pocket-change

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iOS App that helps users manage their personal expenses and log their day-to-day transactions.

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# Pocket Change
iOS App made from scratch that helps users visualize their personal expenses and log their day-to-day transactions

# Screenshots
![alt tag](http://i.imgur.com/AI1XpSu.jpg)
![alt tag](http://i.imgur.com/Um9GGPG.jpg)
![alt tag](http://i.imgur.com/XvlLNAy.png)
![alt tag](http://i.imgur.com/SpD5mU6.jpg)
![alt tag](http://i.imgur.com/MORRDR7.jpg)
![alt tag](http://i.imgur.com/WzapKJJ.png)
![alt tag](http://i.imgur.com/nUnKxzp.jpg)
![alt tag](http://i.imgur.com/xU8B3eQ.png)
![alt tag](http://i.imgur.com/1cCDaJq.png)

# Features
‣ View your entire, color-coded history log of how much, why, where, and when money was spent 
‣ Integrated the application with the Google Maps API to visualize where money was spent when the user travels 
‣ When a user taps on a transaction, the map animates and centers on the location of where the transaction happened 
‣ Create a budget with a name and starting balance 
‣ Spend or add money to any budget, adding to your history 
‣ Check your pie chart to see the net amount spent per budget; every time you view the pie chart it is drawn with 1 out of the 10 color schemes included in my design, offering visibility and clarity on up-to-date data 
‣ View your transaction history within a specified time interval (past week, month, or year) on a bar graph 
&nbsp;&nbsp;&nbsp;&nbsp;– A horizontal line details the average amount spent per day for the specified time interval 
&nbsp;&nbsp;&nbsp;&nbsp;– The user can customize each budget's bar graph with 11 different color schemes 
‣ Manage multiple budgets at once 
‣ Undoing an item in your history or deleting your entire history reverts your balance to its original value 
‣ Rename and delete budgets

# Design
‣ Implemented CoreData to store pertinent information unique to the individual budgets 
‣ Designed a class that efficiently populates the x and y axes of the bar graphs 
‣ Constructed a backend design that stores the location information of each transaction 
‣ Developed an efficient method for retrieving data by relying on the fast lookup of Swift dictionaries when dealing with transaction history 
‣ Constructed a dictionary that maps the current date to the total amount spent on that particular day 
‣ Buttons enable and disable dynamically based on the validity of input: 
&nbsp;&nbsp;&nbsp;&nbsp;– Balance must be between $0 and $1,000,000 
&nbsp;&nbsp;&nbsp;&nbsp;– Spend button only enables when your balance is enough based on current input 
&nbsp;&nbsp;&nbsp;&nbsp;– Renaming actions require the new name to be unique 
‣ History of transactions records the date of transaction along with a corresponding color: 
&nbsp;&nbsp;&nbsp;&nbsp;– Red for money spent 
&nbsp;&nbsp;&nbsp;&nbsp;– Green for money added 
&nbsp;&nbsp;&nbsp;&nbsp;– Deleting history essentially reverts the transaction and restores your balance 
‣ Creating names will add (a number) if the name already exists: 
&nbsp;&nbsp;&nbsp;&nbsp;– I.E. if "Mall" is already a budget name, naming new "Mall" budgets results in "Mall (1)", "Mall (2)", etc. 
‣ Number Formatter: 
&nbsp;&nbsp;&nbsp;&nbsp;– Used a regular expression to ensure that user inputs cannot exceed past 2 decimal places 
&nbsp;&nbsp;&nbsp;&nbsp;– Dollar amounts include comma separators and a $ sign in the front 
‣ Programmatically utilized alerts to record user input 
‣ List of budgets and each budget's history is displayed using a UITableview 
‣ Used IBOutlets to programmatically interact with user interface elements 
‣ Defined an IBAction function that corrects button-enabling every time the user types or deletes a character

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