Thanks for getting in touch.
1) The web app will be ready in October
2) The MobiCart iPhone platform is 100% free with unlimited products but for the web app, Android and iPad, you would need to upgrade to the MobiCart Starter plan priced at £15 per month or £150 per year.
3) Within MobiCart we will provide you with a URL which you will need to copy/paste into the head section of your website. Each time someone access your site from a mobile browser, the MobiCart web app would automatically come up:
http://www.mobi-cart.com/blog/features/ ... creenshots
4) You will be able to change the colours, logos etc but not the actual layout. You can get access to the source code for the native apps but not the web app as its a hosted SaaS application. You can however add extension using our API.