Looking for a tracking app with special requirements

[emax9]

I am looking for an app with following features
1) It could save selective off-line maps just like google maps option.
2) When the app is started it searches through last 1 hour messages (SMS) and look for a specific text from a particular number which contains the GPS coordinates.
3) The app displays the latest coordinate on the off-line map received within last 1 hour.
4) The time of the window (1 hour in the above steps) should be adjustable.

If such an app is already available please provide link, else guide how that can be done.

 

[Rukbat]

I doubt that such a specific app exists

How it can be done is that you learn computer programming. Then you lean Java. Then you learn the Android environment. Then you write the app.

If you want step by step instructions - it'll take you 6 months just to learn the basics of programming, and if I made a post that long, they'd block me from the site. Start with Algorithms and Data Structures.