Can confirm: don’t use IndexedDb in a mobile app made with Capacitor or Cordova. I never had the IndexedDB wiped by the OS, but there are occasional browser bugs that affect IndexedDb.

One time, users could not load their data if their android device had less than 1 GB of free disk space, because Chrome had a bug in calculation the quota for IndexedDb.

SQLite is fast and it gives me peace at night, knowing that user data is safe.