# MAGCalc Expansion

> Expansion vessel sizing

Canonical page: [https://chrome-stats.com/d/id6801678865](https://chrome-stats.com/d/id6801678865)

## Overview

- **ID:** `id6801678865`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Piotr Kaminski
- **Category:** Utilities
- **Version:** 1.0.0
- **Last updated:** 2026-08-22
- **First published:** 2026-08-22
- **Size:** 535 KB
- **Data as of:** 2026-09-22
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/magcalc-expansion/id6801678865)
- **Privacy policy:** [https://kamilunavo.com/magcalc/privacy](https://kamilunavo.com/magcalc/privacy)

## Description

Quickly estimate expansion vessel size, pre-charge and fill pressure directly on iPhone and iPad.

MAGCalc is a compact calculation aid for heating, HVAC and service technicians.

Features:
- Size heating expansion vessels for water-based systems
- Estimate water expansion from system volume and temperature
- Convert static height into pressure
- Calculate suggested pre-charge and fill pressure
- Show the next common vessel size
- German and English
- Works offline

MAGCalc Pro permanently unlocks manual expansion sizing for glycol, solar fluids and special media with a one-time In-App Purchase.

Important:
MAGCalc is a calculation aid for trained professionals. Manufacturer data, applicable standards, safety components, system design and actual measurements always take precedence.

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

## Rankings

- #1,754,785 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6801678865)