No more struggling, no more burnout. What you need isn't harsher self-discipline, but smarter rhythm. Supports iPhone/iPad/MacOS.

I. Core Principles

1. Neural Replay Mechanism
Latest neuroscience research shows that inserting a few seconds of random rest during focus periods causes the brain to replay previous information at 20x speed, a phenomenon known as "Neural Replay."
—"Replay of Learned Neural Firing Sequences during Rest in Human Motor Cortex"

2. Variable Ratio Reinforcement
The "variable ratio reinforcement" mechanism every 3-5 minutes, like drawing cards in games, creates an addictive feeling towards focus.

3. BRAC Physiological Rhythm Model
Work cycles are recommended to be kept within 90 minutes, followed by 15-20 minutes of deep recovery rest (such as meditation, closing eyes, light activity), keeping you efficient throughout the day without exhaustion.
—"Why I Can Study 10 Hours Daily" by Bilibili UP Master Zeen

This is the core logic of "Interval Flow" - scientifically distributing attention rhythm, sustainable without consumption.
In short, "Interval Flow" is not just another timer tool, but a scientifically supported cognitive rhythm training method. It helps your brain automatically enter focus flow at the right rhythm, learn faster, and perform better.

*Note: During breaks, it's recommended to replenish sodium and potassium ions. Avoid using phones or playing games as they consume brain vitality. Recommended activities include meditation, daydreaming, light exercise, and listening to soft music.

III. Core Features

Focus Mode
- Customizable focus duration (up to 90 minutes)
- Random micro-break reminders every 3-5 minutes (adjustable up to 15 seconds)
- Switchable to standard Pomodoro mode (25+5)
- Automatic switching between focus and rest phases, no manual operation needed

Data Tracking and Visualization
- Focus/rest time chart analysis
- Focus completion rate and micro-break frequency statistics
- Daily/weekly/monthly focus trend visualization
- Focus quality scoring and intelligent suggestions

Task Management System
- Create, edit, and archive focus tasks
- Track task completion and generate related reports
- View task history and optimize time allocation

Motivation System
- Unlock focus achievement badges

Others
- Support for night/day theme switching
- Support for iPhone, iPad, and Mac multi-device adaptation

~~~~~~~~

III. Suitable Scenarios
- Exam takers: Enter state faster, higher efficiency
- Knowledge workers: Stay away from distractions, maintain high efficiency
- Creators: More freedom in switching between inspiration and rhythm
- Easily distracted people: Maintain focus without relying on willpower

~~~~~~~~

Privacy Statement
- All data is stored locally on the device
- No internet connection required
- No personal information collection, no data upload

~~~~~~~~

This application is subject to the standard Apple End User License Agreement:
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/