静心 Jingxin

Jingxin is a guided-meditation app. It doesn't stack features; it returns to meditation itself: one breathing ring on the screen, only the guidance that should appear in your ears.

• Restraint: only four core modes—no irrelevant social, ads, or reminders.
• Focus: while meditating, the interface recedes to a minimum, leaving the breathing ring as the only point of focus.
• No distraction: dark theme and low-saturation colors reduce visual noise.

• Breathing meditation: the 4-7-8 technique—inhale 4 seconds, hold 7, exhale 8. The rhythm slows the nervous system.
• Mindfulness meditation: a body scan—from toes to head, sensing each part in turn, bringing attention back to the present.
• Guided meditation: a 10-step guide, following the prompts through a complete practice.
• Relaxation meditation: a visualization—ocean-wave animation plus scene description, letting a tense body relax.

Jingxin won't push you to practice, but it records every session, turning persistence itself into feedback.

• Meditation log: every session records start time, duration, mode, and completion state.
• Cumulative time: total minutes practiced, making effort a visible, quantified accumulation.
• Streaks: a streak record, using continuity to counter the "miss one day and give up" mental trap.

Built with Flutter, lean state, clean architecture, with extra care for the part that goes wrong most often—background timing.

• Lifecycle handling: records the time when the app pauses and subtracts background time on resume, keeping meditation timing accurate.
• Provider state management: duration, mode, and history managed together, with UI separated from data.
• Persistence: records stored as JSON via shared_preferences, surviving restarts.
• Responsive layout: uses LayoutBuilder to fit different screens; the breathing ring scales with width, and touch targets stay at least 44px.

• Primary background: #0D1117 deep-space black—low brightness, gentle on the eyes.
• Secondary background: #161B22 deep gray—clear hierarchy without glare.
• Accent: #58A6FF quiet blue—the motion of the breathing ring, calm and guiding.
• Visual system: colors, spacing, and sizes unified as constants to keep the whole app consistent.

• Ambient sound: rain, waves, forest—more atmosphere for the relaxation mode.
• Haptic feedback: a subtle vibration on breathing transitions, instead of visual interruption.
• Data charts: visualize meditation stats, making progress clearer.
• Custom rhythm: let users adjust the exact breathing durations.
• Multilingual: beyond Chinese, so more people can use it.