Polymorph

About

Polymorph is personalization infra that lets developers use AI to personalize their apps, improving conversion, LTV, and CAC for consumer and self-serve apps. This infra is used to personalize user experiences and notifications, which takes whole orgs years to build at companies like Facebook, TikTok, and Google. They already support over 3.5M users across our customers, with some seeing 3.6x increases in conversion rates after using Polymorph. Users are unique and special, make them feel like it~ The team has extensive experience in the space, having been in senior engineering leadership at Meta Ads, building out large-scale ML infrastructure at Scale AI, and iterating quickly and securely at startups like Gusto, Opal, and Nira.

Founders

• 
  Andrew Sy· Founder

  Building Polymorph previously built Scale AI's ML inference infra (10mil+ calls/day), ex-Meta, Opal

  LinkedIn ↗

Product launches · 1 launch

• Polymorph: Personalize your experience for each user ↗▲ 22Feb 27, 2026

  AI-native growth platform for consumer and self-serve companies

Change history · none recorded