This comes in a number of different flavours, depending on what you want out of the programme.

Please note that if you are using the services of a third-party freelancer, or development company to produce your application. For the most part, that company will generally use their own programme to develop your app, and provide preview versions to your devices. However, if once in the AppStore  you want your app to seem as if it was produced by you, and therefore list you as the author within iTunes and the AppStore –  then you must purchase an license from Apple in your company name, otherwise the app’s author field will be as your developer chooses (in some case’s this is not important and not worth the 99$ that it’ll cost you to register yourselves, however in others cases, it may look bad that your app is produced by WeMakeCheapApps Ltd).

Any good iOS development team will help walk you through this registration process and provide support when required.

The different programme types are summarised below.

Free

This allows you to download the development tools required to produce iOS applications. It gives you XCode, and full access to everything you may need including the iPhone Simulator to test you apps. However, using this programme, you cannot put your applications onto a device, nor can you publish your apps to the AppStore.

Standard

The standard licence is what you’ll likely want. It allows your company to buy entrance to the programme, and then allocate as many developer certificates as you wish to your team. It allows the normal AppStore route of development, so you submit your application to Apple, they approve, then it gets sold on the AppStore.

There are two slight flavours of the Standard Programme – Individual and Company. I’d recommend in 99% of cases that you choose a company. Individual gives you one developer certificate, you cannot make any more – your Apps Author field will be listed as your full name. A company programme allows you to create any number of development certificates, as your team grows, and gives you the ability to select the Author field for your apps (although this is a one-shot deal, you choose your author name, and there’s no going back). I’ve heard people have a hard time converting from a individual license, to a company, so I’d try to avoid this unnecessary step if possible.
Cost : $99

Enterprise

Enterprise access is only required for if you’re writing apps for you in-house team. So if you were writing an app for your entire sales team to run, you write it, buy an Enterprise license, then you can push it to all your iOS devices within your own company. You cannot use this as a way to get around the AppStore, it’s purely for internal applications. One of Apple’s requirements is that you have a minimum of 500 employees to qualify.
Cost : $299

A few things I’ve picked up in my time in theme innards.

<?php if (is_user_logged_in()): ?>
For these times when you need to know if the user is logged in or not.
<?php if ( have_comments() ) : ?>
Check if the current post has comments.
<?php if ( comments_open() ) : ?>
Are the comments open for the current post.

http://www.siliconrepublic.com/new-media/item/17425

There are a whole host of web app’s out there dedicated to helping this process, the following are tools that I use on a regular basis.

Basecamp
Most freelancers and contractors are aware of Basecamp. Basecamp is a fluid project management tool, allowing a collaborative workspace to store messages, todo’s, and milestone dates, online -and in a single place.

Harvest
Harvest is a time tracking tool, encompassing estimates, time-tracking, invoices and expenses. As a freelancer, new clients are often hesitant about how time, offsite are tracked and ultimately paid – Harvest’s reporting system, and detailed invoices make this an easier transition.

Beanstalk
Source-control can be overlooked, especially for the solo developer. Being able to have an off-site, version tracked, well commented, and private version of the source code at all times is invaluable.

To check out – Codebase
I haven’t tried Codebase yet, but have heard good things about it from various people. It includes time-tracking, project milestones, source control, ticketing, wiki’s, etc. Pricing seems very reasonable, and on the whole it looks pretty cool.

Used and recommend anything else? Leave a comment below.