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Local-first is the right default for portfolio data. It is also a set of explicit tradeoffs.

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Per-device, per-browser

Your snapshots and wallets live in the browser storage of the current browser on the current device. They do not follow you to a second device. Opening Retina in Chrome on your laptop and Safari on your phone gives you 2 separate setups.

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Clearing site data deletes it

Browsers expose a “Clear site data” or “Clear browsing data” action. Running it for useretina.xyz deletes every snapshot, wallet, manual position, and the Diapleo key.
There is no Retina-side backup. If you clear site data without exporting, the data is gone. Export from the Positions page before clearing.

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No background snapshotting

When the tab is closed, no snapshots are created. Snapshots are always taken when you click + Snapshot with the tab open.

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No team-shared portfolios

A portfolio is bound to its browser. There is no shared workspace, no read-only link, no team view.

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Sync is on the roadmap

Multi-device sync via Arcium Multi-Party Computation is planned but not shipped. See Roadmap.