30 Day Challenge - LockIn30

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Everyone
10+
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Everyone
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About this app

Want to stick with a 30 day challenge? LockIn30 turns one habit into a daily tracker with photos, streaks, and a finish-line timelapse. No ads, no account needed.

Pick a habit from a library of 36 across fitness, nutrition, mind, sleep, learning, productivity, spiritual, and relationships. Or create your own. Set a duration from 7 to 365 days (30 is the default). Choose tough mode (strict, with a Be Honest recovery if you miss a day) or soft mode (forgiving, no penalty). Log each day with the input that matches your habit: checkbox, counter, minutes, photo, text, or measurement.

Answers to your habit challenge questions
• How long does a 30 day challenge actually take to stick?
• What is the best 75 Hard alternative for a single habit?
• How do I track a habit streak without breaking it?
• What happens if I miss a day on a strict challenge?
• Can I run more than one habit challenge at a time?
• How do I share my progress with a daily photo timelapse?

Habit challenge setup
• 36-task library across 12 categories: fitness, nutrition, mind, sleep, learning, productivity, spiritual, relationships, hydration, self-care, progress, and your own
• 6 input types: checkbox, counter, duration, photo, text, measurement
• Any duration from 7 to 365 days, default 30
• Tough (strict) or soft (forgiving) mode
• Backdated start days auto-fill as exempt

Daily logging
• One-tap bottom sheet for each day
• Counters with custom increments for water, steps, or pages
• Duration tracking for workouts and meditation
• Photo capture with day numbers in the gallery
• Text entries for journaling, gratitude, and reflection
• Numeric tracking for weigh-ins and measurements

Progress photos & timelapse
• Gallery view organized by day
• Side-by-side photo compare
• 1080×1920 timelapse video at 4 FPS
• Day pill, completed-task overlays, and measurement chart overlays
• Save to your gallery or share

Statistics & insights
• Completion rate, best streak, and days done
• Daily completion line chart
• Numeric trend charts per habit
• Lifetime view across every challenge

Tough mode
• Strict 30 day challenge with daily checks
• Be Honest dialog when you miss a day
• Auto-fill rescue once per device
• Restart option that bumps your attempt counter

Reminders & milestones
• Per-habit daily reminders with quiet-day controls
• Half-way, three-quarters, and finish-line celebrations
• Shareable milestone cards with your day number

More to explore
• 30 themes, including dark variants
• 39 languages
• Daily affirmations on the dashboard
• Onboarding that suggests a habit based on a quick survey

Ad-free & private
• No ads
• No account required
• Every challenge, photo, and log stays on your device
• Works completely offline
• Available in 39 languages

LockIn30 is a 30 day challenge tracker for one habit at a time. Build a streak with a tough or soft routine and look back at your finish-line timelapse. No account needed.

One habit. 30 days. Lock in.
Updated on
May 17, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Financial info and Device or other IDs
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
Data can’t be deleted

What’s new

Welcome to LockIn30.
• Pick a challenge from a library of 36 or create your own
• Choose 7 to 365 days and tough or soft mode
• Log each day with photos, counters, journaling, or measurements
• Build a streak, see your stats, and share milestone cards
• Generate a timelapse video from your progress photos
• Get daily reminders with quiet-day controls
• No account required