# NDL vs DecoPlanner mobile

The clearest difference is review sentiment: NDL at 67% against DecoPlanner mobile's 40%. DecoPlanner mobile's advantage is update cadence (every 2 months vs every 5 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

NDL ships an update every 5 months, DecoPlanner mobile every 2 months. The most recent releases landed on October 8, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | NDL | DecoPlanner mobile |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **66.7% of reviews** | 40.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 17 MB | 74 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [NDL, UCH](https://appshunter.io/developer/1278307433) | [Global Underwater Explorers Inc.](https://appshunter.io/developer/1459213336) |

## What reviewers say

### NDL

[App page](https://appshunter.io/ios/app/ndl/id1278307434)

Confirm your diver or freediver status online and save electronic certificates offline. This app offers a free log-book and No-decompression limit planner, along with the latest news from the National Dive League. Professionals can also manage certificates and access the NDL Professional Zone.

**Highlights:** Confirm diver status online, Save electronic certificates offline, Free log-book, No-decompression limit planner, Latest news from National Dive League, Manage certificates for professionals

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 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, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is NDL free?

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

### Is DecoPlanner mobile free?

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

### Do NDL or DecoPlanner mobile have ads?

Neither NDL nor DecoPlanner mobile shows ads.

### Which is updated more often, NDL or DecoPlanner mobile?

NDL ships an update every 5 months, and DecoPlanner mobile every 2 months. Most recently, NDL was updated on October 8, 2026 and DecoPlanner mobile on October 24, 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.*