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Restaurants today rely on dozens of disconnected tools to manage ordering, loyalty, marketing, and operations. Per Diem replaces that fragmented software stack with AI agents that build and maintain branded apps, run marketing campaigns, manage loyalty, automate operations, and help restaurants grow first-party sales. Built natively on Square, 800+ brands use Per Diem to power more than 500,000 monthly orders as their operating system for commerce, customer retention, and growth.
After building products at OpenTable and Resy, I co-founded Per Diem (YC W21) to bring Starbucks-level mobile apps to independent restaurants. We launch branded apps in hours and use AI to automate loyalty, marketing, and growth. Per Diem is now the top-rated loyalty app on Square, trusted by Oakberry, Chip City, and 500+ brands.
Hey, I’m Doron, co-founder and CTO of Per Diem. Per Diem is the AI OS for brick-and-mortar businesses, giving local operators CTO and CMO as a service through ordering, loyalty, marketing, etc... I love building products that move from idea to real usage, especially when they help small businesses operate better. Before Per Diem, I worked at Saildrone, OpenTable, Apple, Beats Music, Ubiquiti. I’m also a dad and traveler. Always happy to meet new people and help other YC founders where I can.
Founded 2020 · Source
Source-based assessment · automated evidence rules
The company website offers product access through a trial, free start, app download, purchase, or onboarding with existing-account login. Customer adoption is not established by this evidence.
Company website: home Checked 2026-09-16
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Maturity is an evidence-based assessment, not a success rating. It may understate the current stage where evidence is limited. Coverage records documented areas, not a complete or independently audited company history.
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