I can deliver an app in 10~15 days depending on the precise requirements.
Relevant Skills and Experience
I recently created a few apps using Angular/Ionic/Cordova with Couch/PouchDB. I am currently using Typescript, almost exclusively (on Node.js).
Proposed Milestones
$200 USD - Inital design and prototyping
$600 USD - Deliver a fully functional app.
$200 USD - Test and iteration.
Do you have full requirements, or design, or a mockup? What's the current stage of the project?