Wolf Netzrechner vs HydroniCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Wolf Netzrechner
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Die WOLF Netzrechner App ist Deine digitale Hilfe für den Projektalltag. Mit dem Netzrechner Lüftung kannst Du Lüftungsnetze dimensionieren und in Sekundenschnelle zwischen verschiedenen Abmessungen variieren. Sowohl die Berechnung von Kanalnetzen als auch von Rohrnetzen sind in der App integriert. Die App wird durch die Firma Wolf (Schweiz) AG laufend weiterentwickelt. Anregungen, Anmerkungen oder Entwicklungswünsche nehmen wir im Review gerne entgegen.
HydroniCalc
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HydroniCalc brings together 23 hydronic calculators for heating engineers and installers of water-based heating systems. Everything runs in metric units, offline, and without an account. The calculators are grouped into four families: • Basic hydraulics and pipework: power, flow and temperature difference, diameter and velocity, linear and fitting pressure losses. • Valves, balancing and circulator: the Kv / flow / pressure-drop relationship, valve sizing, balancing, and the pump operating point. • Pressurization, volumes and separation: fill pressure, water expansion, expansion vessel, and system volumes. • Radiators and underfloor heating: radiator output correction, sizing, and underfloor loop length. Each calculator shows the values to enter and displays the result as soon as the required data is valid. An info button explains the purpose of the calculation, the expected inputs, the method, the results, and the usage limits. Built-in Kv tables: look up the Kv values published by manufacturers (manufacturer, product, and generation), then copy a value to paste into your calculation. The tables never fill a calculation automatically; the value is always typed or pasted into the field. Recent calculations: your ten most recent successful calculations are stored locally, so you can find them again and resume them with their values. Eleven calculators are free to use. A single, non-subscription purchase permanently unlocks the other twelve for the Apple account used. If a purchase isn’t recognized, “Restore Purchases” asks the App Store to sync it again.
Screenshots
Verdict
The clearest difference is in-app purchases: Wolf Netzrechner at none against HydroniCalc's 1. Wolf Netzrechner also leads on iOS requirement (14.0 vs 17.0). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. HydroniCalc sells 1 one-off in-app purchase. Wolf Netzrechner asks for nothing beyond the download.
| Parameter | Wolf Netzrechner | HydroniCalc |
|---|---|---|
| Price | Free | Free |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 14.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 20 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | arcade solutions ag | Eric Chmara |
In-app purchases
Wolf Netzrechner
No in-app purchases
HydroniCalc
- Unlock All Calculators$12.99









