Eighth Wonder Finance

Table of Contents

• Overview
• Product Spec
• Video Walkthrough
• Wireframes
• Schema

Overview

Description

An application where users can simulate trading stocks with a starting balance of fake money. Users can research companies to find out more information as well as the current share price, review their holdings, and buy/sell shares of stock. Users can change settings, such as dark mode, and reset their hypothetical balance to the starting amount.

App Evaluation

• Category: Finance / Gaming
• Mobile: This app will be developed primarily for mobile devices. Future consideration may be given to a desktop version.
• Story: Stock trading game where users can simulate trading stocks with a starting balance of fake money. Users can research stock prices, see the current balance of their holdings, and view their user profile.
• Market: Any individual interested in stock trading could download this app and play the game.
• Habit: The app could be used as often as the user wants depending on their appetite for trading stocks and checking in on their balance (i.e. gains and losses).
• Scope: Our first objective is to allow users to research stock prices using the ticker symbol for a publicly traded company. This could evolve into a stock trading game with users competing in seasonal tournaments for prizes, similar to fantasy football apps. Large potential for use with brokerage accounts, electronic trading platforms, or social media platforms.

Product Spec

1. User Stories

User Stories

• User can see current price of stocks as well as a logo of the company
• User can research stock information by ticker symbol or company name
• User can purchase shares of stock using a hypothetical balance of cash
• User can sell shares of stock, and balance will reflect realized gains and losses
• User can view the current balance of their portfolio

Quality of Life Stories

• Ability to search for stock information using auto-complete based on ticker symbol or company name
• User can toggle light and dark mode

2. Screen Archetypes

• Login Screen
  • User must log in to use the application
  • User can sign up for an account
• Home Screen
  • User can view the current balance of their portfolio
  • User can select a stock to segue to the trade view
• Search Screen
  • User can research stock information by ticker symbol or company name
  • User can add an investment to their watchlist
  • User can select a stock to get more information
  • User can click the Trade button to segue to the trade view
• Explore Screen
  • User can explore a list of companies, either from their watchlist, or from a list based on different metrics
  • User can toggle different metrics such as biggest daily gainers or losers, and see stocks for that metric
  • User can select a company to view more information as well as purchase/sell shares
• Trade View
  • User can see a logo of the company, the current price of the stock, and the number of shares they own
  • User can buy/sell shares of stock and view their balance
• User Profile/Settings Screen
  • User can reset the game
  • User can toggle dark mode
  • User can logout

3. Navigation

Tab Navigation (Tab to Screen)

• Home tab
• Search tab
• Explore tab
• Profile/Settings tab

Flow Navigation (Screen to Screen)

• Login -> Home
• Home -> User can see their holdings and current balances
• Search -> User can search for and segue to the Trade view to buy or sell shares of a stock
• Explore - > User can view stock information for several companies and select one to segue to the Trade view
• Profile - > User can log-out, toggle dark mode, or reset the game

Video Walkthrough

Here's a walkthrough of implemented user stories:

Wireframes (Figma)

Digital Wireframes & Mockups

Interactive Prototype

Schema

Models

User

StockSnapshot

Trade

Networking

• Home View
  • (Read/GET) Query all StockSnapshots where user is currentUser

    let query = PFQuery(className:"StockSnapshot")
    query.whereKey("user", equalTo: currentUser)
    query.order(byDescending: "symbol")
    query.findObjectsInBackground { (stocks: [PFObject]?, error: Error?) in
       if let error = error { 
          print(error.localizedDescription)
       } else if let stocks = stocks {
          print("Successfully retrieved \(stocks.count) stock snapshots for \(currentUser).")
       // TODO: Calculate each symbols stock quantity and total cost to purchase
       }
    }

  • (Read/GET) Query API for each symbol's current price and calculate users current value held
• Sell View
  • (Create/POST) Create a trade (or trades) of stock snapshots
  • (Read/GET) Get stock logo from API
  • (Update/PUT) Update StockSnapshot quantities
  • (Update/PUT) Remove from User.holdings is StockSnapshot.quantity is zero
• Buy View
  • (Create/POST) Create a StockSnapshot
  • (Read/GET) Get stock logo from API
  • (Create/POST) Create a Trade
  • (Update/PUT) Add StockSnapshot and Trade to user
• Research View
  • (Read/GET) Top stocks from API
  • (Read/GET) Get logos for top stocks in API
  • (Read/GET) Stock searched for in API (to see if it exists)
• Research Detail View
  • (Read/GET) Stock information from API
• Profile View
  • (Read/GET) Query user information

    let query = PFQuery(className:"User")
    query.whereKey("objectId", equalTo: currentUser)
    query.includeKeys(["trades", "trades.stock"])
    query.order(byDescending: "createdAt")
    query.findObjectsInBackground { (stocks: [PFObject]?, error: Error?) in
       if let error = error { 
          print(error.localizedDescription)
       } else if let trades = trades {
          print("Successfully retrieved \(trades.count) stock snapshots for \(currentUser).")
       // TODO: Display trades made by user
       }
    }

IEX Cloud API

• Base URL - https://cloud.iexapis.com/stable

  HTTP Verb	Endpoint	Description	Credits
  GET	/stock/{symbol}/quote	current price, name and stock info	1
  GET	/stock/{symbol}/company	company description paragraph and info	10
  GET	/stock/market/list/{list-type}	list of 10 quotes based on list-type (mostactive, gainers, losers)	~10
  GET	/stock/{symbol}/logo	logo for symbol	1