Developer needed to add new features to existing app

- I work to support pregnant women and already sell a successful digital product (a series of videos and supporting materials) through my website. I am looking to offer a complementary app for women leading up to, and during labour. - Main purpose of the app: Help pregnant women and their partners during the lead up to birth and during labour to keep relaxed and calm whilst counting their contractions in order to know when to go to hospital / call the midwife - This is a relatively straightforward app with two or three features that might require the app to be native - this will need to be discussed. If there is the option I'd like quotes for both. - Some key things to note for the app - it will involve playing MP3 tracks, it will have at least one moving background, it will have a timer for the user to activate that will enable statistics to be displayed in a user friendly way. - Multiple languages is preferred: Spanish, Catalan and English (not necessary for you to speak Spanish and Catalan, all language will be provided). - The app should be built to enable additional features in the future - Full design, content, concept to be provided to the developer - I am working closely with a designer and work on this is near completion - I would like work on the app to start around February. - I'm looking for someone who can work quickly and accurately to implement my design