Thornsel Labs builds rigorous, privacy-first iOS software for communities and workflows the App Store has overlooked. Each product is a complete engineered system — protocol-aware, on-device, built to hold up over years of daily use.
Engineering principles that survive the difference between launch demos and what people actually use on a Tuesday at 6am
Each product is purpose-built for its domain — protocol-aware, language-aware, constraint-aware. We don’t ship “wellness apps.” We ship the specific tool the specific community actually needs.
Data stays on-device. No accounts by default, no cloud sync, no analytics dragnet, no third-party telemetry. iCloud backup where it makes sense — opt-in, encrypted, user-controlled.
Constraint engines where the workflow demands them. Audit-logged change history where decisions matter. Real metrics, structured data models, considered migrations.
Daily-use software has to hold up over years. Schema migrations, data integrity, recovery paths — designed in from the first commit. The user’s history is the product.
Releases, beta access, and the occasional engineering note from the studio. No marketing noise.
DIRECT — hello@thornsellabs.com
