# BrennerCalc — Fast calculators for HVAC pros

> Fast calculators for HVAC pros (iPhone/iPad app by Piotr Kaminski.)

- Source: https://appshunter.io/ios/app/brennercalc/id6801656652 (this page in markdown: same URL + `.md`)
- Developer: [Piotr Kaminski](https://appshunter.io/developer/6799375980)
- Category: Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English, German (Germany)
- Released: 2026-08-22
- Data updated: 2026-08-31
- User reviews in markdown: https://appshunter.io/ios/app/brennercalc/id6801656652/reviews.md

## What is BrennerCalc?

BrennerCalc is a compact calculation tool for heating, HVAC and service technicians.

The app focuses on fast calculations without accounts, advertising or unnecessary distractions.

Features:
- Oil burner: account for nozzle size and pump pressure and calculate oil flow and output
- Reverse calculation: convert desired output into required nozzle size
- Gas: convert volume flow and heating value into burner input/output
- Hydronics: calculate required water flow from heat output and temperature difference
- Results in l/h, l/min, m³/h and kW
- German and English
- Works offline

BrennerCalc Pro permanently unlocks the additional gas and hydronic calculators with a one-time in-app purchase.

Important:
BrennerCalc is a calculation aid for trained professionals. Manufacturer specifications, applicable standards, commissioning measurements and combustion analysis always take precedence.

EULA: 
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| BrennerCalc Pro | $3.99 | one-time |



## Version history (last 1 release)

### 1.0.0 — 2026-08-22

No release notes.

## More apps by Piotr Kaminski

- [MAGCalc Expansion](https://appshunter.io/ios/app/magcalc-expansion/id6801678865)
- [HydroCalc SHK](https://appshunter.io/ios/app/hydrocalc-shk/id6801788464)
- [KeepMeter](https://appshunter.io/ios/app/keepmeter/id6803227186)
- [NavoTap](https://appshunter.io/ios/app/navotap/id6803636049)
- [Kamilunavo Trace](https://appshunter.io/ios/app/kamilunavo-trace/id6803765449)

All apps by Piotr Kaminski: https://appshunter.io/developer/6799375980

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-31.*