# Buoyancy Calc vs Diver Tools

The clearest difference is price: Buoyancy Calc at Free against Diver Tools's $9.99. Buoyancy Calc also leads on ads (none vs shown) and device support (3 vs 1). Diver Tools's advantage is update cadence (every 5 weeks vs every 3 months). On in-app purchases and iOS requirement there is nothing between them.

Buoyancy Calc is free to download; Diver Tools costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Buoyancy Calc ships an update every 3 months, Diver Tools every 5 weeks. The most recent releases landed on June 8, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Buoyancy Calc | Diver Tools |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| 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 | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 1 MB | 3 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Eric Hamiter](https://appshunter.io/developer/1482332471) | [Michael Gibby](https://appshunter.io/developer/1613178461) |

## 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


### Diver Tools

[App page](https://appshunter.io/ios/app/diver-tools/id1613178459)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Buoyancy Calc free?

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

### Is Diver Tools free?

Diver Tools costs $9.99, with no in-app purchases.

### Do Buoyancy Calc or Diver Tools have ads?

Diver Tools shows ads; Buoyancy Calc does not.

### Which is updated more often, Buoyancy Calc or Diver Tools?

Buoyancy Calc ships an update every 3 months, and Diver Tools every 5 weeks. Most recently, Buoyancy Calc was updated on June 8, 2026 and Diver Tools on September 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.*