Y Combinator Summer 2018 (S18) Companies

Phiar develops augmented reality navigation software for smartphones and vehicle displays that uses edge-based artificial intelligence to interpret road conditions and provide real-time directional guidance to drivers.

3 investors

Pine Park Health operates a team-based primary care model that provides medical care, preventive screening, and health coordination services for patients. The clinical team includes board-certified nurse practitioners and physician associates who work with a medical director and care coordinators to deliver personalized care plans.

3 investors

Pocket Worlds operates a platform for creators and users with transaction capabilities, supporting millions of registered users and creators in a digital marketplace environment.

3 investors

Prodigal builds AI-powered applications for consumer finance servicing and collections, enabling lenders and collection agencies to automate workflows and personalize customer interactions. The company operates a unified platform called the Prodigal Intelligence Engine that powers multiple agentic applications including note-taking, payment processing, and quality assurance.

3 investors

Purple Plate operates shared kitchen facilities that handle food preparation and delivery logistics for restaurant partners, allowing them to expand their delivery operations without managing fulfillment in-house.

1 investor

Quickchat AI provides tools for designing, refining, and deploying AI agents that are secure, customizable, and brand-aligned. The platform targets conversation designers and enterprises seeking to build and control AI-driven conversational experiences.

2 investors

Quo is a cloud-based business communication platform that provides a modern phone system for small businesses to connect with customers and manage relationships. The product targets small business owners who need professional communication tools to scale operations and compete effectively.

6 investors

Radix Labs develops software systems that manage operations and workflows in biological research laboratories.

1 investor

Rain Neuromorphics manufactures AI processors using neuromorphic hardware—physical neural networks with spiking neurons and memristive nanowires—that consume significantly less power than conventional processors for machine learning applications.

2 investors

Rebellyous develops plant-based chicken nuggets and proprietary manufacturing systems designed to enable efficient, clean food production with improved working conditions. The company serves consumers seeking plant-based alternatives and operates in the alternative protein and food technology space.

8 investors

Regology provides software that automates the identification of regulations applicable to financial products and functions. The platform helps large financial institutions reduce the time and cost of implementing regulatory compliance programs.

4 investors

Rejuvenation develops proprietary mRNA and lipid nanoparticle technology to safely lengthen telomeres in human cells, targeting cellular aging and diseases caused by short telomeres including pulmonary fibrosis, liver disease, and bone marrow failure.

3 investors

RevenueCat provides revenue and subscription analytics infrastructure for mobile and web applications, helping teams centralize reporting and monetization tracking across platforms.

4 investors

1 investor

Scanwell Health develops smartphone applications that enable patients to perform diagnostic tests at home, starting with an FDA-cleared app for urinary tract infection testing and treatment. The platform targets people seeking faster diagnosis and treatment of acute and chronic conditions without visiting a clinic.

1 investor

Crisp is a vertical AI platform for retailers and CPG brands that integrates and structures retail data to automate supply chain operations, demand forecasting, and merchandising decisions. The company delivers autonomous AI agents that turn commerce data into actionable insights for inventory management, planograms, and ordering optimization.

4 investors

ShopWith operates a mobile shopping platform modeled after televised home shopping, targeting younger consumers through video-based product discovery and purchasing on smartphones.

1 investor

SkydropX provides shipping automation software for e-commerce and retail businesses in Mexico, handling label generation, tracking, delivery time estimation, and return management across the fulfillment process.

2 investors

Spate is a trend intelligence platform that analyzes consumer data to identify emerging trends and behavioral shifts for consumer brands in the beauty, wellness, and food and beverage industries. The platform delivers predictive insights to help brands make data-driven decisions about product innovation.

2 investors

Spero Foods manufactures plant-based dairy products using proprietary manufacturing processes, targeting consumers seeking sustainable and affordable alternatives to conventional dairy.

2 investors

2 investors

Tall Poppy provides digital safety tools and incident response services designed to protect individuals from online harassment and attacks.

2 investors

Tenderd provides AI-driven fleet and equipment management software for businesses to optimize operations and reduce environmental impact. The platform helps track and manage assets across industries.

6 investors

The Buttermilk Company sells meal kits with fresh ingredients and minimal processing that let customers prepare ethnic dishes at home in minutes; the company sources recipes from community members and returns a share of revenue to recipe contributors.

1 investor