a42 is a Life OS for turning goals and repeatable methods into daily plans, evidence, and shared progress. I designed and built the product across its iOS, Android, and web surfaces.
The product resolves reusable templates into the right plan for each day, then preserves finished days as immutable history. Habits, milestones, resolutions, notes, ratings, and schedules remain connected to the daily work that produced them.
A shared template model lets individuals adopt proven structures while coaches, teams, and partner organizations can publish plans and follow progress without copying another person's private entries.
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What I built
Defined the product model around reusable templates, typed planning blocks, weekly schedules, date overrides, and historical snapshots.
Designed and implemented the cross-platform mobile experience for iOS and Android together with the supporting web platform.
Built connected flows for habits, milestones, resolutions, search, history, shared templates, and community participation.
Designed the optional AI connection around explicit permissions and evidence-bound proposals, so external assistants can use approved context without bypassing product rules.
