# Dalton vs Deep Frontier Dive Tools

The clearest difference is update cadence: Dalton at fortnightly against Deep Frontier Dive Tools's every 2 months. Deep Frontier Dive Tools's advantage is iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Dalton sells 1 one-off in-app purchase and Deep Frontier Dive Tools sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Dalton ships an update fortnightly, Deep Frontier Dive Tools every 2 months. The most recent releases landed on October 31, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Dalton | Deep Frontier Dive Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/dalton-dive-gas-calculator/id6759679904/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 12 MB | 3 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tools for Divers, LLC](https://appshunter.io/developer/1880150704) | [Christoph Heinrich Fischer](https://appshunter.io/developer/6787112418) |

## What reviewers say

### Dalton

[App page](https://appshunter.io/ios/app/dalton-dive-gas-calculator/id6759679904)

This app calculates critical dive gas parameters like MOD, EAD, and END, showing all derivations. It offers advanced planning tools for dive profiles and bottom time, with sharing capabilities and home/lock screen widgets for quick access. All core gas calculations are free, with advanced features available via a one-time purchase.

**Highlights:** MOD calculation, Equivalent Air Depth (EAD), Equivalent Narcotic Depth (END), Best Mix calculation, Gas Properties at depth, Return Number calculation (Pro), Dive Profile Advisor (Pro), Bottom Time Calculator (Pro)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dalton Pro | $14.99 | one-time |


### Deep Frontier Dive Tools

[App page](https://appshunter.io/ios/app/deep-frontier-dive-tools/id6787112416)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Deep Frontier Dive Tools Pro | $12.99 | one-time |


## Frequently asked questions

### Is Dalton free?

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

### Is Deep Frontier Dive Tools free?

Deep Frontier Dive Tools is free to download, with in-app purchases available.

### Do Dalton or Deep Frontier Dive Tools have ads?

Neither Dalton nor Deep Frontier Dive Tools shows ads.

### Which is updated more often, Dalton or Deep Frontier Dive Tools?

Dalton ships an update fortnightly, and Deep Frontier Dive Tools every 2 months. Most recently, Dalton was updated on October 31, 2026 and Deep Frontier Dive Tools on October 28, 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.*