This app calculates SCUBA EANx, ppO2, and depth using simple sliders. It determines EAD, MOD, and Best Mix for enriched air nitro mixes. Optimized for specific iPhone models.




250+ iOS apps curated and reviewed
Out of 250+ ncalc easy apps on iOS, 19 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | — | No | No | Aug 2026 | ||
| 2 | Free | 1.0★ (2) | No | No | May 2026 | ||
| 3 | Free | 4.9★ (490) | No | Yes | Nov 2026 | ||
| 4 | Free | 5.0★ (1) | No | Yes | Aug 2026 | ||
| 5 | Free | — | No | No | May 2026 | ||
| 6 | Free | — | No | No | May 2026 | ||
| 7 | Free | — | No | No | May 2026 | ||
| 8 | Free | 4.7★ (26) | No | Yes | Nov 2026 |







This app calculates SCUBA EANx, ppO2, and depth using simple sliders. It determines EAD, MOD, and Best Mix for enriched air nitro mixes. Optimized for specific iPhone models.





This application serves as a straightforward calculator for nitrox and enriched air divers. It quickly computes essential dive data such as Maximum Operating Depth (MOD), Equivalent Air Depth (EAD), Best Mix, and Partial Pressure of Oxygen (PPO2). It supports both imperial and metric units and offers a companion watch app for on-the-go calculations.