Combi Valve Sizer vs HyTools
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Combi Valve Sizer
This app simplifies the selection of specific HVAC components. It guides users through choosing the correct valve and actuator, calculates flow rates, and assists with presetting and commissioning. Users can also tag components and download reports.
- Guided valve and actuator selection
- Valve sizing and flow calculation
- Valve presetting calculation
- Tagging valve location and designation
- Commissioning check with reports
- Data sheet downloads
- Report sharing
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Combi Valve Sizer app from Siemens helps to select the right Acvatix PICV (combi valve) and matching actuator easily. Features: - Guided valve and actuator selection - Valve sizing - Calculation of maximum volumetric flow - Calculation of valve presetting - Tagging the valve location and designation - Commissioning check with report - Data sheets download - Sharing of reports and documents
HyTools
This app provides HVAC professionals with a comprehensive suite of hydronic calculation tools. It assists with tasks like valve sizing, pressure drop calculations, and radiator power estimation. The tool offers unit conversion and language selection for user convenience.
- Hydronic calculator
- Valve sizing and presetting
- Radiator power estimation
- Pipe sizing
- Unit conversion
- Pressure maintenance calculation
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IMI Hydronic Engineering proudly presents HyTools, the user-friendly hydronic calculator App for HVAC professionals. Features include: - Hydronic calculator (enter any two values and get the third one): - flow - Kv/Cv - pressure drop - power - flow - temperature difference - flow - valve setting - pressure drop - Dirt and air separator pressure drop calculation - Valve sizing and presetting - Radiator power estimation (panel and column) - Radiator valve sizing and presetting - Pipe sizing - Unit conversion - Run-time selection of localisation - Run-time selection of language - Pressure maintenance and vacuum degassing calculation and selection for heating, cooling and solar systems Stay tuned for great upcoming updates adding further hydronic calculation functions. Please visit www.imi-hydronic.com for more information and contact details. Phone numbers to local support can be found here: http://www.imi-hydronic.com/en/contact/ IMI Hydronic Engineering International SA is the leading global provider and expert in hydronic distribution systems and room temperature control, with experience in more than 100,000 projects worldwide. We help our customers everywhere optimise HVAC systems so they deliver desired comfort with optimal efficiency. IMI Hydronic Engineering is part of the international engineering group IMI plc which is listed as a member of the FTSE 100 on the London Stock Exchange.
Screenshots
Verdict
The clearest difference is review sentiment: HyTools at 50% against Combi Valve Sizer's 0%. HyTools also leads on update cadence (every 6 weeks vs every 9 months). Combi Valve Sizer's advantage is iOS requirement (7.0 vs 15.0). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
Combi Valve Sizer ships an update every 9 months, HyTools every 6 weeks. The most recent releases landed on June 10, 2026 and July 25, 2026 respectively.
| Parameter | Combi Valve Sizer | HyTools |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.0 (5 ratings) — better |
| Positive reviews | 0.0% of reviews | 50.0% of reviews — better |
| Number of ratings | — | 5 — better |
| Update frequency | Every 9 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 7.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 50 MB | 114 MB |
| Age rating | 4+ | 4+ |
| Developer | Siemens AG | IMI Hydronic Engineering International SA |
Customer experience
Combi Valve Sizer
HyTools
In-app purchases
Combi Valve Sizer
No in-app purchases
HyTools
No in-app purchases
