Hi There,
Thanks for inviting me. I have read your post and come to know that you would like to build an application where the user can upload their contact or add individual contacts and send/schedule ringless voicemails and SMS messages. All the other mentioned detail are clear for me. I have a few queries which I would like to clear with you. So I want you to invite me for Personal Message Chat here in the same Platform to discuss more and tell something beyond this info which you might be looking for and that discussion will surely conclude us with a proper estimation.
We Believe In order to achieve your goal or Scope, We have a bunch of skillset like Native(Android & iOS), PHP(Including all Major Frameworks), Dotnet, Node JS, Angular JS, React JS, DB(MySQL, Realm, FirebaseDB, MongoDB, Oracle), Different third-party SDKs and APIs.
We are a team of highly experienced(>2 Years) People which covering the area of Designing, Development, Backend & APIs, and QA.
As Quality is the prior matter for all, we have standardized our pattern and flow to maintain this which can strongly touch your expectations.
I hope you at least see the capability in us through this proposal, rest will be handled by our team with committing to provide one world-class output.
Thanks
Pinal
TBI