Self Log: Habit & Data Tracker

boxboxcatstudio

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About this app

Self Log is a free, offline self-tracking and personal analytics app for Android. Build your own questionnaires, track habits, routines, behaviors and daily observations, then turn what you log into useful graphs, comparisons and hypotheses.

Instead of forcing you into a fixed habit tracker, mood tracker or journal template, Self Log lets you decide what matters. Create custom questions, reuse them across questionnaires and events, and build a tracking setup that fits your life.

TRACK ANYTHING

Create fully customizable questionnaires for habits, routines, productivity, focus, sleep, screen time, energy, mood, learning, exercise, daily reflection or anything else you want to observe. Use reusable questions and quick actions to make daily tracking faster.

TEST HYPOTHESES ABOUT YOURSELF

Go beyond simple streaks and checklists. Create a hypothesis such as “Does X affect Y?” and follow the result as a graph. Self Log helps you explore relationships in your own data instead of only collecting entries.

COMPARE PERIODS

Want to know whether something changed after a new routine, project, schedule or experiment? Compare a baseline period with another period and see both timelines directly in one chart. This makes before-and-after tracking, personal experiments and self-improvement reviews much easier.

DISCOVER PATTERNS AND CORRELATIONS

Explore correlations and patterns in the data you track. See direction, strength, sample size and statistical significance, and use Deep Scan to look for relationships you may not have thought to test manually.

BUILD YOUR OWN ANALYTICS DASHBOARD

Star the graphs and insights that matter most to you. Your starred analytics appear at the top of the Analytics page, so you can build a personal dashboard around the questions, hypotheses, trends and comparisons you actually care about.

MORE THAN A HABIT TRACKER

Self Log can work as a habit tracker, routine tracker, productivity tracker, personal journal, daily tracker, self-improvement tracker, quantified-self tool or flexible data journal. You define the questions, the structure and the meaning of your data.

REMINDERS WHEN YOU NEED THEM

Use optional reminders to stay consistent with your tracking. Choose simple notifications or stronger reminder modes when you want extra accountability. Reminders support the tracking workflow without defining the app.

PRIVATE AND OFFLINE

Your personal tracking data stays on your device. Self Log works without an account and is designed for people who want private self tracking without sending their daily data to a cloud service.

FEATURES

* Custom questionnaires and reusable questions
* Habit, routine and daily tracking
* Hypothesis testing with visual graphs
* Baseline vs comparison period charts
* Correlations, trends and pattern analysis
* Starred graphs and personal analytics dashboard
* Events and calendar-based logging
* Flexible reminders and quick actions
* Deep Scan for exploratory analysis
* Local, offline data storage
* No account required
* Import and export options
* Multiple themes and display settings

Self Log is built for curious people who want more than streaks. If you like self tracking, personal analytics, quantified self, habit tracking, journaling, productivity tracking or running small experiments on your own routines, Self Log gives you one flexible place to collect the data and actually do something with it.

Track what matters. Test your ideas. Compare what changed. Keep the insights that matter to you.