Comparison

V vs Buoyancy Calc

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

V

This app is a dive decompression calculator for technical scuba divers, implementing the VPM decompression model. It supports various gas mixes, planning methods for open circuit and rebreathers, and includes detailed dive planning tools and a gas blending utility.

Highlights
  • VPM-B and VPM-B/E decompression models
  • Support for nitrox and trimix gases
  • OC and CCR planning
  • Bailout planning for CCR
  • ppO2, END, and gas consumption details
  • Dive planning tools (best mix, MOD, END, EAD)
  • Gas blending utility
Read full description

A dive decompression calculator for technical scuba divers. V-Planner presents the VPM decompression model and includes both VPM-B and VPM-B/E model versions. The diver can specify any combination of nitrox or trimix, and as many deco gases as required. Planning methods include both OC and Closed Circuit Rebreather. It includes planning for bailouts with SCR and OC legs in a CCR plan. Includes details of ppO2, END, and gas consumptions. This program includes many of the features from the desktop version such as conservatism adjustments, extended stops, adjustable last stops, the planning monitor system and extensive control over many other planning features. Also included is a set of dive planning tools for calculating best mix, maximum operating depth (MOD), END, EAD and other planning considerations. The Mixer utility for blending nitrox and trimix, is included too.

About

Buoyancy Calc

Calculate the optimal weight for scuba diving based on environmental factors. Input your weight, water type, tank, and exposure suit to get a suggested weight for neutral buoyancy.

Highlights
  • Calculate suggested diving weight
  • Adjust for water type
  • Adjust for tank type
  • Adjust for exposure suit
  • Supports pounds and kilograms
Features
Read full description

Quickly find out the suggested weight you should add when scuba diving in different environments. Based on PADI's Peak Performance Buoyancy basic weighting guideline*. Enter your weight in pounds or kilograms, and additionally set the type of water, tank, and exposure suit to dial in a suggested amount of weight to help keep you neutrally buoyant. *Note that this app and the developer are not officially a representative of PADI. This app will give the user a good estimate of the weight needed for the environment selected, but there are always adjustments needed to achieve peak performance, based on gender, physique, exposure suit age, accessories, etc.

Screenshots

V4 screens
Buoyancy Calc1 screens

Verdict

The call

The clearest difference is price: Buoyancy Calc at Free against V's $48.99. Buoyancy Calc also leads on ratings volume (25 vs 7) and iOS requirement (15.6 vs 17.6). V's advantage is rating (4.1 vs 3.1) and review sentiment (68% vs 40%). On update cadence, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Buoyancy Calc is free to download; V costs $48.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

V holds the better App Store score, 4.1 against 3.1. Both are backed by a comparable volume of ratings — 7 and 25 respectively. Written reviews point the same way: 68% of V's written reviews are positive against 40% of Buoyancy Calc's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 21, 2026 and June 8, 2026 respectively.

Scorecard6 real differences · 4 level
V versus Buoyancy Calc: the parameters behind the verdict, then further details
ParameterVBuoyancy Calc
Price$48.99Free — better
Rating4.1 (7 ratings) — better3.1 (25 ratings)
Positive reviews67.9% of reviews — better40.0% of reviews
Number of ratings725 — better
Update frequencyEvery 3 monthsEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.615.6 — better
Further details — not scored
Size3 MB1 MB
Age rating4+4+
DeveloperHHS Software Corp.Eric Hamiter

Customer experience

V

All ratings7 ratings
Positive71.4%
Neutral14.3%
Negative14.3%
Written reviews56 reviews
Positive67.9%
Neutral19.6%
Negative12.5%

Buoyancy Calc

All ratings25 ratings
Positive44.0%
Neutral12.0%
Negative44.0%
Written reviews25 reviews
Positive40.0%
Neutral12.0%
Negative48.0%

In-app purchases

None

V

No in-app purchases

None

Buoyancy Calc

No in-app purchases

Questions

Is V free?
V costs $48.99, with no in-app purchases.
Is Buoyancy Calc free?
Buoyancy Calc is free to download, with no in-app purchases.
Which has better reviews, V or Buoyancy Calc?
V is rated higher. V averages 4.1 out of 5 from 7 ratings, while Buoyancy Calc averages 3.1 from 25 ratings.
Do V or Buoyancy Calc have ads?
Neither V nor Buoyancy Calc shows ads.
Which is updated more often, V or Buoyancy Calc?
V ships an update every 3 months, and Buoyancy Calc every 3 months. Most recently, V was updated on September 21, 2026 and Buoyancy Calc on June 8, 2026.

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