# DS vs Azure ECM

The clearest difference is update cadence: Azure ECM at every 2 months against DS's every 28 months. Azure ECM also leads on iOS requirement (9.0 vs 11.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

DS ships an update every 28 months, Azure ECM every 2 months. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | DS | Azure ECM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (5 ratings)](https://appshunter.io/ios/app/azure-ecm/id6443461253/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 34 MB | 38 MB |
| Requires iOS | 11.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [JB Industries, Inc.](https://appshunter.io/developer/977734857) | [Zhongshan Broad-Ocean Motor Co., Ltd.](https://appshunter.io/developer/1078141230) |

## What reviewers say

### DS

[App page](https://appshunter.io/ios/app/ds-250/id1509336200)

**Features:** macOS Compatibility

**In-app purchases:** none


### Azure ECM

[App page](https://appshunter.io/ios/app/azure-ecm/id6443461253)

This utility app enables precise adjustment of individual Azure motor speed taps to optimize system CFM. It allows for single-tap adjustments on energized taps, with specific limitations on factory-locked taps. Users can reduce torque for lower speeds by selecting alternative taps.

**Highlights:** Adjust individual Azure motor speed taps, Optimize system CFM, Single-tap adjustment on energized taps, Reduce torque for lower speeds, Supports iPhone and iPad

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DS free?

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

### Is Azure ECM free?

Azure ECM is free to download, with no in-app purchases.

### Do DS or Azure ECM have ads?

Neither DS nor Azure ECM shows ads.

### Which is updated more often, DS or Azure ECM?

DS ships an update every 28 months, and Azure ECM every 2 months. Most recently, DS was updated on October 3, 2026 and Azure ECM on October 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.*