Ask HN: Easiest Route to a Mobile App?

Ok so I am primarily a backend dev but doing some pro-bono work with a non-profit. They need a mobile app in the app stores. I could easily do a mobile web app with Django but it has to be a "real" app. So what is my best bet here? Ionic + Vue or React or Angular, React native, Cordova - or something I haven't even heard of? I have 20+ yrs in industry, primarily Java/Python. Can of course do js just don't love it. This is lunchtime and evening work so needs to be enjoyable but also get most results with least effort. All advice appreciated.