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Trash app - Coggle Diagram
Trash app
Impacts
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Users will have a significantly reduced impact on the environment (through decreased water footprint and increased amount of waste being recycled
Users can learn about the natural wildlife and become more involved in caring for the local environment
The trash sorting game will allow users to become very good at determining the difference between different coloured bins and which types of rubbish go into each (reduces time they have to spend looking it up)
Bin categorisation will allow users to have confidence that they are putting their rubbish in the correct bin and will make them feel like they are making an effort towards preserving the environment
Since the app is free it could potentially reduce sales for other paid apps that have similar functionality
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Users are likely to make changes in their household to improve their water consumption after knowing that it can save them money
Client problem
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Constraints
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Must be a mobile app for iOS devices -- option between iPhone and iPad, but iPhone would be more convenient because users can then use the app to determine which bin to put their rubbish in on the go (they can also play the recycling game on the go as it would be unlikely that someone would want to sit down and play it for a period of time)
Requirements
Purpose
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A recycling bin game that is based on the provided algorithm must be implemented -- must allocate points for correctly sorted trash and the user will receive feedback based on their performance
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UX and UI
Must have a responsive interface that meets the Consisten User Experience Standard (Module 1 and Module 2)
Must be clear, consistent and comply with accessibility guidlelines
Must feature a home screen, impacts/benefits screen, a trash sorting game, a container refund calculator screen, and a screen for reducing water consumption/bills
Legal
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Must comply with government mobile application design standards, the Australian Privacy Act (1988) and Australian accessibility standards
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Developer problem
User interface
Usability principles
CUE
Simple, plain language is used [accessibility, learnability]
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Text can be resized (using the accessibility function in iOS) without loss of content or functionality [accessibility, effectiveness]
Use actual text instead of images of text [effectiveness, accessibility]
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Pause button is provided (in timed elements such as the app's game) [utility, accessibility]
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Titles and headings are descriptive and create a meaningful hierarchy [learnability, utility]
Components and buttons that provide the same functionality are consistent [learnability, effectiveness, utility]
Clear and concise instructions/labels are provided when input is required from the user [effectiveness, learnability]
Must not contain advertising for individuals, firms or corporations [utility]
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The text font colour must have a contrast ratio with the background of at least 4.5 : 1 [accessibility, effectiveness]
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Homepage must include Queensland Government logo (at the top left corner of each screen) and the name of the app (underneath the QLD Government logo) [learnability]
Must provide an accessibility statement, a copyright statement, and a privacy statement [safety, accessibility]
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Features
Trash sorting game
Initially opens a game title screen with 'play' button, high score and next goal
At first, title screen background is dirty, polluted and has a lot of trash lying around -- as the user sorts more trash and reaches new goals, the title screen starts to become more clean and eventually the background is pristine and green with animals and sunshine (reward for player) -- badges also shown to indicate the number of goals that have been reached
Press play button
Countdown begins (1 minute) -- when countdown ends, the user's score will be shown and a button to go back to the main app will be displayed
Different trash items will fall into the screen one at a time; the different coloured bins will be shown in a line at the bottom
Tapping the correct bin will add 10 points to score and the game will move on to the next rubbish item, tapping an incorrect bin will show a cross and subtract the relevant number of points -- the item will remain on screen until the user selects the correct bin
Home
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Explanation of how recycling works and how it helps the environment (and also therefore why it's important)
Legal, privacy + accessibility disclaimers
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Bin categorisation
Categories (buttons) for each bin colour -- when clicked, opens a new screen with a list of all the materials
Search bar at top that allows user to search for a material or a key word and the relevant colour of bin/s will be highlighted on the screen
Coding environment
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Key algorithms
Trash sorting game
Calculation of points (+10 for correct bin, -5 for least correct bin, -1 for all other incorrect bin types)
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Determination of whether the user has reached a goal and if they have the next goal needs to be set (also need to determine the corresponding background images that are shown or removed)
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Calculation of the approximate amount of water and money the user can save if they make the selected changes in their home — multiply the amount of water/money saved through doing each action by the number of people in the household, and calculate the total sum of water/money saved together