Buoyancy Calc vs Kraken NextGen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Calculate suggested diving weight
- Adjust for water type
- Adjust for tank type
- Adjust for exposure suit
- Supports pounds and kilograms
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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.
Kraken NextGen
Enhance your underwater photography and track dives with AI-powered image improvements and detailed dive logging. This app works with smart housings to provide real-time data and safety timers for a superior diving experience.
- AI Image Enhancement
- AI Color Correction
- AI Image Denoise
- Comprehensive Dive Logs
- Real-Time Dive Tracking
- Cool-Down Timers
- Decompression Calculations
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Kraken NextGen is your all-in-one app for underwater photography and dive tracking, designed to pair seamlessly with Kraken Sports Smart Housing. Rebuilt from the ground up, Kraken NextGen takes your underwater experience to the next level with cutting-edge features, including: • AI Image Enhancement: Let our AI improve photo quality with intelligent adjustments. • AI Color Correction: Achieve accurate, vibrant colors in underwater shots. • AI Image Denoise: Reduce noise and maintain clarity for stunning visuals. • Comprehensive Dive Logs: Log and review all dive data, including depth and temperature. • Real-Time Dive Tracking: Keep track of critical stats during your dive. • Cool-Down Timers: Utilize fly and dive cool-down timers for safety. • Decompression Calculations: Stay informed with on-screen decompression data for each dive. • Unlock the full potential of your Kraken Smart Housing and redefine your underwater adventure with KrakenNextGen. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://krakensports.ca/privacy/
Screenshots
Verdict
The clearest difference is rating: Buoyancy Calc at 3.1 against Kraken NextGen's 2.5. Buoyancy Calc also leads on in-app purchases (none vs 4) and ratings volume (25 vs 6). Kraken NextGen's advantage is review sentiment (67% vs 40%). On price, update cadence and ads 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
Both are free to download. Kraken NextGen sells 4 in-app purchases, starting at $4.99 per 7 days. Buoyancy Calc asks for nothing beyond the download.
Buoyancy Calc holds the better App Store score, 3.1 against 2.5. Both are backed by a comparable volume of ratings — 25 and 6 respectively. Written reviews complicate that: 40% of Buoyancy Calc's written reviews are positive against 67% of Kraken NextGen's, so the app with the better star average is not the one people write more warmly about.
Buoyancy Calc ships an update every 3 months, Kraken NextGen every 2 months. Both last shipped on October 22, 2026.
| Parameter | Buoyancy Calc | Kraken NextGen |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (25 ratings) — better | 2.5 (6 ratings) |
| Positive reviews | 40.0% of reviews | 66.7% of reviews — better |
| Number of ratings | 25 — better | 6 |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 17.2 |
| Further details — not scored | ||
| Size | 1 MB | 322 MB |
| Age rating | 4+ | 4+ |
| Developer | Eric Hamiter | DATS Sports |
Customer experience
Buoyancy Calc
Kraken NextGen
In-app purchases
Buoyancy Calc
No in-app purchases
Kraken NextGen
- Kraken Pro Weekly7 Days trial$4.997 Days
- Kraken Pro Monthly7 Days trial$9.991 Month
- Kraken Pro Half-Yearly7 Days trial$49.996 Months
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- Kraken Pro Yearly7 Days trial$79.991 Year







