Coinapult is a great free online wallet that you can use on your mobile devices but with no specific dedicated app. That said the wallet does allow a host of features such and methods to transfer your bitcoin as seen below. Probably one of the top apps for breaking into the emerging markets of the unbanked e.g. Africa.
- Send bitcoin transactions to a bitcoin address
- Send bitcoin via email
- Secure storage for your bitcoins
- Track your transactions history
- Easily customisable Invoices
- Merchant services