Hi There,
I have read your post and come to know that you would like to get build an android application for QR code based attendance system. Backend and database are already developed in Codeignitor. We just need to create android application along with required API development. I have also checked the referenced links. As per that scope of work is almost clear.
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.
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