# Rheem Calcu Save vs BluArch

The clearest difference is rating: BluArch at 4.8 against Rheem Calcu Save's 4.3. Rheem Calcu Save's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.0). On price, ratings volume, 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.

BluArch holds the better App Store score, 4.8 against 4.3. Both are backed by a comparable volume of ratings — 44 and 25 respectively.

Rheem Calcu Save ships an update every 2 months, BluArch monthly. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Rheem Calcu Save | BluArch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (44 ratings)](https://appshunter.io/ios/app/rheem-calcu-save/id1110121420/reviews) | **[4.8 (25 ratings)](https://appshunter.io/ios/app/bluarch/id1622231631/reviews)** |
| Number of ratings | **44** | 25 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | Free |
| Size | 20 MB | 120 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Copeland LP](https://appshunter.io/developer/464252882) | [Rheem Manufacturing Company](https://appshunter.io/developer/853793269) |

## What reviewers say

### Rheem Calcu Save

[App page](https://appshunter.io/ios/app/rheem-calcu-save/id1110121420)

This app helps HVAC contractors quickly calculate and present potential cost savings to homeowners when comparing residential HVAC system replacements. It generates professional reports showing annual savings for high-efficiency systems, aiding customer decision-making.

**Highlights:** Calculate HVAC system replacement cost savings, Compare multiple replacement options, Generate professional graphical reports, Email reports to customers, Uses Emerson Climate Technologies OPI database, Compares against industry minimum standards

**Features:** macOS Compatibility

**In-app purchases:** none


### BluArch

[App page](https://appshunter.io/ios/app/bluarch/id1622231631)

This app simplifies HVAC system installation and troubleshooting for contractors. It uses Bluetooth to connect with compatible systems, allowing for quick setup, parameter monitoring, and diagnostics directly from a smartphone.

**Highlights:** Bluetooth system setup, Monitor operating parameters, Verify system setup, Diagnose alarms, Step-by-step parts replacement

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Rheem Calcu Save free?

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

### Is BluArch free?

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

### Which has better reviews, Rheem Calcu Save or BluArch?

BluArch is rated higher. Rheem Calcu Save averages 4.3 out of 5 from 44 ratings, while BluArch averages 4.8 from 25 ratings.

### Do Rheem Calcu Save or BluArch have ads?

Neither Rheem Calcu Save nor BluArch shows ads.

### Which is updated more often, Rheem Calcu Save or BluArch?

Rheem Calcu Save ships an update every 2 months, and BluArch monthly. Most recently, Rheem Calcu Save was updated on November 2, 2026 and BluArch on November 4, 2026.

---

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