# Alert Diver vs DecoPlanner mobile

The clearest difference is monetization model: DecoPlanner mobile at free against Alert Diver's free with in-app purchases. DecoPlanner mobile also leads on update cadence (every 2 months vs every 6 months) and review sentiment (40% vs 25%). Alert Diver's advantage is iOS requirement (11.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Alert Diver ships an update every 6 months, DecoPlanner mobile every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Alert Diver | DecoPlanner mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/alert-diver/id480608662/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 25.0% of reviews | **40.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 92 MB | 74 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Divers Alert Network](https://appshunter.io/developer/1482122935) | [Global Underwater Explorers Inc.](https://appshunter.io/developer/1459213336) |

## What reviewers say

### Alert Diver

[App page](https://appshunter.io/ios/app/alert-diver/id480608662)

Explore dive industry insights, research, and safety information. Discover underwater photography, travel destinations, and marine environmental topics. This app provides valuable content for divers and enthusiasts.

**Highlights:** Dive industry research, Medical information, Dive safety guidelines, Underwater photography, Dive travel guides, Marine environmental topics

**Features:** macOS Compatibility

**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 Alert Diver free?

Alert Diver 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 Alert Diver or DecoPlanner mobile have ads?

Neither Alert Diver nor DecoPlanner mobile shows ads.

### Which is updated more often, Alert Diver or DecoPlanner mobile?

Alert Diver ships an update every 6 months, and DecoPlanner mobile every 2 months. Most recently, Alert Diver was updated on October 24, 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.*