Frame Math app for iPhone and iPad

Frame Math is a timecode calculator, which allows for adding, subtracting, multiplying, and dividing two values of time code. The requested calculation is output in both properly formatted time code, and the total number of frames. The app supports calculations for the following frame rates: 24, 25, 30, and 60. All calculations are performed in non-drop-frame timecode.

Instructions
- Enter values of time code in both Input A and Input B
- When entering time code, use decimals instead of colons or semi-colons
- Tap the + button to select the type of operation you wish to perform (addition, subtraction, multiplication, or division)
- Tap the = button to have the app perform the requested calculation
- The answer is automatically displayed in Timecode format
- Tap the Output - Timecode button to display the answer in Frames, tap the same button again to switch back to displaying output in Timecode
- To change the frame rate that is used for the calculation, tap the @24 frames per second button to select from frame rates of 24, 25, 30, and 60

Tips:
- Input values of hours, minutes, seconds, or frames cannot be greater than 99
- When dividing, Input B cannot be 0
- You may enter timecode values that are greater than their normal maximum unit value; for example, when entering 90.00 as an Input the app knows this is actually 1 hour and 30 minutes