Mahalo.com is a good web directory and Internet-based knowledge exchange (question and answer site).Mohalo started as a search engine and then they experimented and turned into some sort of a Q&A site and now Mahalo is focused on creating mobile apps for the iPhone, iPad and Android.
Initially the Apps by Mahalo were costing around about 4-5$ But they are now available on Google play and itunes for free recently .You can download mahalo apps for free and get all the benifits of the app on your Android , Iphone or an Ipad .
|Mahalo Apps For Iphone|
Install Mahalo for Android
Install Mahalo for Iphone
Install Mahalo for Ipad