Free distance formula software for pda

How Lightning Distance Calculator works:
Click the Navigation button when you see the lightning, then click it again when you hear the thunder.
The calculator provides time interval between the lightning and the thunder and the distance to the lightning.
Main features:
- The intuitive interface.
- Oversized numbers for easy data entry.
- This software can be used as a timer.

DateCalc computes the distance (in seconds, minutes, days, weeks, months and years) from selected time till now.

This is our initial effort to provide the useful marine based calculations. This calculator includes the following :
1) Apparent Altitude Correction
2) Cubits Ark Size Convertor
3) Volume Convertor
4) Mapping Scale
5) Distance Calculation (based on latitude/Longitude co-ordinates)
6) Barometer Correction (Gravity)
7) Barometer Correction (Above Sea Level)
8) Barometer Correction (Temperature)

This application is a simple ballistic calculator.
By inputting a range of variables such as bullet mass, muzzle velocity and distance Ballistic works out the following parameters:
- The required elevation on sights
- The wind allowance
- The velocity at the given distance
- The muzzle energy
- The bullet drop
The results can be solved for a single distance or a table of the results can be output.
This software is free and may copied and distributed.
It should be noted that the results for the calculations are only valid for supersonic bullet velocities i.e. greater than 1200ft/s.

Improved version of David Hauperts Gas Milage. Instead of entering how far you have driven since last fueling up, you enter the odometer and it calculates the distance. Uses liters, kilometers and Canadian dollars.
Each time I gas up, I create a new record and enter the odometer reading, number of liters, and price. I might change the default brand of gas, and type of driving (City, Hwy, mixed) from popup lists. The calculated fields show how far I drove, date, cost per liter, miles per US gallon, cost per kilometer, and the distance I could have driven on a whole tank.
System requirements:
- HanDBase v.2.7x or greater

Hyperfocal distance and depth of field calculator.Just three taps set focal length, f-number, and focus distance.Graphical display of the near and far focus distances makes it easy to see the depth of field.

Customize the circle of confusion and lenses for any format: digital, 35mm, medium format, and large format cameras.

Please see documentation in download file for more information.