# EANx Assistant — Enriched Air Calculation

> Enriched Air Calculation (iPhone/iPad app by 嘉亮 曾.)

- Source: https://appshunter.io/ios/app/eanx-assistant/id6742987484 (this page in markdown: same URL + `.md`)
- Developer: [嘉亮 曾](https://appshunter.io/developer/1800529919)
- Category: Utilities, Sports
- Price: Free with in-app purchases (on sale, was $0.99)
- Age rating: 4+
- Requires: iOS 15.6 · 1 MB
- Languages: American English
- Released: 2025-03-08
- Data updated: 2026-03-19
- User reviews in markdown: https://appshunter.io/ios/app/eanx-assistant/id6742987484/reviews.md

## What is EANx Assistant?

EANx Assistant is a nitrox diving calculation tool designed for recreational divers and diving instructors. Whether you are a professional diving instructor or a nitrox diving enthusiast, this application can help you perform various nitrox diving-related calculations quickly and accurately.

【Main Features】

• Maximum diving depth calculation: Automatically calculates safe diving depth limits based on oxygen content percentage
• Optimal nitrox ratio calculation: Provides the best gas mixture ratio for specified depths
• Equivalent Air Depth calculation: Converts nitrox diving to equivalent air diving depth
• Oxygen partial pressure calculation: Real-time monitoring of oxygen partial pressure values at different depths and gas mixtures
• Adjustable maximum PPO₂ value: Supports customized safety thresholds, default is 1.4

【Usage Scenarios】

• Pre-dive planning: Quickly determine the optimal gas mixture for your diving plan
• Teaching aid: Diving instructors can use it for training courses and on-site teaching

【Thoughtful Design】

• Clean and intuitive blue interface, reducing recognition pressure
• Bilingual support in Chinese and English, meeting the needs of international divers
• Intuitive slider controls for quick parameter adjustments

EANx Assistant makes complex nitrox diving calculations simple. No internet connection required, perform calculations anytime, anywhere - an indispensable digital tool in your diving equipment.

Note: This application is only intended as an auxiliary calculation tool and should not replace professional dive training and certification. Always follow safe diving rules and receive appropriate training before using nitrox gas mixtures.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Small Coffee | $0.99 | one-time |
| Medium Coffee | $1.99 | one-time |
| Large Coffee | $2.99 | one-time |



## Version history (last 4 releases)

### 1.11 — 2025-04-01

Bug fixed.

### 1.10 — 2025-03-31

Added calculation units, environment settings, now supports "feet" and "freshwater"!

### 1.02 — 2025-03-09

图标及名称更新，更符合原生UI应用设计感

### 1.0 — 2025-03-07

No release notes.

---

*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 2026-03-19.*