I am Lucas. I am fairly new to coding and could use some help for a project. I want to build a calorie tracker app for my iPhone for personal use, but I’ve never built a smartphone app before and now have some difficulties deciding on the correct resources. Maybe some of you can help me out? 🙂

I want the app to:

Be able to run offline
Save my data
Have access to the camera of the iPhone (for an EAN/barcode scanner)
Use an EAN API

I have skills in HTML, CSS, JavaScript, PHP, and Laravel.

I did some research and heard about PWAs, which sound cool because I already know all the technology. Now, here is the point where I am struggling. I don’t have a web server and would like to make the app run on my phone without one. But I am not sure if this is possible with PWAs. Also, how can I achieve storing my data on my phone long-term, not just in the cache of my browser or something? I read about offline databases, but is this a good approach for me?

I would be super happy about some replies!

Have a great day,
Lucas