Need a Android app that uses chatgpt AI model

We need a AI based android App. App name will be “Askbro”

reference apps from play store are as below:

https://play.google.com/store/apps/details?id=io.forestsoft.secretarychat

https://play.google.com/store/apps/details?id=com.codeway.chatapp

1: Not all features in above required. but need below.
2: Questions can be asked via text or voice
3: welcome screen - as in “Ask AI chatbot”. with privacy policy & terms of use links.
4: My history page
5: chat page

4: Settings page contains below:
About Askbro
share app
contact us
privacy policy
terms of use
change language option to change the language.
subscription details
credits available ( if not subscribed) - by default 5 credits are free for everyone.
subscribe button with options ( 3 months Rs xx, for 6 months Rs xx & for 1 year Rs xx)
payment will be via UPI ( phoneme/gpay) & net banking and any other methods.

5: Questions can be asked via text or voice
6: The answer should be displayed same as in chatgpt web version.
7: should use chatgpt 3.5 turbo
8: UI/UX to be designed.

Not sure about this : sign in /sign up. - Please advise the best practice.

We have a AWS light sail server, we can create a new ubuntu server & give you ssh access.
We need freelancer who can develop , host & maintain this app ( end to end ) , As we dont have any technical resource. Although I am a technical person can understand technical terms.

Please bid if you know how to develop a native android app & well versed in chatgpt.