Ptolemay

Ptolemay builds mobile and web applications from a base in Walnut, California. Projects run on cross-platform tooling such as Flutter and Python, with native iOS and Android work and UX and UI design as part of the offer. Each project uses a small group of senior engineers who work with AI coding tools.

The firm also takes on AI work. Services include ChatGPT integration, custom AI features inside apps, and a written AI plan that sets out scope, architecture, cost range and timeline before a build starts. It also supplies outstaffed engineers to client teams.

Its published case studies include a clinical AI assistant for oncology clinics that flags drug and genetic risks, and a social app for couples that uses machine learning to shape content. Other work covers a fashion shopping app for the French brand Sézane, a home fertility tracker, rental and delivery marketplaces, and ERP and warehouse systems for grocery and logistics firms. The firm names eCommerce, healthcare, fintech and retail as its main sectors.