Comparison

Hydraulic schemes vs PHD Actuator Sizing

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Read full description

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

About

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.

Highlights
  • Select from full actuator lineup
  • Input motion profiles
  • Automatic RMS torque calculations
  • Inertia ratio verification
  • Peak torque and speed checks
  • Exportable sizing reports
Features
Read full description

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

Hydraulic schemes4 screens
PHD Actuator Sizing4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
Hydraulic schemes versus PHD Actuator Sizing: the parameters behind the verdict, then further details
ParameterHydraulic schemesPHD Actuator Sizing
Price$0.99Free — better
Rating5.0 (1 ratings)5.0 (2 ratings)
Positive reviews76.9% of reviews—
Number of ratings12 — better
Update frequencyEvery 2 weeks — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS11.0 — better17.6
Further details — not scored
Size10 MB1 MB
Age rating4+17+
DeveloperAngel MartinezKrishna Meruva

Customer experience

Hydraulic schemes

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews13 reviews
Positive76.9%
Neutral7.7%
Negative15.4%

PHD Actuator Sizing

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Hydraulic schemes

One-time1
  • Remove ads, save/edit diagram$3.99
None

PHD Actuator Sizing

No in-app purchases

Questions

Is Hydraulic schemes free?
Hydraulic schemes costs $0.99, and also offers in-app purchases.
Is PHD Actuator Sizing free?
PHD Actuator Sizing is free to download, with no in-app purchases.
Which has better reviews, Hydraulic schemes or PHD Actuator Sizing?
Hydraulic schemes and PHD Actuator Sizing are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.
Do Hydraulic schemes or PHD Actuator Sizing have ads?
Neither Hydraulic schemes nor PHD Actuator Sizing shows ads.
Which is updated more often, Hydraulic schemes or PHD Actuator Sizing?
Hydraulic schemes ships an update every 2 weeks, and PHD Actuator Sizing every 3 weeks. Most recently, Hydraulic schemes was updated on November 7, 2026 and PHD Actuator Sizing on October 31, 2026.

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