# Boiler Efficiency vs Stepper Motor Calculator

The clearest difference is update cadence: Boiler Efficiency at every 10 months against Stepper Motor Calculator's every 32 months. Stepper Motor Calculator's advantage is price ($2.99 vs $5.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Boiler Efficiency costs $5.99 and Stepper Motor Calculator $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Boiler Efficiency ships an update every 10 months, Stepper Motor Calculator every 32 months. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Boiler Efficiency | Stepper Motor Calculator |
| --- | --- | --- |
| Price | $5.99 | **$2.99** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 months** | Every 32 months |
| Monetization | Paid | — |
| Size | 2 MB | 1 MB |
| Requires iOS | 14.3 | **13** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kaup Shenoy Associates](https://appshunter.io/developer/460148822) | [Nitrio](https://appshunter.io/developer/321121189) |

## What reviewers say

### Boiler Efficiency

[App page](https://appshunter.io/ios/app/boiler-efficiency/id490506363)

Perform preliminary audits on boiler efficiency and identify various losses in steam generation. Customize boiler applications, compare fuel grades, and analyze heat balance and flue gas for potential savings and improvements.

**Highlights:** Boiler efficiency audits, Loss identification, Customizable boiler applications, Fuel grade comparison, Heat balance sheet, Flue gas analysis, CHP (Brayton) cycle analysis

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Stepper Motor Calculator

[App page](https://appshunter.io/ios/app/stepper-motor-calculator/id1367815636)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Boiler Efficiency free?

Boiler Efficiency costs $5.99, with no in-app purchases.

### Is Stepper Motor Calculator free?

Stepper Motor Calculator costs $2.99, with no in-app purchases.

### Do Boiler Efficiency or Stepper Motor Calculator have ads?

Neither Boiler Efficiency nor Stepper Motor Calculator shows ads.

### Which is updated more often, Boiler Efficiency or Stepper Motor Calculator?

Boiler Efficiency ships an update every 10 months, and Stepper Motor Calculator every 32 months. Most recently, Boiler Efficiency was updated on October 30, 2026 and Stepper Motor Calculator on October 29, 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.*