Supported Features
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VoiceOver
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Voice Control
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Larger Text
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Dark Interface
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Reduced Motion
Converter of Units
Measurements, dates and tank
Free · Designed for iPad. Not verified for macOS.
Updated for iOS and iPadOS 26.x, new iPhone 17 (all models) and iPad. Quick Notes, keyboard shortcuts, multiple windows, sidebar and Stage Manager in iPadOS.
The unit converter feature from our popular aio Calculator is now available as a standalone app. Always free and without ads.
It's an easy to use and modern converter with a unique combination of features which include:
• Available on all iPad, iPhone and iPod devices
• Sidebar and Tab bar for easier navigation and sharing of data
• Multiple Windows
• Stage Manager
• Drag and Drop from the Sidebar to the edge of the screen to create new windows
• Context Menus
• Quick Start Guide
• Light and Dark appearance
• Multitasking
• Full support for drag and drop
• Quick Notes
• Capture text
• Keyboard shortcuts
• Pointer interaction
• Two finger swipe for quick editing in Unit Converter and History
• Slider for precision control
• Undo and redo
• HomeScreen icon for quick actions
• Spotlight search
• Accessibility features like VoiceOver and Dynamic Type (larger text)
• Allows you to share results; including using AirDrop
• Takes advantage of the larger display in iPad
• Settings to customize the app
• Conversions saved and restored for all measurements
• Quick Convert feature
Has close to 500 units in the following 38 measurements:
• Area
• Acceleration
• Angle
• Computer Data Storage
• Computer Data Rate
• Concentration - Glucose
• Currency
• Density
• Energy
• Electric Vehicle Efficiency
• Electrical Current
• Electrical Voltage
• Electrical Charge
• Electrical Resistance
• Electrical Inductance
• FlowRate-Liquid
• FlowRate-Dry
• Force
• Frequency
• Fuel Economy
• Illumination
• Ladies Shoe Size
• Length
• Luminance
• Mens Shoe Size
• Magnetic Field Strength
• Magnetic Flux
• Magnetic Flux Density
• Magnetomotive Force
• Mass / Weight
• Power
• Pressure
• Speed / Velocity
• Temperature
• Time
• Torque
• Volume - Liquid Capacity
• Volume - Dry Capacity
Date calculators
• Calculate the difference between two dates
• Add (or subtracting) from a given date
Tank Capacity
• Horizontal Cylinder
• Vertical Cylinder
• Rectangular
• Horizontal Oval
• Vertical Oval
• Horizontal Capsule
• Vertical Capsule
• Sphere
Mixture Calculator
• Calculate the needed volume for a mixture at a given ratio
Info feature
• Detailed description of the app available in all features
• Table of contents and search allow you to find topics of interest
Email requests to have more measurements or units added.
Future updates will continue to add more features.
Enjoy our app that, as always, is free and without ads!
Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Corrected focus and number pad problem in measurements
• Added show toolbar button to navigation bar (shows when toolbar has been hidden)
• General improvements and corrections
The developer, Ramon Rivas, 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.
The developer indicated that this app supports the following accessibility features. Learn More
Information
- Seller
- Ramon Rivas
- Size
- 6.1 MB
- Category
- Productivity
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later.
- iPhone
- Languages
- English and Spanish
- Age Rating
4+
- 4+
- Copyright
- © Ramon Rivas 2026