# Ballast Finder — Buoyancy estimates for divers

> Buoyancy estimates for divers (iPhone/iPad app by Olav Ekornes Haskjold.)

- Source: https://appshunter.io/ios/app/ballast-finder/id6802803534 (this page in markdown: same URL + `.md`)
- Developer: [Olav Ekornes Haskjold](https://appshunter.io/developer/6802803536)
- Category: Utilities, Sports
- Price: Free
- Age rating: 4+
- Requires: iOS 16.4 · 33 MB
- Languages: American English
- Released: 2026-09-10
- Data updated: 2026-10-10

## What is Ballast Finder?

Ballast Finder estimates how much ballast to add or remove when a rigid, incompressible piece of dive gear moves between different water conditions.

Enter the salinity, temperature and depth where the complete configured object was neutrally buoyant. Add its dry weight, then define the conditions for the new dive. Ballast Finder compares the calculated water densities and reports an estimated ballast change in grams to restore neutral buoyancy.

Designed for objects whose external volume does not change appreciably with depth, including:

- Underwater scooters
- Sealed rigid camera housings
- Rigid cargo containers

Features:

- Compare previous neutral and target water conditions
- Enter conditions manually or start from illustrative water presets
- Calculate in-situ seawater density from salinity, temperature and pressure
- Explore density-versus-temperature and density-versus-salinity charts
- Use light or dark appearance, Dynamic Type and VoiceOver
- Work entirely offline with no accounts, analytics or advertising

The density calculator uses the UNESCO 1983 EOS-80 equation of state and includes the pressure-dependent secant bulk modulus. Depth is converted using the approximation 1 metre ≈ 1 dbar. Results display to three decimal places. EOS-80 has been superseded by TEOS-10 for modern oceanographic work.

Important limitations

Ballast Finder is intended only for complete rigid, incompressible objects. It is not suitable for neoprene, BCDs, suits, lift bags, flooded equipment or flexible trapped-gas spaces.

Results are estimates. Verify the object in controlled water and follow normal diving procedures, training and manufacturer guidance. Do not rely solely on this app for safety-critical, navigation or dive-planning decisions.

Ballast Finder does not collect, transmit or store personal information.

## Is Ballast Finder safe?

Not enough ratings yet to assess Ballast Finder.

## Is Ballast Finder legit?

Ballast Finder has limited verification signals. The AppsHunter Legitimacy Score for Ballast Finder is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.1.0 — 2026-09-22

Added Saved Gear profiles for reusable neutral conditions, dry weight, setup notes and up to three locally stored photos. This makes the user able to organize and remember gear configurations. Load a saved profile to plan a new dive. We added a pressure chart to Learn and reorganized the app into Plan, Gear and Learn sections.

### 1.0 — 2026-09-10

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-10.*