Combi Valve Sizer vs Hydraulic schemes
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
Hydraulic schemes
Easily design hydraulic, heating, cooling, and air conditioning schematics. Drag and drop symbols to quickly build your diagrams. Save and edit your work with the PRO version.
- Create hydraulic schemes
- Drag and drop symbol placement
- Extensive symbol library
- Save and edit schemes (PRO)
- Export as image or PDF
- Multiple HVAC system support
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This tool will allow you to create your own hydraulic scheme (heat, cold, air conditioning) quickly and easily, you simply have to select the symbol you want to use, drag and drop it in the desired position. Symbols: Valves: 2, 3 and 4-way, mixing, control, balancing, butterfly, gate, safety, overflow, non-return, thermostatic, pump, flowmeter, meter, flow switch, pressure gauge, air and dirty separator, drain, temperature probe, boiler, heat pump, indoor and outdoor unit, accumulator, inter-accumulator, heat and cold exchanger, collector, thermostat, radiator, underfloor heating, pressure reducer, filter, resistor, sleeve, tap, buffer tank, gas, solar panels, coil, oven, swimming pool, emitters. # BASIC Version # * You can create your scheme with the same symbols as the Version PRO * You can only work with a scheme although you can share it as an image, pdf or file * Once you create a scheme you will no longer be able to open another (they are not saved) # PRO Version # (1 - In-App Purchases) * You will be able to open, edit and save a scheme * Open in the following examples (link) ------------- * More examples: https://drive.google.com/drive/folders/1W6HFnDNsZAZonUlPn5tEPEnbZOuACjxN?usp=sharing
Screenshots
Verdict
The clearest difference is review sentiment: Hydraulic schemes at 77% against Combi Valve Sizer's 0%. Hydraulic schemes also leads on update cadence (every 2 weeks vs every 9 months). Combi Valve Sizer's advantage is price (Free vs $0.99) and in-app purchases (none vs 1). On 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
Combi Valve Sizer is free to download; Hydraulic schemes costs $0.99 up front. Hydraulic schemes sells 1 one-off in-app purchase. Combi Valve Sizer asks for nothing beyond the download.
Combi Valve Sizer ships an update every 9 months, Hydraulic schemes every 2 weeks. Both last shipped on October 25, 2026.
| Parameter | Combi Valve Sizer | Hydraulic schemes |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | 76.9% of reviews — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 9 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 7.0 — better | 11.0 |
| Further details — not scored | ||
| Size | 50 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Siemens AG | Angel Martinez |
Customer experience
Combi Valve Sizer
Hydraulic schemes
In-app purchases
Combi Valve Sizer
No in-app purchases
Hydraulic schemes
- Remove ads, save/edit diagram$3.99
Questions
Is Combi Valve Sizer free?
Is Hydraulic schemes free?
Do Combi Valve Sizer or Hydraulic schemes have ads?
Which is updated more often, Combi Valve Sizer or Hydraulic schemes?
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