# Buoyancy Calc vs EANx Assistant

The clearest difference is in-app purchases: Buoyancy Calc at none against EANx Assistant's 3. EANx Assistant's advantage is update cadence (every 2 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. EANx Assistant sells 3 one-off in-app purchases. Buoyancy Calc asks for nothing beyond the download.

Buoyancy Calc ships an update every 3 months, EANx Assistant every 2 days. The most recent releases landed on October 22, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Buoyancy Calc | EANx Assistant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (25 ratings)](https://appshunter.io/ios/app/buoyancy-calc/id1482332472/reviews)** | — |
| Number of ratings | **25** | — |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | Free | — |
| Size | 1 MB | 1 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Eric Hamiter](https://appshunter.io/developer/1482332471) | [嘉亮 曾](https://appshunter.io/developer/1800529919) |

## What reviewers say

### Buoyancy Calc

[App page](https://appshunter.io/ios/app/buoyancy-calc/id1482332472)

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:** macOS Compatibility

**In-app purchases:** none


### EANx Assistant

[App page](https://appshunter.io/ios/app/eanx-assistant/id6742987484)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Coffee | $0.99 | one-time |
| Medium Coffee | $1.99 | one-time |
| Large Coffee | $2.99 | one-time |


## Frequently asked questions

### Is Buoyancy Calc free?

Buoyancy Calc is free to download, with no in-app purchases.

### Is EANx Assistant free?

EANx Assistant is free to download, with in-app purchases available.

### Do Buoyancy Calc or EANx Assistant have ads?

Neither Buoyancy Calc nor EANx Assistant shows ads.

### Which is updated more often, Buoyancy Calc or EANx Assistant?

Buoyancy Calc ships an update every 3 months, and EANx Assistant every 2 days. Most recently, Buoyancy Calc was updated on October 22, 2026 and EANx Assistant on October 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*