# Flaska — A scuba tank calculation tool

> A scuba tank calculation tool (iPhone/iPad app by Kastelo AB.)

- Source: https://appshunter.io/ios/app/flaska/id1546916397 (this page in markdown: same URL + `.md`)
- Developer: [Kastelo AB](https://appshunter.io/developer/324516389)
- Category: Sports, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 13.0 · 17 MB
- Languages: English
- Released: 2021-01-06
- Data updated: 2026-05-17
- User reviews in markdown: https://appshunter.io/ios/app/flaska/id1546916397/reviews.md

## What is Flaska?

A scuba tank calculator utility app -- calculates rock bottom air requirements, gas time, and transfills for various tank sizes.


## Version history (last 5 releases)

### 1.5.3 — 2024-05-12

Improved calculations for doubles

### 1.5.2 — 2023-10-10

Minor internal updates

### 1.5.1 — 2023-07-24

Improved display of min gas calculation

### 1.5.0 — 2023-07-03

Calculate turn pressures for halves and thirds

### 1.4.0 — 2023-06-18

Support GUE min gas calculation

## Apps similar to Flaska

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Tech Dive](https://appshunter.io/ios/app/tech-dive/id6483004689) | 5.0 (2) | Free | Sports |
| [Scuba Gas Calculator](https://appshunter.io/ios/app/scuba-gas-calculator/id6741871339) | — | $3.99 | Sports |
| [SailSizeCalc](https://appshunter.io/ios/app/sailsizecalc/id6746686907) | — | Free | Sports |
| [Tournament Weight Calculator](https://appshunter.io/ios/app/tournament-weight-calculator/id6503160024) | — | $2.99 | Sports |
| [Gas*Blender](https://appshunter.io/ios/app/gasblender/id496853771) | — | $2.99 | Sports |
| [Athletics Calc](https://appshunter.io/ios/app/athletics-calc/id6742638673) | — | Free | Sports |

## More apps by Kastelo AB

- [Bubbletrail Dive Log](https://appshunter.io/ios/app/bubbletrail-dive-log/id6756735362)

All apps by Kastelo AB: https://appshunter.io/developer/324516389

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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 2026-05-17.*