Undertow: Newsletter Deck

Turn newsletters you choose into a short, sourced reading deck. Try the bundled sample offline—no account or Gmail connection needed. Read one card at a time. Keep, Skip, Undo, or tap Read deeper for a fuller summary and source details. A CALMER WAY TO READ Undertow turns approved newsletter issues into concise, AI-assisted cards. Each card keeps its source details and opens the original issue when a link is available. Keep and Skip shape later decks. When material supports it, cards can connect ideas across your approved sources. YOUR INBOX, YOUR CHOICE Sign in with Apple identifies your Undertow account; it doesn't connect Gmail or Apple Mail. Connect Gmail separately on your iPhone with a revocable Google app password. The app checks likely newsletter headers on device. You review and approve publications before issue text is sent to Undertow. Attachments aren't relayed. New local connections keep your Gmail address in iPhone preferences and the app password in Keychain; neither is sent to Undertow by that flow. Older server-connected accounts may still have an address and encrypted app password on Undertow. Enabling local relay or disconnecting clears the server-held password; the address may remain until account deletion. Gmail access is read-only in the app: it can't send, reply, delete, move, label, archive, or mark messages as read. SUBSCRIPTIONS The bundled sample deck is free. Personal decks may require a monthly or annual auto-renewing subscription. The purchase screen shows the current price in your local currency, billing period, and any introductory offer available to your account before you confirm. Payment is charged to your Apple Account at confirmation of purchase or after an eligible free trial. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the current period ends. Your account is charged for renewal within 24 hours before the period ends. Manage your subscription in Settings > your name > Subscriptions. Any unused portion of a free trial is forfeited when you purchase a subscription. Undertow uses Anthropic to generate AI-assisted cards from approved newsletter text. Summaries can make mistakes; check the original issue for important details. Terms of use: https://undertow.flapp.ist/terms Privacy policy: https://undertow.flapp.ist/privacy