I thought about building this too! Love that both of you are pursuing it as I haven't had the time to start. Don't give up.

Yay! Registrations to https://merrilin.ai are open and you can enjoy a free account for as long as I can afford to give it (I have no funding lol). The android app is ready for closed testing too, if you have an Android device, mail me at mail [at] stonecharioteer.com and I'll add you to the beta testing. ios is still a pain.