Buoyancy Calc vs Maxims Espresso
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.
Maxims Espresso
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Your personal coffee machine butler, supporting your daily coffee life
Screenshots
Verdict
The clearest difference is iOS requirement: Maxims Espresso at 12.0 against Buoyancy Calc's 15.6. On price, update cadence, ads and in-app purchases 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.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 22, 2026 and October 17, 2026 respectively.
| Parameter | Buoyancy Calc | Maxims Espresso |
|---|---|---|
| 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 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 51 MB |
| Age rating | 4+ | 4+ |
| Developer | Eric Hamiter | 深圳市物语智联科技有限公司 |
In-app purchases
Buoyancy Calc
No in-app purchases
Maxims Espresso
No in-app purchases
