Knock for Android

Introducing responsive missed calls.
The most frequent kind of calls are the calls with single intent/question. Knock fixes this with responsive missed calls, which shows a message in the incoming call screen and gives you quick response options.

This is how it works:
You send your friend a message ("Where are you?", "Is the movie plan on?", "Did Brazil win the game?")
He gets an (simulated) incoming call with the message overlaid on the screen.
Instead of answer/reject he will have options "Yes/No/Share location".
He can with one swipe respond to your question.

* Number and contact blocking coming soon

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We always look forward to hearing from you! If you have any feedback, questions, or concerns, please email us at:
[email protected]
or follow us on twitter: https://twitter.com/TheKnockApp
@Theknockapp
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When roaming, additional carrier data charges may apply. Please contact your carrier for details.
Read more at http://bit.ly/knockhelp

Permissions:
CALL_PHONE, ACCESS_COARSE_LOCATION, ACCESS_FINE_LOCATION - To call or send location as a response to an incoming knock
RECEIVE_SMS, SEND_SMS, READ_SMS - To verify your phone number
ACCESS_NETWORK_STATE, INTERNET  - To check for internet connectivity
GET_ACCOUNTS, MANAGE_ACCOUNTS - To help fill the account profile
WAKE_LOCK, VIBRATE  - To show an incoming knock
WRITE_EXTERNAL_STORAGE - To store profile image
READ_PHONE_STATE - To show busy status if the receiver is on a phone call
AUTHENTICATE_ACCOUNTS -  To add a knock account to your accounts list in settings
READ_CONTACTS, WRITE_SYNC_SETTINGS, READ_SYNC_SETTINGS, WRITE_CONTACTS - To sync contacts to find friends
GET_TASKS  - To know whether application is open or not, and accordingly show the appropriate notifications
RECEIVE_BOOT_COMPLETED - To start Knock services