A very simple air quality app as a side project

I also built the API to get the data from that source. So to add more countries I would need to get the data from others environmental agencies and populate my database. It is totally doable, fortunately the data from different agencies are often using the same notation standard. However the APIs are most of the time slightly different and it would take some time.

On the technical point of view, I am using Compose.io as my database is MongoDB and I already need to store 700,000 documents (10 moving days) which is not so much but takes some space anyway and cost me money every month ($36). So if I want to add more data and keep the app free I would need to change my database provider or even my database. I would love to do it, I am thinking of Postgres on AWS but I don't have the time right now.

I am using ionic for the app. I wanted to test this framework while doing a real app. For the back-end, the API is build with express on AWS and I store my data in mongoDB on Compose.io

So far, I can say that ionic was great to use. I did this project in May of last year even though I didn't push it in the App Store before October. In the meantime I did other App projects with react-native https://github.com/benoitvallon/react-native-nw-react-calcul... and I can say now that I would definitely go with react-native if I had to do it again.

About ionic, I had a few difficulties with performance at the beginning, the app wasn't really smooth but it turned out to be more the Mapbox map that I used as a background than ionic itself. And after rethinking a few parts of the app, the experience for the user was nice.