# Deep Tools vs Buoyancy Calc

The clearest difference is rating: Deep Tools at 4.6 against Buoyancy Calc's 3.1. Deep Tools also leads on update cadence (every 6 weeks vs every 3 months) and review sentiment (50% vs 40%). Buoyancy Calc's advantage is in-app purchases (none vs 3). On price, ads, device support and iOS requirement there is nothing between them.

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

Deep Tools holds the better App Store score, 4.6 against 3.1. Both are backed by a comparable volume of ratings — 93 and 25 respectively. Written reviews point the same way: 50% of Deep Tools's written reviews are positive against 40% of Buoyancy Calc's.

Deep Tools ships an update every 6 weeks, Buoyancy Calc every 3 months. The most recent releases landed on September 15, 2026 and June 8, 2026 respectively.

## The numbers

| Metric | Deep Tools | Buoyancy Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (93 ratings)](https://appshunter.io/ios/app/deep-tools/id1476093876/reviews)** | [3.1 (25 ratings)](https://appshunter.io/ios/app/buoyancy-calc/id1482332472/reviews) |
| Number of ratings | **93** | 25 |
| Positive reviews | **50.0% of reviews** | 40.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Freemium | **Free** |
| Size | 12 MB | 1 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Deep Blue d.o.o.](https://appshunter.io/developer/1476093875) | [Eric Hamiter](https://appshunter.io/developer/1482332471) |

## 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 |


### Buoyancy Calc

[App page](https://appshunter.io/ios/app/buoyancy-calc/id1482332472)

Calculate the optimal weight for scuba diving based on environmental factors. Input your weight, water type, tank, and exposure suit to get a suggested weight for neutral buoyancy.

**Highlights:** Calculate suggested diving weight, Adjust for water type, Adjust for tank type, Adjust for exposure suit, Supports pounds and kilograms

**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 Buoyancy Calc free?

Buoyancy Calc is free to download, with no in-app purchases.

### Which has better reviews, Deep Tools or Buoyancy Calc?

Deep Tools is rated higher. Deep Tools averages 4.6 out of 5 from 93 ratings, while Buoyancy Calc averages 3.1 from 25 ratings.

### Do Deep Tools or Buoyancy Calc have ads?

Neither Deep Tools nor Buoyancy Calc shows ads.

### Which is updated more often, Deep Tools or Buoyancy Calc?

Deep Tools ships an update every 6 weeks, and Buoyancy Calc every 3 months. Most recently, Deep Tools was updated on September 15, 2026 and Buoyancy Calc on June 8, 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.*