Signull Labs raises north of $3.58 million for Skye, an AI-powered iPhone homescreen app still in private testing

Signull Labs, founded by Nirav Savjani (who posts as signüll on X), raised north of $3.58 million in pre-seed funding in a round that closed in September 2025, with a post-money valuation of $19.5 million. Early backers include a16z (Andreesen Horowitz), True Ventures, and SV Angel.

Skye is an iPhone app designed as an 'agentic homescreen' using iOS widgets to display personalized information—weather, health data, meeting prep, email draft replies, bank charge alerts, and location-specific recommendations about local businesses and attractions—pulling data through user-authorized connections.

Since announcing Skye on X, the startup claims to have added 'tens of thousands' of users to its waitlist. The app is still in private testing and plans to launch to the waitlist soon, though no specific launch date has been given.