# Surface Air Consumption

> Calculates surface air consumption and air requirements for divers based on user input. (iPhone/iPad app by Leridian Dynamics, Inc..)

- Source: https://appshunter.io/ios/app/surface-air-consumption/id1532974489 (this page in markdown: same URL + `.md`)
- Developer: [Leridian Dynamics, Inc.](https://appshunter.io/developer/1356342542)
- Category: Utilities
- Price: Free
- Rating: 5.00/5 from 2 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.6 · 1 MB
- Languages: English
- Released: 2020-09-23
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/surface-air-consumption/id1532974489/reviews.md

## What is Surface Air Consumption?

This software calculates Surface Air Consumption (SAC Rate) and air requirements at depth based on user input data ONLY. This software DOES NOT calculate nitrogen absorption and/or decompression limits.  Please see US Navy decompression tables for that information. This software only calculates how much air is required based on user entered data and dive profile. Know your limits and dive within them. Always error on the side of safety. Leridian Dynamics, Inc. assumes no liability for the use and/or misuse of this software.

## Key features

- Calculates SAC Rate
- Estimates air requirements at depth
- User input based calculations
- Dive profile analysis
- Focuses solely on air consumption

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/surface-air-consumption/id1532974489/reviews.md

### 5/5 — Surface air consumption

*2024-08-10*

This is a simple and easy to use app for calculating your Surface Air Consumption and other variables. I wish I had known about this app while I was going through my Instructor Development Course. This app is also good for your Self Reliant Scuba course!

## Frequently asked questions about Surface Air Consumption

### Does Surface Air Consumption calculate decompression limits?

No, Surface Air Consumption is designed solely to calculate Surface Air Consumption (SAC) rates and air requirements at depth based on user input. It explicitly states that it does not calculate nitrogen absorption or decompression limits. For that information, users should consult official US Navy decompression tables.

### What kind of data does Surface Air Consumption use for calculations?

Surface Air Consumption uses only user-entered data, such as dive profile information, to perform its calculations. It does not pull data from external sources or sensors.

### Is Surface Air Consumption suitable for beginners?

While the app calculates air consumption, it emphasizes knowing one's limits and diving safely. Beginners should use this tool in conjunction with proper training and guidance, and always error on the side of safety.

### What devices is Surface Air Consumption available on?

Surface Air Consumption is available on iPhone, iPad, and iPod devices. It is designed for iOS users.

### How often is Surface Air Consumption updated?

The app was last updated on September 29, 2020, with version 1.0.1. This indicates a relatively infrequent update schedule since its release on September 23, 2020.

### What is the user sentiment for Surface Air Consumption?

Based on the available data, Surface Air Consumption has a perfect 5.0-star rating from 2 reviews, suggesting very positive user sentiment among its current users.

### Does Surface Air Consumption have ads?

No, Surface Air Consumption does not contain advertisements. It is a completely free application without any ad interruptions.

### What is the age rating for Surface Air Consumption?

Surface Air Consumption has an age rating of 4+, making it suitable for a wide range of users, including younger individuals interested in diving calculations.

## Version history (last 2 releases)

### 1.0.1 — 2020-09-29

Corrected field labels and formulas displayed when calculating Metric Surface Air Consumption.

### 1.0 — 2020-09-23

No release notes.

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## More apps by Leridian Dynamics, Inc.

- [Smart Recirculation Control](https://appshunter.io/ios/app/smart-recirculation-control/id1356342543)
- [Smart Recirculation Control 32](https://appshunter.io/ios/app/smart-recirculation-control-32/id1620060104)

All apps by Leridian Dynamics, Inc.: https://appshunter.io/developer/1356342542

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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 2026-06-01.*