BirtuSince

Overview

A zero-network, battery-efficient Android elapsed-time and cadence tracking engine engineered for absolute data sovereignty, high-precision milestone logging, and habit analytics.

Key Features & Architecture

• • Deterministic delta engine & auto-scaling precision: calculates elapsed duration on-demand from immutable UTC timestamps without running background accumulator threads, dynamically scaling format granularity from seconds up to multi-month spans.
• • Cadence intelligence & pattern variance analytics: transforms recurring resets into statistical telemetry across historic runs, automatically deriving mean intervals, minimum/maximum extremes, and a coefficient-of-variation consistency score rendered on a customized bar graph.
• • Zero-network local notifications & widget control: leverages the native Android AlarmManager and AppWidget framework to dispatch precise interval reminders and allow home-screen resets without launching the primary app process or touching external push networks.
• • Hardware-backed Keystore encryption & biometrics: secures sensitive records at rest using AES-256-GCM cryptographic keys generated in the Android hardware security module, masking titles and timers behind native fingerprint and facial authentication.
• • Atomic offline portability & schema migration: features a resilient JSON serialization pipeline that enables users to export or restore entire event libraries and historic laps with complete relational mapping, offering both additive merging and atomic wipe-and-replace options.