# MultiDeco vs Retra UWT

The clearest difference is review sentiment: Retra UWT at 100% against MultiDeco's 39%. Retra UWT also leads on price (Free vs $48.99) and rating (4.7 vs 3.9). MultiDeco's advantage is chart position (#100 vs unranked) and ratings volume (11 vs 3). On update cadence, ads, in-app purchases and device support there is nothing between them.

Retra UWT is free to download; MultiDeco costs $48.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Retra UWT holds the better App Store score, 4.7 against 3.9. Both are backed by a comparable volume of ratings — 11 and 3 respectively. Written reviews point the same way: 39% of MultiDeco's written reviews are positive against 100% of Retra UWT's.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 19, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | MultiDeco | Retra UWT |
| --- | --- | --- |
| Price | $48.99 | **Free** |
| Rating | [3.9 (11 ratings)](https://appshunter.io/ios/app/multideco/id781437836/reviews) | **[4.7 (3 ratings)](https://appshunter.io/ios/app/retra-uwt/id1472741374/reviews)** |
| Number of ratings | **11** | 3 |
| Positive reviews | 38.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Paid | **Free** |
| Best chart rank | **#100** | — |
| Size | 2 MB | 51 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [HHS Software Corp.](https://appshunter.io/developer/301978863) | [Retra UWT, Ltd.](https://appshunter.io/developer/1472741373) |

## What reviewers say

### MultiDeco

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

**Currently charting:** #100 Top Paid · Utilities (US App Store)

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


### Retra UWT

[App page](https://appshunter.io/ios/app/retra-uwt/id1472741374)

This app connects to compatible flash devices, allowing users to monitor usage statistics, receive firmware updates, and access user manuals. It serves as a comprehensive tool for managing and maintaining your flash hardware.

**Highlights:** Connect to Retra Flash devices, View usage statistics, Receive firmware updates, Access user manuals, Device management

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MultiDeco free?

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

### Is Retra UWT free?

Retra UWT is free to download, with no in-app purchases.

### Which has better reviews, MultiDeco or Retra UWT?

Retra UWT is rated higher. MultiDeco averages 3.9 out of 5 from 11 ratings, while Retra UWT averages 4.7 from 3 ratings.

### Do MultiDeco or Retra UWT have ads?

Neither MultiDeco nor Retra UWT shows ads.

### Which is updated more often, MultiDeco or Retra UWT?

MultiDeco ships an update every 3 months, and Retra UWT every 3 months. Most recently, MultiDeco was updated on September 19, 2026 and Retra UWT on September 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.*