I used dexie js from dexie.org to persist indexedDB, vendoring the script in a sidecar js file or inlining it - good for your iOS persistent local db, android too.
I used dexie js from dexie.org to persist indexedDB, vendoring the script in a sidecar js file or inlining it - good for your iOS persistent local db, android too.
I could also recommend SQLite with OPFS, if you’re comfortable with adding a web worker. I personally find it a lot easier to reason about than IndexedDB (even with a wrapper, it’s still a bit tricky to work with, and you get the power of SQL with SQLite).