# Freedive vs Buoyancy Calc

The clearest difference is review sentiment: Freedive at 94% against Buoyancy Calc's 40%. Freedive also leads on rating (4.6 vs 3.1) and update cadence (every 6 weeks vs every 3 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Freedive holds the better App Store score, 4.6 against 3.1. Both are backed by a comparable volume of ratings — 14 and 25 respectively. Written reviews point the same way: 94% of Freedive's written reviews are positive against 40% of Buoyancy Calc's.

Freedive ships an update every 6 weeks, Buoyancy Calc every 3 months. The most recent releases landed on August 19, 2026 and June 8, 2026 respectively.

## The numbers

| Metric | Freedive | Buoyancy Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (14 ratings)](https://appshunter.io/ios/app/freedive/id1052818247/reviews)** | [3.1 (25 ratings)](https://appshunter.io/ios/app/buoyancy-calc/id1482332472/reviews) |
| Number of ratings | 14 | **25** |
| Positive reviews | **94.1% of reviews** | 40.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Free | Free |
| Size | 24 MB | 1 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Luca Naterop](https://appshunter.io/developer/1051838672) | [Eric Hamiter](https://appshunter.io/developer/1482332471) |

## What reviewers say

### Freedive

[App page](https://appshunter.io/ios/app/freedive/id1052818247)

This app helps freedivers improve their breath-holding abilities with customizable training tables and performance tracking. It offers automated CO2 tolerance and O2 deprivation tables, along with the ability to create personalized sessions. Track your progress and receive notifications during your training.

**Highlights:** Auto-generated CO2 tolerance tables, Auto-generated O2 deprivation tables, Customizable table creation, Breath hold duration testing, Attempt history tracking, Advanced notifications with vibration/speech

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Freedive free?

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

### Is Buoyancy Calc free?

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

### Which has better reviews, Freedive or Buoyancy Calc?

Freedive is rated higher. Freedive averages 4.6 out of 5 from 14 ratings, while Buoyancy Calc averages 3.1 from 25 ratings.

### Do Freedive or Buoyancy Calc have ads?

Neither Freedive nor Buoyancy Calc shows ads.

### Which is updated more often, Freedive or Buoyancy Calc?

Freedive ships an update every 6 weeks, and Buoyancy Calc every 3 months. Most recently, Freedive was updated on August 19, 2026 and Buoyancy Calc on June 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.*