Gizlilik

Secure Call is an encrypted voice call app for iPhone and Android platform. Our goal is to make sure our users get highest possible privacy and security for today mobile technology. The protection of your communication and privacy is what we do best.

Secure Call does not access your personal data including but not limited;

  • Your phone number
  • Your phone's IMEI number
  • Your e-mail account
  • Your any membership including social accounts (Facebook, Twitter etc.) 
  • Contacts
  • Photos
  • Files
  • Location

Secure Call is only a voice call app and needs minimal app permissions to operate as a voice call app. To able to operate properly Secure Call needs:

  • Notifications: To able to receive calls.
  • Microphone: To able to capture your voice while calling.
  • Internet: To able to transmit your voice to other call participant.

Most communication apps need at least your phone number or your e-mail address to uniquely identify your account. But, this information could be used to reveal your true identity. We take privacy very seriously and we cannot do that. To able to achieve full anonymity, we had to think out of the box and implement some unique properties. As a result, instead of your real phone number or e-mail address, we generate a pseudo-phone number which we call it as "Secure Call Number". Every single Secure Call user has their own Secure Call number and it's not related to any of your personal information. Due to how Secure Call numbers generated, Secure Call numbers could be changed between re-installs depending on the platform.

To improve your privacy and security, we implemented another unique feature. Most communication apps operate on Client-Server model. In this model, a user who want to communicate someone had to send his communication data to one of the service's server. After that, the service transmits the communication data to other user. So, the service may backup, process or even share your communication data with other organizations even without you notice that. Secure Call implements peer-to-peer (P2P) communication model on top of end-to-end encryption. In this model, Secure Call servers only bring call participants together. After that, relevant participants can communicate directly without transmitting any voice data to our servers. But, under some restricted network conditions, peer-to-peer communication could not be achieved. At this conditions, Secure Call servers relay encrypted data from one participant to other participant. Since, Secure Call implements end-to-end encryption meaning that only participants know encryption keys, Secure Call servers can only access encrypted communication data which is impossible to decrypt. Because of how Internet works, Secure Call servers need to know your IP address during calls. Also, in order to perform P2P communication, both participant necessarily require at least the knowledge of their peer's IP address and the assigned UDP port. As a result, a certain amount of information exchange is necessary before Secure Call communication can be established. One adverse side-affect of exchanging those information is that a participant can learn other participant's IP address. As IP addresses are publicly registered with global authorities, they can reveal such details as a given participant's location. This could naturally have negative implications for a participant, which we would wish to avoid.

Accepting and processing payments may require us to collect very limited data which is reported by underlying mobile operation system. It's natural that transaction history is kept at Secure Call servers to able to operate properly.

Our engineers do their best to increase service quality of Secure Call. To able to improve Secure Call, we had to log some basic data about service operation. We want to hold the least amount of data as possible.

Although Secure Call cannot access any of your personal data due to minimal app permissions, we want to state that we will not sell or rent your personal information to anyone.