Dan Greer is the founder of DeFi App and a product and user-experience specialist with experience spanning cryptocurrency, fintech, and software startups. His career includes leadership roles at Zapper, Shopify, and Signal, where he focused on product development and simplifying complex technologies for end users. ^[2]

Career

Greer co-founded Chillabit, a startup backed by Y Combinator, in 2016 and was involved in its product, growth, and operational development through 2017. He subsequently co-founded Signal in 2017, a cryptocurrency trading automation platform focused on algorithmic trading tools. Greer remained with the company until 2020, overseeing product strategy and business development prior to its acquisition. Following the acquisition, Greer joined Shopify as Lead UX, where he worked on financial services and merchant-focused products within the Shopify Money ecosystem between 2020 and 2021. His responsibilities included user experience strategy and the development of financial technology products designed for merchants using the Shopify platform.

In 2023, Greer joined Zapper as an early employee. During his tenure, he contributed to product development and user experience initiatives related to blockchain data visualization and on-chain transaction analysis tools, helping expand the platform's decentralized finance capabilities. Since 2024, Greer has served as founder of Defi App, where he leads product strategy and platform development. His work has focused on building a decentralized finance application that integrates trading, yield generation, and cross-chain functionality within a unified user interface. ^[1]

Interviews

Last Crypto App

In a June 2025 interview on the Decypher Podcast, Greer discussed the development of DeFi App as a platform focused on simplifying access to decentralized finance through a streamlined user experience. He explained that the project sought to reduce the complexity commonly associated with blockchain applications by incorporating features such as embedded wallets, cross-chain trading, and simplified interface design, making decentralized finance more accessible to a broader audience.

Greer highlighted the importance of community participation, partnerships, and product usability in the platform's growth strategy. He also outlined plans to expand beyond trading with features such as yield generation, lending, and additional infrastructure designed to connect users with a wider range of decentralized applications and services. The discussion emphasized the company's goal of creating a unified entry point for decentralized finance while maintaining a lean operating model and focusing on long-term product development. ^[3]

Fixing Crypto UX

In a March 2025 interview on The Block By Block Show, Greer discussed the challenges of user experience in cryptocurrency and argued that simplifying access to decentralized finance represented a major opportunity for innovation. He explained that DeFi App was designed to reduce technical complexity through interface design principles such as progressive disclosure, allowing users to interact with decentralized finance services without needing to understand every underlying process. The platform focused on improving accessibility for both experienced crypto users and newcomers by emphasizing transparency, simplified workflows, and clear transaction routing.

Greer described the platform's multi-chain approach, supporting activity across different blockchain ecosystems while planning additional integrations, including Bitcoin-related functionality, staking, and yield-generating services. He also outlined the company's goal of becoming a primary access point for decentralized finance by combining trading, asset management, and other financial tools within a single interface. The discussion highlighted the role of product design, user feedback, and ongoing feature expansion in shaping the platform's development. ^[5]

SuperApp for the Masses

In an April 2025 interview on the Hash Rate Podcast, Greer discussed the development of DeFi App, a platform designed to simplify access to decentralized finance through a unified interface for trading, asset management, and other on-chain activities. He explained that the platform integrates multiple blockchain networks and relies on existing interoperability and routing infrastructure to facilitate cross-chain transactions, while focusing on reducing complexity through streamlined user experience design, progressive disclosure of advanced features, and integrated educational tools.

Greer described the project's emphasis on self-custody, accessibility, and reducing barriers to participation in decentralized finance. The discussion covered support for activities such as token swaps, staking, lending, borrowing, and leveraged trading, as well as plans for expansion across additional networks and mobile platforms. He also examined the role of user experience design, automation, and emerging AI-based tools in making decentralized financial services easier to navigate, while outlining the platform's ongoing development, ecosystem growth efforts, and introduction of the HOME token as part of its broader infrastructure. ^[6]