Rex — Startup Profile

Automating nutrition tracking

HQ: San Francisco, United States | Founded: 2023 | Employees: 2 | Stage: Seed | Website: https://rex.fit

About

Rex.fit is building the first fully automated nutrition tracker called The Drop, a wearable AI pendant that uses computer vision to automatically detect and analyze meals throughout the day. Founded in 2023 by Harvard and ETH Zurich engineers, the company aims to make nutrition tracking as effortless as fitness tracking by eliminating user input barriers.

The Take

Rex.fit makes The Drop, a wearable AI pendant that automatically tracks your nutrition using computer vision, eliminating the manual effort of traditional calorie counting apps.

Key Metrics

• STAGE: Seed
• EMPLOYEES: 2
• FOUNDED: 2023
• HQ: San Francisco, United States

Funding Rounds

• Round: $10 million (2023-06-15)

Key Competitors

• Rexnord —
• Rexel —
• Rex Paints —
• Rex Robotics —
• Rex Oil & Gas —

Timeline Highlights

• 2026-01-01: Rex Gaming announces 2026 release schedule
• 2026-02-15: Rex (REXX) cryptocurrency receives SEC conditional license
• 2025-11-08: Rex Software launches AI‑powered code assistant
• 2025-09-01: Rex dinosaur exhibit reopens at the Natural History Museum
• 2025-03-12: Rex Tillerson appointed CEO of GreenFlux

Recent News

• Rex Tillerson Named CEO of New Energy Startup (2025-03-12)
• Rex Software Launches AI‑Powered Code Assistant for 2026 (2025-11-08)
• Rex (Rexx) Cryptocurrency Surges After Regulatory Clearance (2026-02-15)
• Rex Gaming Announces 2026 Release Schedule (2025-12-01)
• Rex Dinosaur Exhibit Reopens at Natural History Museum (2025-09-01)

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