UPDATE: Damm it this site has been down for a couple of days so I am going to have to find another good phone and ipad emulator 
as soon as I do I will be updating this post .
I am loving the http://transmog.net/ emulator tool.
Why? You ask?
- Let me list the reasons for my love
- It actually renders mobile webpages more accurately than any other web-based simulator.
- It simulates a touchscreen interface and sends requests with your chosen user agent eg iphone 4, iphone 5, samsung galaxy etc- ok it doesn’t have the latest devices you web devs probably do and its actually old devices you need to test in.
- Its quick without a ton of advertising and closest scams- I know everyone has to make money but some sites just take it way too far.
- Its free and you don’t need an account. Sometime I just need a really quick testing option
When I was testing the visual rendering of my example responsive tweed removals website it was a life saver.