# DecoPlanner mobile vs Tech Dive

The clearest difference is review sentiment: Tech Dive at 100% against DecoPlanner mobile's 40%. DecoPlanner mobile's advantage is in-app purchases (none vs 2) and iOS requirement (13.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Tech Dive sells 2 in-app purchases, starting at $0.99 per month. DecoPlanner mobile asks for nothing beyond the download.

DecoPlanner mobile ships an update every 2 months, Tech Dive every 4 weeks. The most recent releases landed on September 25, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | DecoPlanner mobile | Tech Dive |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/tech-dive/id6483004689/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 40.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 74 MB | 16 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Global Underwater Explorers Inc.](https://appshunter.io/developer/1459213336) | [Skytip LLC](https://appshunter.io/developer/1569880600) |

## What reviewers say

### 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


### Tech Dive

[App page](https://appshunter.io/ios/app/tech-dive/id6483004689)

This app helps plan scuba dives with various calculators for gas, depth, and air consumption. It supports metric and imperial units and offers advanced features through an in-app purchase.

**Highlights:** Dive planning calculators, Gas and air consumption calculations, Metric and imperial unit support, Depth and EAD calculations, Enriched Air-Nitrox mix calculation, Unit conversion tools

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Monthly | $0.99 | per month |
| Plus Annual | $7.99 | per year |


## Frequently asked questions

### Is DecoPlanner mobile free?

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

### Is Tech Dive free?

Tech Dive is free to download, with in-app purchases available.

### Do DecoPlanner mobile or Tech Dive have ads?

Neither DecoPlanner mobile nor Tech Dive shows ads.

### Which is updated more often, DecoPlanner mobile or Tech Dive?

DecoPlanner mobile ships an update every 2 months, and Tech Dive every 4 weeks. Most recently, DecoPlanner mobile was updated on September 25, 2026 and Tech Dive on September 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.*