Habit Keeper is a nifty little application that helps you track and manage your habits.
It's easy and simple to use, and a great help for tracking how well you're keeping up with your good habits.
If you set a habit to be number value type it has negative number and decimal fraction into daily record. Threre are many useful situations using the feature like jogging distance, exam mark, weight, and so on.
Flexible repeat types are useful for don't forget repeat task like writing daily report and going to shopping for groceries.

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This free version is different from paid version
- Includes advertisement
- Max number of habits you can have is three
- Some options are not available such as app badge, passcode lock, import exported data

If you want to paid version then search "Habit Keeper" in AppStore
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HABIT SETTINGS

- Record multiple habits
- Number and check type settings for each habit
- Units name
- Set which week days, every X days, or specific date in month to be checked
- Reset daily record of each habit

TACKING

- When entering numerical values, you can enter numbers through a numeric keypad (appearing on the screen)
- Fractions and negative numbers
- Calendar display (Horizontal swipe to change other month / Vertical swipe to change other habit)
- Total amount for what you've checked in the calendar
- Appear check mark animation when tap daily habit

STATISTICS

- Checkbox-type records are displayed as bar graphs, numerical values are displayed as line graphs
- Total amount
- Touch and hold to show detail label in line chart

APP SETTINGS
- Three checkmark image type (checkmark / cross / circle)

DATA BACKUP
- Export data to email attachment

OTHER
- Sound Effects 
- 4-inch iPhone 5 displays
- Retina displays
- Reset all application data

URL scheme is available
habitkeeperfree://

Demo Video on Youtube
http://youtu.be/F0V6_dyrqxk