ANDROID app edits add video chat twillio to app already made

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ANDROID app edits add video chat twillio to app already made
Hi I need a few things done as my developer is not available. I need some edits and additions to my app. I want to add video with twillio for one on one video chatting then messaging, and I want to change my stripe information such as the cost of app etc. Also I need to add an appointment scheduler will show examples in interview, that a user of app can make appointment to do the video chat.
Add video and user to send message to app and make appointment to schedule video chat (I can show example API), change stripe to different amount and so I can add Amazon & google play store, add appointment scheduler for video chat, make some edits to admin and my budget is $250 Please give me your fees if it is different budget from what I want to pay.
And your deadline with your bid.
Please dont apply or interview if you cant do the task- thanks, to not waste our time.
Please contact me if you have experience, are confident in doing these steps and available to do the job. Language is java and on .NET backend AWS -Amazon web services stripe.
Show your previous work with twillio if possible and links.
Android experience is a must. Thank-you.
Skills:
Android
, Mobile App Development
, JavaScript
, Twilio
, Aws Lambda

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