Jacob Sprake
Founder & builder. Between London and Milan.
I build software at the edges — critical-infrastructure tooling, consumer apps, agency tools. Most of it ships under SPR Labs Ltd, the holding company for what I'm working on.
Alongside that, I run growth and marketing at StudyStream (Y Combinator) end-to-end — brand, performance, lifecycle, and analytics. That includes a UGC programme of 500+ content creators across Instagram and TikTok, paid acquisition across channels, and the reporting stack that ties campaign spend back to retention and revenue.
I founded the City of London Youth Natural Environment Board and still spend time on environmental work — biodiversity, urban green policy, and how cities make decisions about their natural systems.
Ventures
- Munin Systems Sovereign orchestration for critical infrastructure. Compresses cross-agency authorization during cascading failures.
- SweetSpot Decode sweeteners, make better choices. Evidence-weighted scoring across 57 sweeteners.
- Sort Creator Chrome extension agencies use to scrape, score, and rank creators on TikTok and Instagram.
- Grit Autonomous workout tracker for serious lifters. iOS, watchOS, widgets.
- SPR Labs Ltd The holding company. Where the apps live.
Sustainability
I founded the City of London Youth Natural Environment Board — bringing under-25s into the room when the City makes decisions about urban biodiversity, air quality, and the public realm. The work continues to inform how I think about systems that touch the physical world: infrastructure, cities, the environments they sit in.