# Nitrox Blender & Calculator vs Deep Tools

Nitrox Blender & Calculator and Deep Tools both sit at 4.5 stars, but that hides the real split: 100% of Nitrox Blender & Calculator's written reviews are positive against 50% of Deep Tools's. Nitrox Blender & Calculator also leads on in-app purchases (none vs 3) and iOS requirement (10.0 vs 15.6). Deep Tools's advantage is price (Free vs $0.99) and update cadence (every 6 weeks vs every 9 months). On rating, ads and device support there is nothing between them.

Deep Tools is free to download; Nitrox Blender & Calculator costs $0.99 up front. Deep Tools sells 3 in-app purchases, starting at $2.99 per month. Nitrox Blender & Calculator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.5 for Nitrox Blender & Calculator against 4.6 for Deep Tools. That said, the two scores are not equally well evidenced: Deep Tools has 93 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 100% of Nitrox Blender & Calculator's written reviews are positive against 50% of Deep Tools's.

Nitrox Blender & Calculator ships an update every 9 months, Deep Tools every 6 weeks. The most recent releases landed on September 24, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Nitrox Blender & Calculator | Deep Tools |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/nitrox-blender-and-calculator/id986513867/reviews) | **[4.6 (93 ratings)](https://appshunter.io/ios/app/deep-tools/id1476093876/reviews)** |
| Number of ratings | 2 | **93** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 6 weeks** |
| Monetization | Paid | **Freemium** |
| Size | 85 MB | 12 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ComputerWare](https://appshunter.io/developer/475216885) | [Deep Blue d.o.o.](https://appshunter.io/developer/1476093875) |

## What reviewers say

### Nitrox Blender & Calculator

[App page](https://appshunter.io/ios/app/nitrox-blender-and-calculator/id986513867)

This app helps divers plan their dives by calculating maximum operating depth, optimal oxygen percentage, and equivalent air depth. It also assists in gas mixing for filling tanks, determining the required mix or the resulting blend.

**Highlights:** Calculate MOD, Calculate optimal oxygen percentage, Calculate equivalent air depth, Gas mixing calculations for tank fills, Determine required mix for desired blend, Calculate resulting mix from existing blend

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

**In-app purchases:** none


### Deep Tools

[App page](https://appshunter.io/ios/app/deep-tools/id1476093876)

This comprehensive dive toolkit helps recreational, advanced, and technical divers plan dives, log underwater adventures, and blend gases. It offers advanced planning tools, dive computer import, and essential calculations for safe and efficient diving.

**Highlights:** Advanced Deco Planner, Dive Log with Shearwater import, Gas Blender for Trimix/Nitrox, Maximum Operating Depth (MOD) calculator, No Decompression Limit (NDL) tracking, Metric and Imperial units

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subscription Monthly | $2.99 | per month |
| Subscription Yearly | $17.99 | per year |
| Lifetime Subscription | $39.99 | one-time |


## Frequently asked questions

### Is Nitrox Blender & Calculator free?

Nitrox Blender & Calculator costs $0.99, with no in-app purchases.

### Is Deep Tools free?

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

### Which has better reviews, Nitrox Blender & Calculator or Deep Tools?

Deep Tools is rated higher. Nitrox Blender & Calculator averages 4.5 out of 5 from 2 ratings, while Deep Tools averages 4.6 from 93 ratings.

### Do Nitrox Blender & Calculator or Deep Tools have ads?

Neither Nitrox Blender & Calculator nor Deep Tools shows ads.

### Which is updated more often, Nitrox Blender & Calculator or Deep Tools?

Nitrox Blender & Calculator ships an update every 9 months, and Deep Tools every 6 weeks. Most recently, Nitrox Blender & Calculator was updated on September 24, 2026 and Deep Tools on September 15, 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.*