Case Study: HQ Trivia achieves real-time push delivery to millions and higher engagement with OneSignal

Push Notifications Drive Millions of Users into HQ

HQ Trivia, Time Magazine’s “App of the Year,” runs live, twice-daily game shows and depends on push notifications to drive millions of users into each event. Needing every user to receive pushes simultaneously and wanting flexible, personalized messaging across game variants, HQ Trivia engaged OneSignal’s push notification platform to replace its internally managed system.

OneSignal delivered a high-performance push solution — NVMe SSD database servers (5 GB/s read, 1,000,000 4k IOPS), a Rust-based stack, and Lightspeed Technology that parallelizes delivery across 32 threads to handle 850,000+ notifications per second (about 500% faster than traditional SSD systems). Combined with OneSignal’s easy segmentation and messaging tools, HQ Trivia saw improved click-through rates and retention, enabling concise, targeted pushes (most under six words) that drive urgency and measurable engagement gains.

HQ Trivia

Andrew Watts

Marketing Manager