# Nitrox Helper vs DecoPlanner mobile

The clearest difference is in-app purchases: DecoPlanner mobile at none against Nitrox Helper's 4. DecoPlanner mobile also leads on update cadence (every 2 months vs every 9 months) and iOS requirement (13.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Nitrox Helper sells 4 in-app purchases, starting at $0.99 per month. DecoPlanner mobile asks for nothing beyond the download.

Nitrox Helper ships an update every 9 months, DecoPlanner mobile every 2 months. The most recent releases landed on September 15, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Nitrox Helper | DecoPlanner mobile |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 40.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 7 MB | 74 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Robert O'Connell](https://appshunter.io/developer/1451300849) | [Global Underwater Explorers Inc.](https://appshunter.io/developer/1459213336) |

## What reviewers say

### Nitrox Helper

[App page](https://appshunter.io/ios/app/nitrox-helper/id1451300850)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $0.99 | per month |
| Pro 6 Monthly | $5.99 | per 6 months |
| Pro Annual | $9.99 | per year |
| Pro Lifetime | $49.99 | one-time |


### DecoPlanner mobile

[App page](https://appshunter.io/ios/app/decoplanner-mobile/id1580563324)

Plan complex dive profiles using advanced decompression models. Track multiple gases, manage dive buddies, and visualize dive data with detailed graphs. Choose the version that suits your diving certification level.

**Highlights:** Open/Closed/Passive Semi-Closed Circuit planning, ZH-L16 / VPM-B decompression models, Gas tracking for multiple gases and dive buddies, Gas mixing (partial pressure & continuous blending), Dive profile and tissue compartment graphs, Diving level selection (Rec 1 to Unlimited CCR)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Nitrox Helper free?

Nitrox Helper is free to download, with in-app purchases available.

### Is DecoPlanner mobile free?

DecoPlanner mobile is free to download, with no in-app purchases.

### Do Nitrox Helper or DecoPlanner mobile have ads?

Neither Nitrox Helper nor DecoPlanner mobile shows ads.

### Which is updated more often, Nitrox Helper or DecoPlanner mobile?

Nitrox Helper ships an update every 9 months, and DecoPlanner mobile every 2 months. Most recently, Nitrox Helper was updated on September 15, 2026 and DecoPlanner mobile on September 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*