OUT NOW · FOR iOS
Build consistency with 100Days
Whether it's 5 minutes or 5 hours a day — what matters most is showing up, one day at a time.
Available Now
Active Users
Stay Consistent
Habits Tracked
Turn daily actions into lasting transformation in just 100 days
92% of our users build consistent habits that stick. Join 1,000+ people who've transformed their lives through daily commitment.
What is 100Days?
A minimal yet powerful app with one purpose — making you consistent for 100 days.
Whether building discipline, improving health, or learning something new, 100Days provides the structure and accountability you need.
Visual streaks and progress metrics that motivate
Timely nudges without overwhelming notifications
Celebrations and challenges to maintain momentum
Optional partners to push you through tough days
KEY FEATURES
Daily Check-ins
Build momentum day by day
Smart Reminders
Stay on track without spam
Progress Analytics
See streaks & earn badges
What People Are Saying
Join thousands of people who have transformed their habits with 100Days
Alex Rodriguez
San Francisco, CA
"After struggling with inconsistency for years, 100Days helped me finally stick to daily meditation. I'm on day 78 and feeling incredible!"
Jessica Taylor
Chicago, IL
"The simple interface keeps me focused on what matters - showing up every day. I've written 50,000 words in my novel by committing to just 20 minutes daily."
Darren Johnson
Atlanta, GA
"I've tried dozens of habit trackers, but 100Days is different. The design is clean, the reminders are helpful but not annoying, and I love seeing my progress."
Maya Williams
Seattle, WA
"As a fitness trainer, I recommend 100Days to all my clients. It helps them build workout consistency better than any other method I've tried. I'm seeing amazing results!"
Ethan Cooper
Denver, CO
"100Days helped me quit a 10-year smoking habit. The streak motivation keeps me going when willpower isn't enough. Best decision I've made for my health!"
Olivia Martinez
Austin, TX
"As a college student, 100Days helped me develop a consistent study routine. The simplicity is what makes it work – I just focus on showing up each day for my goals."
Not Just Another Habit Tracker
Built specifically for the 100-day transformation method, not generic habit logging
Purpose-built for 100-day challenges
Grace days for real-life flexibility
Milestone celebrations every 7, 30, 50, 75, and 100 days
Accountability partner system
Smart reminders that adapt to you
Beautiful, distraction-free design
Progress analytics & insights
Built by someone who completed 75 Hard
Generic habit logging without purpose
All-or-nothing approach causes burnout
No meaningful milestones or celebrations
Solo journey with no support system
Annoying or non-existent reminders
Cluttered with unnecessary features
Basic streak counting only
Built for profit, not transformation
Transform in 100 Days
A simple, powerful approach to help you build consistency and transform your life in just 100 days
Learn a new skill
Code, language, instrument — master anything with daily practice. Track your progress and see how far you've come.
Build discipline
Create unbreakable habits through consistent daily action. The app helps you stay on track even on difficult days.
Transform your fitness
See remarkable changes with 100 days of dedicated movement. Log your workouts and watch your strength and endurance grow.
Start Your Transformation Today
Don't wait for the "perfect time" — the best day to start was yesterday. The second best day is today.
For Everyone
100Days is for everyone. Anyone has the power to transform their life through daily consistency.
Creators building consistency
Founders tracking momentum
Students mastering new skills
Anyone seeking better habits
Everything You Need to Transform
100Days is a premium experience designed for people serious about transformation
Unlimited Challenges
Track as many habits as you want simultaneously
Accountability Partners
Connect with friends and stay motivated together
Advanced Analytics
Deep insights into your progress and patterns
Achievement System
Earn badges and unlock milestones as you progress
Grace Days
Life happens - maintain your streak with flexibility
Smart Reminders
Personalized notifications that adapt to your schedule
Join thousands building better habits with 100Days
Get Started on App StoreAvailable exclusively on iOS
Frequently Asked Questions
Everything you need to know about getting started with 100Days