This app was mentioned in 8 comments, with an average of 1.63 upvotes
Additionally if you are using a homebrew class you can use this app to create it and import it into the above app. That's how I set mine up.
https://play.google.com/store/apps/details?id=com.wgkammerer.fiftheditioncustombuilder
The app's developer moved the custom functionality to a separate app to keep it clean. You can make custom content using that.
Not a good way but there is an app Fifth Edition Custom Builder can make custom everything Fifth Edition Custom Builder - https://play.google.com/store/apps/details?id=com.wgkammerer.fiftheditioncustombuilder
OP is specifically referencing an app that you can import and export custom data from, not asking for other ways of doing so. The app is: https://play.google.com/store/apps/details?id=com.wgkammerer.fiftheditioncustombuilder
To be used in conjunction with: https://play.google.com/store/apps/details?id=com.wgkammerer.testgui.basiccharactersheet.app
Creator: /u/droiddruid
The app is fantastic, have used it for a long time. Paid for the premium version and had no regrets.
Sorry if there's a better way to link to apps.
[REQUEST] Fifth Edition Custom Builder
Mod needed: Premium content unlocked, Ad free.
Link to the app: https://m.apkpure.com/fifth-edition-custom-builder/com.wgkammerer.fiftheditioncustombuilder
PlayStore Link: https://play.google.com/store/apps/details?id=com.wgkammerer.fiftheditioncustombuilder
It's not a very popular app, but I want to use it on my PC with APK welder and you can't do in app purchases on there.
I'm not sure if I'm allowed to do this but there's $5 for someone if they do it.
This: https://play.google.com/store/apps/details?id=com.wgkammerer.fiftheditioncustombuilder
Bonus: Use this to create a printable sheet or PDF https://oganm.com/shiny/printSheetApp/
Sorry for the late response https://play.google.com/store/apps/details?id=com.wgkammerer.fiftheditioncustombuilder
The race is already done, I don't need help to create it. I only need instructions how to create a json file for it using the app 5th ed custom builder.
https://play.google.com/store/apps/details?id=com.wgkammerer.fiftheditioncustombuilder