Supported Features
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Dark Interface
Engineer's Unit Converter
HVAC, AWG, Torque, Pressure
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
32 categories, from length and mass to AWG wire gauge, HVAC tons, viscosity and radiation dose. Every one of them free. Works offline.
A unit converter built for engineering work rather than for the kitchen. Thirty-two categories, from the everyday ones to the specialist tables you normally go looking for in a handbook: AWG wire gauge, tons of refrigeration, viscosity, water hardness, radiation dose, moment of inertia.
EVERY CATEGORY, ALL FREE
Length, Area, Pressure/Stress, Mass/Weight, Energy/Work, Power, Force, Torque, Volume, Temperature, Time, Speed, Angle, Data, Frequency, Fuel Economy, Density, Flow, Viscosity, Acceleration, Electric Current, Voltage, Resistance, Electric Charge, Magnetic Flux Density, HVAC Cooling, Water Hardness, Radiation Activity, Radiation Dose, Radiation Equivalent Dose, Moment of Inertia, Wire Gauge.
No unlocks, no ad to watch first, no timer. Every category above is open the moment you install.
ENGINEERING TOOLS
An expression calculator that accepts arithmetic, fractions and scientific notation, so you can type 3/8 or 1.2e-3 straight into the field. An HVAC sizing helper that turns tons of refrigeration into BTU/h, kW and rule-of-thumb airflow. Reference tables for physical constants, thermocouple types and hardness scales.
BUILT FOR THE JOB
Works fully offline, so it does not care about signal on site. Reads decimal commas and points the way your region writes them. Pin the units you use, hide the ones you never touch, and reorder the rest. Add your own units with a conversion factor. Every conversion is kept in a searchable history you can tap to reuse. No account, no sign-in, no data leaves the device.
Ratings & Reviews
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Every category is now free.
• All 32 unit categories and the engineering tools are unlocked. No ad to watch, no unlock timer.
• Now properly translated into 33 languages. Unit and category names were showing in English everywhere; they are localised throughout.
• Decimal commas and points now follow your device region. Entering 1,234 in a comma-decimal locale reads as 1.234, not 1234.
• Devanagari and Arabic-Indic digits are accepted.
• Faster category lists and search.
• History saves one entry per conversion instead of one per keystroke.
• Ad privacy options added to Settings.
• Requires iOS 18.
The developer, Jose Gerardo Palma Duran, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Linked to You
The following data may be collected and linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
The developer indicated that this app supports the following accessibility features. Learn More
Information
- Seller
- Jose Gerardo Palma Duran
- Size
- 6.9 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
English and 30 more
- English, Bulgarian, Croatian, Czech, Danish, Dutch, Estonian, Finnish, French, German, Greek, Hindi, Hungarian, Icelandic, Italian, Japanese, Korean, Latvian, Lithuanian, Maltese, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Slovenian, Spanish, Swedish, Ukrainian
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Remove Ads $0.99
- Copyright
- © 2026 Jose Palma