Loop Habit Tracker

Loop Habit Tracker is a free, open-source Android app created by Álinson Santos Xavier in 2016. It is licensed under GPLv3 and available on Google Play and F-Droid. The app solves the common problem of habit tracking apps hiding features behind paywalls or subscriptions.

Features

• Habit Strength Score: An advanced algorithm calculates habit strength over time. Missed days reduce the score. Consistent repetition builds it back up without erasing all prior progress.
• Flexible Scheduling: Users can set daily habits or complex schedules. Examples include 3 times per week, every other day, or once every two weeks. The app auto-detects patterns from user behavior.
• Data Export: Users can export all habit data to CSV files for spreadsheet analysis or to SQLite database format. Notes added to entries are also included in CSV exports as of version 2.3.1.
• Privacy-First, Offline Storage: All data stays locally on the device. No internet connection is required. No data is shared with developers or third parties.
• Detailed Charts and Calendar View: Visual graphs show habit trends over time. A calendar view displays completed and missed days at a glance. Streak counts are also shown for measurable habits.

Use Cases

• For Privacy-Conscious Users: Loop stores all data locally with no account needed. It suits users who avoid cloud-dependent apps and want full control over personal data.
• For Budget-Conscious Individuals: The app is fully free with no in-app purchases. Every feature works for all users without any payment or premium tier.
• For Developers and Open-Source Contributors: The GitHub repository is public and forkable under GPLv3. Android developers can contribute code, translate the app, or build custom versions.
• For Long-Term Goal Builders: The scoring system rewards consistency over weeks and months. Users building fitness, study, or wellness habits benefit from the visual progress feedback.

Loop Habit Tracker is a capable, privacy-respecting Android app with a strong feature set and no cost to users. It lacks iOS support and cloud sync, which may limit some users despite its strengths.