Hydraulic schemes vs PHD Actuator Sizing
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
PHD Actuator Sizing
This engineering tool helps automation professionals quickly size servo motors for industrial applications. It allows users to input motion profiles and automatically calculates torque and inertia for accurate motor selection. Generate detailed reports and verify performance against motor specifications.
- Select from full actuator lineup
- Input motion profiles
- Automatic RMS torque calculations
- Inertia ratio verification
- Peak torque and speed checks
- Exportable sizing reports
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PHD Actuator Sizing Tool is a professional engineering application designed for automation engineers and system integrators. Quickly size Teknic ClearPath servo motors with PHD actuators for your industrial automation applications — right from your iPhone. Key Features: • Select from PHD's full actuator lineup — ECV ball screw cylinders, ESU/ESW ball screw and timing belt slides • Input motion profiles including velocity, acceleration, payload, and orientation • Automatic RMS torque calculations for accurate thermal motor sizing • Inertia ratio verification to ensure stable servo performance • Peak torque and speed checks against motor specifications • Detailed sizing reports with charts and exportable results • Comprehensive Teknic IPHP motor database built in • Clean, fast interface optimized for field and office use Contact info: Krishna Meruva, kmeruva@gmail.com
Screenshots
Verdict
The clearest difference is price: PHD Actuator Sizing at Free against Hydraulic schemes's $0.99. PHD Actuator Sizing also leads on in-app purchases (none vs 1). Hydraulic schemes's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 17.6). On rating, ratings volume, update cadence and ads 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
PHD Actuator Sizing is free to download; Hydraulic schemes costs $0.99 up front. Hydraulic schemes sells 1 one-off in-app purchase. PHD Actuator Sizing asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Hydraulic schemes against 5.0 for PHD Actuator Sizing. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
Hydraulic schemes ships an update every 2 weeks, PHD Actuator Sizing every 3 weeks. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.
| Parameter | Hydraulic schemes | PHD Actuator Sizing |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Positive reviews | 76.9% of reviews | — |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 2 weeks — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 11.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 10 MB | 1 MB |
| Age rating | 4+ | 17+ |
| Developer | Angel Martinez | Krishna Meruva |
Customer experience
Hydraulic schemes
PHD Actuator Sizing
In-app purchases
Hydraulic schemes
- Remove ads, save/edit diagram$3.99
PHD Actuator Sizing
No in-app purchases
Questions
Is Hydraulic schemes free?
Is PHD Actuator Sizing free?
Which has better reviews, Hydraulic schemes or PHD Actuator Sizing?
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