Streak Sync Tracker

On-device habit streaks with offline-first sync and local nudges

DevelopmentShipped

v0.4.0 Ships Offline-First Sync Engine

The team has released the core sync module that queues all streak check-ins locally and flushes them when connectivity returns. Early tests on 3G/4G show zero data loss during dropouts.

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DesignApproved

Privacy-First UI Passes Internal Review

All habit data is processed on-device; no telemetry or analytics calls are made. The interface now displays a clear 'offline' badge when no network is available.

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TestingValidated

Field Test on Commuter Rail Network

Beta users on the Northeast Corridor reported consistent streak logging through tunnels and dead zones. Sync triggered successfully at station Wi-Fi hotspots.

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Machine LearningOptimized

Edge ML Model Optimized for A17 Pro

The on-device reminder model now runs inference in under 12ms on Apple's A17 Pro chip. No server round-trips are needed for personalized nudge timing.

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DevelopmentLive

Notification Timing Learns Daily Patterns

Users report nudges arriving 5–10 minutes before their typical habit window. The model adapts to irregular schedules without ever sending data to the cloud.

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LaunchOpen

Public Beta Opens With 500-Slot Cap

The first 500 users have been onboarded. No cloud accounts required — all habits are stored in on-device SQLite. Sync is purely opportunistic.

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SecurityAudited

Streak Data Never Touches Third-Party Servers

A third-party audit confirmed zero data exfiltration. The app uses no Firebase, no Amplitude, no Crashlytics — only local storage and encrypted opportunistic sync.

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DesignFinalized

Offline Badge and Streak Flame Colors Finalized

UI uses a muted gray badge when offline and a warm orange flame for active streaks. Both treatments respect reduced-motion accessibility settings.

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DevelopmentPassed

Sync Queue Handles 10,000 Pending Events

Stress testing shows the local queue can buffer up to 10,000 check-in events before sync. Background sync runs when the device detects a stable network.

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CommunityFeatured

First User Stories: Streaks Survive Cross-Country Flights

A user documented a 14-day streak maintained across 4 time zones with no cloud connection. Sync caught up within seconds of landing and connecting to hotel Wi-Fi.

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Machine LearningMeasured

Nudge Accuracy Reaches 92% in Week-Long Trial

On-device pattern matching hit 92% precision for reminder timing. Users received nudges within a 2-minute window of their typical habit start.

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LaunchPending

App Store Listing Submitted Under 'Tracker' Category

The app is listed as a productivity utility with a privacy nutrition label that shows zero data collection. Review is expected within two weeks.

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