Caleffi View vs HydroniCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Caleffi View
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Thanks to Caleffi View you can connect Monitor 2.0 and Legiomix Evo to our Cloud, create your building and view all the indirect metering data. Access Caleffi View to have a complete picture of your consumption remotely!
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: Caleffi View at none against HydroniCalc's 1. Caleffi View also leads on iOS requirement (15.1 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. Caleffi View asks for nothing beyond the download.
| Parameter | Caleffi View | HydroniCalc |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 32 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Caleffi S.p.A | Eric Chmara |
In-app purchases
Caleffi View
No in-app purchases
HydroniCalc
- Unlock All Calculators$12.99









