Comparison

Deep Tools 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

Deep Tools

This comprehensive dive toolkit helps recreational, advanced, and technical divers plan dives, log underwater adventures, and blend gases. It offers advanced planning tools, dive computer import, and essential calculations for safe and efficient diving.

Highlights
  • Advanced Deco Planner
  • Dive Log with Shearwater import
  • Gas Blender for Trimix/Nitrox
  • Maximum Operating Depth (MOD) calculator
  • No Decompression Limit (NDL) tracking
  • Metric and Imperial units
Features
Read full description

The Complete Dive Toolkit Deep Tools is a must-have application for recreational, advanced, and technical divers. Whether you are learning to dive, planning complex decompression dives, or logging your underwater adventures, Deep Tools provides reliable tools you can trust. Import dives directly from your Shearwater dive computer, plan dives using the advanced Deco Planner, or use the app as a practical learning aid during your dive training. Tools included:
 - Maximum Operating Depth (MOD) - Oxygen Partial Pressure (ppO₂) - Equivalent Air Depth (EAD) - Equivalent Narcotic Depth (END) - Equivalent Air Density Depth (EADD) - No Decompression Limit (NDL) - Best Trimix for depth - Best Nitrox for depth - Gas consumption and density - Calculator for lifting bag Dive Log: * - Import dives from Shearwater dive computers (Petrel, Perdix, NERD, Teric, etc.) - Log dive sites with name, coordinates, and custom tags - Automatically merge dives with short surface intervals - Share logged dives with your buddies - Create local backups or migrate data to another device Advanced Dive Planner: * Plan complex dives with confidence, whether on Open Circuit (OC) or Rebreather (CCR): - Repetitive dive planning - Bühlmann ZH-L16B and ZH-L16C with Gradient Factors - Gas consumption, CNS, and OTU calculations - Visual dive profile, text plan, pressure graph, and slate view - Lost gas planning - CCR Bailout planning - Multiple point dive plan with custom bailout points - Share dive plans with friends Gas Blender: * Prepare accurate breathing gas mixtures: - Trimix and Nitrox blending - Mix to desired gas - Mix with Top-off gas - Continuous flow blending Additional Features - Metric and Imperial units - Adjustable altitude and water type (EN13319, salt, fresh) - Set your altitude - Custom tank / cylinder database * Advanced features are available with a subscription or during the free trial. Special thanks to V. Paul Gordon, Serge Nelissen and Michael Heus for extensive testing and valuable contributions! Terms of Service: http://www.deepblue.si/privacy/terms-of-service.php

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

Deep Tools4 screens
Buoyancy Calc1 screens

Verdict

The call

The clearest difference is rating: Deep Tools at 4.6 against Buoyancy Calc's 3.1. Deep Tools also leads on update cadence (every 6 weeks vs every 3 months) and review sentiment (50% vs 40%). Buoyancy Calc's advantage is in-app purchases (none vs 3). On price, ads, device support and iOS requirement 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

Both are free to download. Deep Tools sells 3 in-app purchases, starting at $2.99 per month. Buoyancy Calc asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Deep Tools holds the better App Store score, 4.6 against 3.1. Both are backed by a comparable volume of ratings — 93 and 25 respectively. Written reviews point the same way: 50% of Deep Tools's written reviews are positive against 40% of Buoyancy Calc's.

UpkeepUpdate frequency

Deep Tools ships an update every 6 weeks, Buoyancy Calc every 3 months. The most recent releases landed on September 15, 2026 and June 8, 2026 respectively.

Scorecard6 real differences · 4 level
Deep Tools versus Buoyancy Calc: the parameters behind the verdict, then further details
ParameterDeep ToolsBuoyancy Calc
PriceFreeFree
Rating4.6 (93 ratings) — better3.1 (25 ratings)
Positive reviews50.0% of reviews — better40.0% of reviews
Number of ratings93 — better25
Update frequencyEvery 6 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.6
Further details — not scored
Size12 MB1 MB
Age rating4+4+
DeveloperDeep Blue d.o.o.Eric Hamiter

Customer experience

Deep Tools

All ratings93 ratings
Positive91.4%
Neutral2.2%
Negative6.5%
Written reviews6 reviews
Positive50.0%
Neutral16.7%
Negative33.3%

Buoyancy Calc

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

In-app purchases

3 purchases

Deep Tools

Subscriptions2
  • Subscription Monthly$2.991 Month
  • Subscription Yearly3 Days trial$17.991 Year
One-time1
  • Lifetime Subscription$39.99
None

Buoyancy Calc

No in-app purchases

Questions

Is Deep Tools free?
Deep Tools is free to download, with in-app purchases available.
Is Buoyancy Calc free?
Buoyancy Calc is free to download, with no in-app purchases.
Which has better reviews, Deep Tools or Buoyancy Calc?
Deep Tools is rated higher. Deep Tools averages 4.6 out of 5 from 93 ratings, while Buoyancy Calc averages 3.1 from 25 ratings.
Do Deep Tools or Buoyancy Calc have ads?
Neither Deep Tools nor Buoyancy Calc shows ads.
Which is updated more often, Deep Tools or Buoyancy Calc?
Deep Tools ships an update every 6 weeks, and Buoyancy Calc every 3 months. Most recently, Deep Tools was updated on September 15, 2026 and Buoyancy Calc on June 8, 2026.

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