Call Recording App with Call Details Records Genrating Feature like Mubble

Total budget for this app is 300 USD. 25% of total budget will be released after giving me sample working apk. Please don't ask me any thing in advance or awarding you the project or creation of any milestone before showing your work. Budget will not be increased at any cost. If you want then you can copy existing apps available on playstore. I'll not provide you any source code. We are looking for an android application which will work for call details records storage in excel sheet. There should be feature where all recordings should be saved on user's cloud account but with the permission of the user. When ever user will like to download any of his/her cdr file into excel, there should be a link also of that particular recording. There should be a smart search feature in the app, where users could search any of their recordings by name, mobile number, between any dates, inner words or content which was exchanged between two parties at the time of their talks means if we are talking about any movie dialog on phone call and app is recording the talk then whenever we want to search that recording even if it is deleted from user dashboard then our smart engine will search it from admin database also. User should be able to download any recordings in one whole year with proper mobile number and date and time. There should be a dashboard in user account from where and whenever any user want to download their CDR (Call details records) they can download their CDR (which will be having all the features like call details summary, sms details, roaming usage, net usage and expense on that net provided by mobile operators) and send to their mail i.d which they can see on their mobile phones or on their pc also. This CDR will be in excel format which will be compatible to all versions of excel. This app will record all their incoming and outgoing calls, their msgs or other incoming or outgoing communication from their mobile. There will be a feature in the app to record all the incoming or outgoing calls, recording the sessions of data usage and msg sent or receiving count. Usage of their roaming minutes. This app will work like truecaller. It should show the identity, location telecom operator, location, prepaid or postpaid type of the callers and sms senders. Whenever any incoming or outgoing call or any sms will come or go on their android mobile, it will be stored in excel sheet in their dashboard available in our database and user can download it anytime. There should be GPS in the app. Admin should be having the facility to add or block or unblock any user account. There should be an option to invite users through social media platform. There should be an Otp authentication system in the App. Designing of banner and logo will be done at developer end only. At the end of the work or during the work, the whole source code will be our property.