Making an iPhone Apps that carry out all the customer potential and in the due time, many companies speculate about it. Approximately the development hours and calculating the resources that would be used in that project, it's a tough job and most company's work on the rough educated guess estimates.

Practicality of applications defers and the time required for their Planning- Designing- Developing and launching also differs on a large scale. Slowly and steadily iPhone has now become the most popular device in the market all over the world, and as the customer size is increasing, iPhone Developers are influenced to design more and more custom applications.

Typically there is a set timeline for the development process of the iPhone applications
* Planning & Architecture
* Design phase
* Development phase   
* Testing
* Deployment phase

Complete development cycle is centered on how well Planning is done and on how well the implementation is done on that.

Apple is well known for their product approach i.e., first they launch their products and then create the need for it. It give you a room to develop applications that can be customized easily to each individual needs catering specially and specifically according to their desire.

iPhone App Development currently cover four major verticals and there most popular Apps that are leading in market are:

Business Apps
Search Engine on your iPhone
Accessibility to various Business reports, surveys, trends
Email textual content to you mobile
Money Management Tools
Customer Detailed Database
Calendar Services
Windows Office Services

Games Apps
Brick games
Puzzles
Quizzes
Strategy games
Board games
War games
Multi/single players

Entertainment Apps
Radio Stations
Movie Feedbacks
Music
Information about local events
Cartoon Characters
Fun and Interactive Applications

Social Networking Apps
Locating friends
Wi-Fi networking
Social networking games
Weather tips
Subscribing to events
Horoscope
Maps