# Dive Calculator vs Tech Dive

The clearest difference is update cadence: Tech Dive at every 4 weeks against Dive Calculator's every 12 months. Tech Dive also leads on rating (5.0 vs 4.6). Dive Calculator's advantage is monetization model (free vs free with in-app purchases) and ratings volume (24 vs 2). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Dive Calculator sells 2 one-off in-app purchases and Tech Dive sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Tech Dive holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Dive Calculator has 24 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Dive Calculator ships an update every 12 months, Tech Dive every 4 weeks. The most recent releases landed on October 8, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Dive Calculator | Tech Dive |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (24 ratings)](https://appshunter.io/ios/app/dive-calculator/id831751437/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/tech-dive/id6483004689/reviews)** |
| Number of ratings | **24** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 4 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 7 MB | 16 MB |
| Requires iOS | **6.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Zanthic Automation Inc.](https://appshunter.io/developer/574695320) | [Skytip LLC](https://appshunter.io/developer/1569880600) |

## What reviewers say

### Dive Calculator

[App page](https://appshunter.io/ios/app/dive-calculator/id831751437)

This app provides comprehensive scuba diving calculations, including basic, nitrox, and trimix gas mixes. It supports both metric and imperial units, and allows for gas volume and cost calculations for blending and top-ups. Results can be easily copied for documentation.

**Highlights:** Basic, Nitrox, and Trimix calculations, Gas volume and cost calculations, Top-up and bleed down mix calculations, Metric and imperial unit support, Oxygen narcotic/non-narcotic selection, Copy results to clipboard

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EANx Calculations | $0.99 | one-time |
| Trimix Calculations | $0.99 | one-time |


### 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 Dive Calculator free?

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

### Is Tech Dive free?

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

### Which has better reviews, Dive Calculator or Tech Dive?

Tech Dive is rated higher. Dive Calculator averages 4.6 out of 5 from 24 ratings, while Tech Dive averages 5.0 from 2 ratings.

### Do Dive Calculator or Tech Dive have ads?

Neither Dive Calculator nor Tech Dive shows ads.

### Which is updated more often, Dive Calculator or Tech Dive?

Dive Calculator ships an update every 12 months, and Tech Dive every 4 weeks. Most recently, Dive Calculator was updated on October 8, 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.*