# Boiler Efficiency vs Darcy Weisbach Equations Calc

The clearest difference is update cadence: Boiler Efficiency at every 10 months against Darcy Weisbach Equations Calc's every 26 months. Darcy Weisbach Equations Calc's advantage is price ($2.99 vs $5.99). On review sentiment, ads, in-app purchases and monetization model there is nothing between them.

Boiler Efficiency costs $5.99 and Darcy Weisbach Equations Calc $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, Darcy Weisbach Equations Calc every 26 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Boiler Efficiency | Darcy Weisbach Equations Calc |
| --- | --- | --- |
| Price | $5.99 | **$2.99** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 months** | Every 26 months |
| Monetization | Paid | 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


### Darcy Weisbach Equations Calc

[App page](https://appshunter.io/ios/app/darcy-weisbach-equations-calc/id1448457638)

This physics and math calculator quickly computes fluid head loss, friction factor, and other pipe flow parameters. It supports various units and offers precise calculations up to 16 decimal places. Results can be easily copied to other applications.

**Highlights:** Instant calculation, Copyable results, Formula reference, 16 decimal place precision, Multiple unit support, Ad-free and private

**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 Darcy Weisbach Equations Calc free?

Darcy Weisbach Equations Calc costs $2.99, with no in-app purchases.

### Do Boiler Efficiency or Darcy Weisbach Equations Calc have ads?

Neither Boiler Efficiency nor Darcy Weisbach Equations Calc shows ads.

### Which is updated more often, Boiler Efficiency or Darcy Weisbach Equations Calc?

Boiler Efficiency ships an update every 10 months, and Darcy Weisbach Equations Calc every 26 months. Most recently, Boiler Efficiency was updated on November 1, 2026 and Darcy Weisbach Equations Calc on November 6, 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.*