Social community

Bump

Website

Bump was acquired by Google in 2013. The Bump and Flock apps were shut down, but our unreleased Photoroll app went on to become the basis for Google Photos, which we led from inception to more than 1B users. Bump let you exchange contact info and photos by bumping phones together. Bump was one of the all-time top mobile apps, amassing more tha

Founded 2009Origin source ↗Checked 2026-09-15

Overview

Bump was acquired by Google in 2013. The Bump and Flock apps were shut down, but our unreleased Photoroll app went on to become the basis for Google Photos, which we led from inception to more than 1B users.

Bump let you exchange contact info and photos by bumping phones together. Bump was one of the all-time top mobile apps, amassing more than 150M installs by 2013. Flock was a semi-automated photo sharing app that figured out which photos you took with which friends and created private shared albums.

Bump was co-founded in 2009 and received funding from Y Combinator, Sequoia, and Andreessen-Horowitz. We were based in Mountain View, CA.

Company description As recorded 2026-11-08

Founders & team

David Lieb

Founder/CEO

YC Group Partner. Cofounder Google Photos. Cofounder Bump (S09), acquired by Google.

Founder profile As recorded 2026-09-15
30team members reported
Source-reported As recorded 2026-09-15

Founded 2009 · Source

News & product activity

Sources & observations

Y Combinator

Profile depthverified profile
Website observationwebsite unreachable
Last website check2026-11-11
Location · source statedSan Francisco, CA, USA
Pricing evidenceNo pricing page confirmed
Maturity: Not assessed · 3 of 6 areas documented

Source-based assessment · automated evidence rules

The source reports an inactive or acquired company; current product identity needs review.

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.

Stage definitions
independent websitesource corroborationdescriptive evidenceclassified market and modelsourced peoplesourced founding year