UnitStation Pro - Engineering
Engineering Converters & Calcs
$2.99 · Designed for iPad. Not verified for macOS.
The professional toolkit for engineers and technicians. Convert
units, run calculations, explore formulas, and get AI-powered
engineering help.
Smart Unit Converter Pro is the all-in-one engineering toolkit
built for engineers, technicians, construction professionals,
and engineering students who need speed, accuracy, and offline
reliability in the field or at the desk.
UNIVERSAL UNIT CONVERTER
Convert across 14 engineering categories and 100+ units -
Length, Area, Volume, Mass, Temperature, Pressure (PSI, kPa,
bar, atm), Force, Torque, Velocity, Flow Rate (GPM, SCFM,
m3/hr), Power (hp, kW, BTU/hr), Energy, Electrical, and
Density. Every conversion is instant with real-time updates,
a full multi-unit table, and one-tap copy or save.
NATURAL LANGUAGE INPUT
Type conversions the way engineers say them:
150 psi to kPa
500 GPM to m3/hr
100 hp to kW
The app detects the source and target units automatically and
returns the result immediately, with support for common
engineering abbreviations.
ENGINEERING CALCULATOR LIBRARY
A searchable library of ready-to-use engineering calculators:
- Reynolds Number and flow regime detection
- Darcy-Weisbach pressure drop
- Pipe flow velocity
- Simply supported and cantilever beam analysis
- Concrete volume and material estimation
- Ohm's Law (solve for any variable)
- Single and three-phase AC power
- Heat transfer (Newton's Law of Cooling)
- Pump hydraulic and shaft power
- Motor full-load amperes
More calculators added with every update.
FORMULA REFERENCE LIBRARY
A searchable formula database covering Fluid Mechanics,
Thermodynamics, Structural and Civil Engineering, Electrical
Engineering, Mechanical Engineering, and Engineering
Mathematics. Every formula includes variable definitions,
units, and engineering notes you can bookmark as favorites.
ENGINEERING REFERENCE DATABASE
Offline material property tables for Steel, Aluminum, Copper,
Brass, Titanium, PVC, HDPE, Concrete, and more - including
density, Young's modulus, yield strength, thermal conductivity,
specific heat, and electrical resistivity. Physical constants
library includes gravity, gas constant, Boltzmann constant,
Stefan-Boltzmann constant, and 15 others.
AI ENGINEERING ASSISTANT
Ask any engineering question in plain language and get a
precise, formula-driven answer. Connect your own API key to
use any major AI provider:
- Local (fully offline, no key required)
- OpenAI (GPT-4o, GPT-4o Mini, GPT-3.5)
- Anthropic (Claude Sonnet, Claude Haiku)
- Groq (Llama 3.3, Mixtral - ultra-fast, free tier)
- Grok by xAI (Grok-2)
- Google Gemini (2.0 Flash, 1.5 Pro - free tier)
- Mistral (Large, Small, Codestral)
Your API key is stored on your device only and never shared.
OCR CAMERA SCANNER
Point your camera at any equipment label, gauge, or nameplate.
The app reads values like 150 psi, 500 GPM, or 75 hp and
instantly offers conversion options via a bottom sheet. Powered
by Apple's Vision framework with no cloud upload required.
ENGINEERING WORKSPACES
Organize your work by project. Each workspace saves your
conversions, calculation results, and notes in one place.
Export any workspace as a text report to share with your team.
DESIGNED FOR PROFESSIONAL USE
- Works fully offline - no internet required for core features
- Dark mode with a vibrant engineering color palette
- Large, readable monospaced numbers
- iPad and iPhone support in all orientations
- SwiftData persistence - your history is always there
Whether you are sizing a pump, checking a pipe pressure drop,
verifying a beam deflection, or just converting units on the
job site, Smart Unit Converter Pro gives you the right answer
fast.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Yuhsiu Lai, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Yuhsiu Lai
- Size
- 5.1 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 iTech Tools
