# Ruud Calcu Save vs Azure ECM

The clearest difference is rating: Ruud Calcu Save at 4.3 against Azure ECM's 3.5. Ruud Calcu Save also leads on ratings volume (39 vs 8). Azure ECM's advantage is iOS requirement (9.0 vs 12.0). On price, review sentiment, update cadence and ads there is nothing between them.

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

Ruud Calcu Save holds the better App Store score, 4.3 against 3.5. Both are backed by a comparable volume of ratings — 39 and 8 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 21, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Ruud Calcu Save | Azure ECM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (39 ratings)](https://appshunter.io/ios/app/ruud-calcu-save/id1110122303/reviews)** | [3.5 (8 ratings)](https://appshunter.io/ios/app/azure-ecm/id6443461253/reviews) |
| Number of ratings | **39** | 8 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 37 MB | 38 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Copeland LP](https://appshunter.io/developer/464252882) | [Zhongshan Broad-Ocean Motor Co., Ltd.](https://appshunter.io/developer/1078141230) |

## What reviewers say

### Ruud Calcu Save

[App page](https://appshunter.io/ios/app/ruud-calcu-save/id1110122303)

This app helps HVAC contractors calculate and present cost savings for homeowners when replacing residential HVAC systems. It generates professional reports comparing different system options and current industry standards, which can be emailed to customers.

**Highlights:** Calculate HVAC replacement cost savings, Compare multiple system options, Generate graphical reports, Email reports to customers, Compare against industry minimum standards

**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 Ruud Calcu Save free?

Ruud Calcu Save is free to download, with no in-app purchases.

### Is Azure ECM free?

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

### Which has better reviews, Ruud Calcu Save or Azure ECM?

Ruud Calcu Save is rated higher. Ruud Calcu Save averages 4.3 out of 5 from 39 ratings, while Azure ECM averages 3.5 from 8 ratings.

### Do Ruud Calcu Save or Azure ECM have ads?

Neither Ruud Calcu Save nor Azure ECM shows ads.

### Which is updated more often, Ruud Calcu Save or Azure ECM?

Ruud Calcu Save ships an update every 2 months, and Azure ECM every 2 months. Most recently, Ruud Calcu Save was updated on October 21, 2026 and Azure ECM on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*