# MultiDeco vs Deep Tools

The clearest difference is price: Deep Tools at Free against MultiDeco's $48.99. Deep Tools also leads on rating (4.6 vs 3.9) and ratings volume (93 vs 11). MultiDeco's advantage is in-app purchases (none vs 3). On update cadence, ads and device support there is nothing between them.

Deep Tools is free to download; MultiDeco costs $48.99 up front. Deep Tools sells 3 in-app purchases, starting at $2.99 per month. MultiDeco asks for nothing beyond the download.

Deep Tools holds the better App Store score, 4.6 against 3.9. That said, the two scores are not equally well evidenced: Deep Tools has 93 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 39% of MultiDeco's written reviews are positive against 50% of Deep Tools's.

MultiDeco ships an update every 3 months, Deep Tools every 6 weeks. The most recent releases landed on September 19, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | MultiDeco | Deep Tools |
| --- | --- | --- |
| Price | $48.99 | **Free** |
| Rating | [3.9 (11 ratings)](https://appshunter.io/ios/app/multideco/id781437836/reviews) | **[4.6 (93 ratings)](https://appshunter.io/ios/app/deep-tools/id1476093876/reviews)** |
| Number of ratings | 11 | **93** |
| Positive reviews | 38.9% of reviews | **50.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Paid | **Freemium** |
| Size | 2 MB | 12 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HHS Software Corp.](https://appshunter.io/developer/301978863) | [Deep Blue d.o.o.](https://appshunter.io/developer/1476093875) |

## What reviewers say

### MultiDeco

[App page](https://appshunter.io/ios/app/multideco/id781437836)

This app calculates dive decompression for technical scuba divers using VPM and ZHL-16 models. It supports various gas mixes, planning methods for open circuit and rebreathers, and includes tools for gas blending and depth calculations.

**Highlights:** VPM and ZHL-16 decompression models, Support for nitrox and trimix, OC and CCR planning, Bailout planning, Gas blending utility, Depth calculation tools

**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 MultiDeco free?

MultiDeco costs $48.99, with no in-app purchases.

### Is Deep Tools free?

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

### Which has better reviews, MultiDeco or Deep Tools?

Deep Tools is rated higher. MultiDeco averages 3.9 out of 5 from 11 ratings, while Deep Tools averages 4.6 from 93 ratings.

### Do MultiDeco or Deep Tools have ads?

Neither MultiDeco nor Deep Tools shows ads.

### Which is updated more often, MultiDeco or Deep Tools?

MultiDeco ships an update every 3 months, and Deep Tools every 6 weeks. Most recently, MultiDeco was updated on September 19, 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.*