 46ft end
Stop at 100ft 1:00 (26) Trimix 17/45 0.68 ppO2, 31ft ead, 40ft end
Stop at 90ft 3:00 (29) Trimix 17/45 0.63 ppO2, 26ft ead, 35ft end
Stop at 80ft 2:00 (31) Trimix 17/45 0.58 ppO2, 21ft ead, 29ft end
Stop at 70ft 3:00 (34) Triox 50/15 1.56 ppO2, 13ft ead, 55ft end
Stop at 60ft 2:00 (36) Triox 50/15 1.41 ppO2, 8ft ead, 46ft end
Stop at 50ft 4:00 (40) Triox 50/15 1.26 ppO2, 4ft ead, 38ft end
Stop at 40ft 6:00 (46) Triox 50/15 1.10 ppO2, 0ft ead, 29ft end
Stop at 30ft 9:00 (55) Triox 50/15 0.95 ppO2, 0ft ead, 21ft end
Stop at 20ft 10:00 (65) Oxygen 1.60 ppO2, 0ft ead
Stop at 10ft 19:00 (84) Oxygen 1.30 ppO2, 0ft ead
Surface (84) Oxygen -30ft/min ascent.

OTU's this dive: 115
CNS Total: 59.1%
Gas density: 6.1g/l

143.0 cu ft Trimix 17/45
33.1 cu ft Triox 50/15
24.4 cu ft Oxygen
200.6 cu ft TOTAL


DIVE PLAN COMPLETE

********* WARNING & DISCLAIMER *********
This MultiDeco generated dive schedule could indirectly kill you.
The author does not warrant that it accurately reflects the selected
decompression model algorithms, that it won't get you bent or dead, or that it
will produce safe, reliable results. This dive schedule is experimental
and you use it at your own risk. Diving in general is fraught with
risk, and decompression diving adds significantly more risk.
Deep diving utilizing multiple gasses, including Helium, is about
as risky as it gets.

This schedule is not intended for uneducated users. MultiDeco and the
decompression schedules it produces are tools for experienced mixed-gas
decompression divers ONLY. If you have not been properly trained in
mixed-gas decompression diving by an internationally recognized technical
certification agency and/or don't have a firm handle on decompression
planning and mixed-gas diving, then DO NOT USE THIS DIVE SCHEDULE.

Here's a lost gas plan for that dive:


Dive #1 with unusable deco gas scenarios


-- lost gas -->

OK 100 50/15 Both

240 (20) (20) (20) (20)
140 0 (22) 0 (22) 0 (22) 0 (22)
130 1 (23) 1 (23) 1 (23) 1 (23)
120 1 (24) 1 (24) 1 (24) 1 (24)
110 1 (25) 1 (25) 1 (25) 1 (25)
100 1 (26) 1 (26) 1 (26) 1 (26)
90 3 (29) 3 (29) 3 (29) 3 (29)
80 2 (31) 2 (31) 2 (31) 2 (31)
70 3 (34) 3 (34) 4 (35) 4 (35)
60 2 (36) 2 (36) 5 (40) 5 (40)
50 4 (40) 4 (40) 9 (49) 9 (49)
40 6 (46) 6 (46) 14 (63) 14 (63)
30 9 (55) 9 (55) 23 (86) 23 (86)
20 10 (65) 15 (70) 13 (99) 47 (133)
10 19 (84) 33 (103) 27 (126) 132 (265)


Gas consumptions

No failures - normal dive - OK
143.0 cu ft Trimix 17/45
33.1 cu ft Triox 50/15
24.4 cu ft Oxygen
200.6 cu ft TOTAL

Lost or missing deco gas: 100
143.0 cu ft Trimix 17/45
73.3 cu ft Triox 50/15
216.3 cu ft TOTAL

Lost or missing deco gas: 50/15
217.2 cu ft Trimix 17/45
33.6 cu ft Oxygen
250.8 cu ft TOTAL

Lost or missing deco gas: Both
365.6 cu ft Trimix 17/45
365.6 cu ft TOTAL


HTH,
 
https://www.shearwater.com/products/teric/

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