# Deep Tools vs Surface Air Consumption

The clearest difference is review sentiment: Surface Air Consumption at 100% against Deep Tools's 50%. Surface Air Consumption also leads on in-app purchases (none vs 3) and rating (5.0 vs 4.6). Deep Tools's advantage is ratings volume (93 vs 2). On price, ads and device support there is nothing between them.

Both are free to download. Deep Tools sells 3 in-app purchases, starting at $2.99 per month. Surface Air Consumption asks for nothing beyond the download.

Surface Air Consumption holds the better App Store score, 5.0 against 4.6. 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 point the same way: 50% of Deep Tools's written reviews are positive against 100% of Surface Air Consumption's.

Deep Tools ships an update every 6 weeks, Surface Air Consumption weekly. The most recent releases landed on October 3, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Deep Tools | Surface Air Consumption |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (93 ratings)](https://appshunter.io/ios/app/deep-tools/id1476093876/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/surface-air-consumption/id1532974489/reviews)** |
| Number of ratings | **93** | 2 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | Freemium | **Free** |
| Size | 12 MB | 1 MB |
| Requires iOS | 15.6 | **13.6** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Deep Blue d.o.o.](https://appshunter.io/developer/1476093875) | [Leridian Dynamics, Inc.](https://appshunter.io/developer/1356342542) |

## What reviewers say

### 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 |


### Surface Air Consumption

[App page](https://appshunter.io/ios/app/surface-air-consumption/id1532974489)

This utility calculates surface air consumption (SAC) rates and air needs at depth using only user-provided dive profile data. It does not compute nitrogen absorption or decompression limits. Always prioritize safety and consult official decompression tables.

**Highlights:** Calculates SAC Rate, Estimates air requirements at depth, User input based calculations, Dive profile analysis, Focuses solely on air consumption

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Deep Tools free?

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

### Is Surface Air Consumption free?

Surface Air Consumption is free to download, with no in-app purchases.

### Which has better reviews, Deep Tools or Surface Air Consumption?

Surface Air Consumption is rated higher. Deep Tools averages 4.6 out of 5 from 93 ratings, while Surface Air Consumption averages 5.0 from 2 ratings.

### Do Deep Tools or Surface Air Consumption have ads?

Neither Deep Tools nor Surface Air Consumption shows ads.

### Which is updated more often, Deep Tools or Surface Air Consumption?

Deep Tools ships an update every 6 weeks, and Surface Air Consumption weekly. Most recently, Deep Tools was updated on October 3, 2026 and Surface Air Consumption on October 16, 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.*