SpendingKeeper app for iPhone and iPad

The app helps a user keep the records of spendings.

Transactions
- Presents a list of transactions
- Click `+` to add a new transaction
- transaction details
- click `Copy` to create a duplicated transaction

Accounts
- Presents a list of accounts
- Click `+` to add a new account
- account details
- presents a list of recent transactions based on the statement day

Trends
- Choose `daily` or `monthly` to display charts for the spendings during the current and previous periods
- Click `cumulative` to diplay the cumulative spendings