YouKon is a multiplatform mobile app used for unit conversions and projects for scientists and engineers. It allows you to group several related parameters, and convert each to a consistent unit system, regardless of the what each system each was originally defined for. Examples where this may be useful:
- Mass properties and dimensions of an aerospace vehicle
- Density, elastic, and strength properties of a material
- Measurement quantities for a recipe
- ... and many more
YouKon is now available for beta testing at the following links:
- iOS: https://testflight.apple.com/join/aKAd0AwD
- Android: https://play.google.com/apps/testing/com.dcengineer.youkon
The main application view includes the logo and header, a quick conversion card, and the projects card Quick conversion includes a text field for entering numeric values, and dropdowns for selecting "from" and "to" units.
| Quick Convert Card |
|---|
 |
Each user has a projects card, where any single project represents a grouping of measurement data that hold a common purpose. The projects in the card are laid out as tiles, which can be tapped to expand and show the enclosed measurements.
| Projects Card |
|---|
 |
With a project file expanded, the user may then modify the measurements of that particular project. Unlike the quick converter, the individual measurements in a project do not have a "to" unit selector, rather the entire project will have a selector for a consistent unit set (i.e. Imperial or SI), and all measurements will get converted to this unit set.
| Editable Project |
|---|
 |
Kotlin Multiplatform Mobile is used to provide a set of shared data models.
Many of these are given the prefix Yk to identify that they are part of the YouKon project, and for deconfliction with built-in types.
The lowest level object is a YkMeasurement, which stores the numeric value and its unit, along with methods for conversion.
A YkProject is a collection of YkMeasurements, and may include images.
A saved set of Project objects that an individual user has generated is stored in the YkUser object.
classDiagram
YkUser --> YkProject
YkProject --> YkMeasurement
YkMeasurement --> YkUnit
class YkUser {
+String name
+List~YkProject~ projects
+addProject()
+removeProject()
}
class YkProject {
+String name
+String about
+List~YkMeasurement~ measurements
+List~String~ images
+addMeasurement()
+removeMeasurement()
}
class YkMeasurement {
+String name
+String about
+Double value
+YkUnit unit
+String valueString
+convertTo(targetUnit)
+convertToSystem(system)
+valueAndConversion(targetUnit)
+nameAndValueInSystem(system)
}
class YkUnit {
+Array~YkUnit~ allUnits
+String shortUnit()
+Array<YkUnit> equivalentUnits()
+Double conversionFactor(targetUnit)
}