Buoyancy Calc vs AMT Launch
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
Read full descriptionHide 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.
AMT Launch
Read full descriptionHide full description
AMT Launch allows for quick access to create and update incidents and is part of the Air Medical Technologies, LLC, family of software.
Screenshots
Verdict
The clearest difference is update cadence: AMT Launch at every 2 weeks against Buoyancy Calc's every 3 months. AMT Launch also leads on iOS requirement (11.0 vs 15.6). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Buoyancy Calc ships an update every 3 months, AMT Launch every 2 weeks. The most recent releases landed on June 8, 2026 and September 7, 2026 respectively.
| Parameter | Buoyancy Calc | AMT Launch |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (25 ratings) — better | — |
| Positive reviews | 40.0% of reviews | — |
| Number of ratings | 25 — better | — |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 9 MB |
| Age rating | 4+ | 12+ |
| Developer | Eric Hamiter | Air Medical Technologies |
In-app purchases
Buoyancy Calc
No in-app purchases
AMT Launch
No in-app purchases
