Bump
iPhone has some funny rules about bluetooth, but this app lets you send contacts, photos, and files between iPhone & Android. The only downside is that you both have to have the App.
Dropbox
Dropbox is a free online storage service that mirrors a shared folder across devices. If you drop a file in your dropbox folder on your laptop, you can get it on your Android or iPhone. It allows you to share files between Windows, Mac, iPhone, iPod and Android devices. All at the same time!
Barcode Reader
Any Barcode App will do but get one now. QR codes are being used by many retailers & brands (inc Appolicious) to give you quick access to mobile content. Their compatible with Android, Blackberry and iPhones so everyone can get involved.
Download
Hootsuite: Schedule Posts for Twitter, Instagram & More
I’ve chosen this one because Twitter is a great way to share links, facts and photos. Everyone with internet access can join in. Even ‘dump-phone’ users.
Evernote – capture notes and sync across all devices. Stay organized.
I’m an Evernote evangelist because it’s a brilliant little tool. You can save anything inc. files, photos, notes, links, snapshots, to your notebook. Automatic syncing means that notebook is available on any device with Evernote installed including Windows, Mac, Android, iPhone, or iPad.
I saved all my travelling info onto it, took snapshots of passports and visas. I had it all to hand (on my HTC) through Singapore & Australia, and could sleep easy knowing that if I misplaced anything I could log on to the Evernote website and get instant access to all my info.