ASiddur is an application capable of showing the appropriate tefillah for a given time and place.
It is currently usable as a siddur (no intelligence yet) on many devices. Note that full capabilities are not planned until version 1.0
Athan Mobile (Prayer Times and Qibla) is a free software for mobile phones, which lets you know your daily prayer times.
You can just enter either a city name, a region name or even a country, and it will find the GPS coordinates which the prayer times calculation are made from
Athan Mobile - Prayer Times and Qibla - It supports following features : Qibla direction, Sound alarms, Customized calculation methods, GPS detection, City lookup in a million-cities large database, and more... See official website : http://athan-mobile.appspot
Auqat e Salat - A useful application whereby you can get the following facilities: 1. An easy way to find out the prayer (Salat) timings of your city. 2. Now your mobile phone serves as a compass. Find out the accurate direction of Qiblah by this compass and offer salat in the correct direction. 3. An easy way of seeing Islamic date by lunar calendar
Auqat e Salat iPhone - A useful software whereby you can get the following facilities..... 1) Salah Timings: An easy way to find out the Salah timings of your city. 2) Compass: Now your mobile phone serves as a compass. Find out the accurate direction of Qiblah by this compass and offer Salah in the correct direction