100 Days Locked In
Health & Fitness
Only for iPhone
Free
iPhone
100 Days Locked In helps you commit to a focused 100-day fitness challenge and track the daily habits that make the challenge work.
Create your challenge, follow a structured training plan, and check off the essentials each day: workout, cardio, steps, macros, no alcohol, and progress check-ins. The app turns those habits into a daily score so you can see whether you are staying locked in.
Progress tools help you log body weight, body fat, photos, notes, and consistency over time. Social features let you follow friends, join groups, view leaderboards, share Bam Cam progress photos, and keep accountability visible without making everything public.
Built for small private groups, early fitness challenges, and anyone who wants a simple way to stay accountable for 100 straight days.
Ratings & Reviews
Version 2.2 introduces a refreshed challenge experience, improved daily planning and progress insights, stronger Bam Cam and social accountability tools, and broad UI/UX refinements. We also fixed social photo issues and improved reliability throughout the app.
The developer, Nicholas Hufnagel, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Contact Info
- User Content
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Nicholas Hufnagel
- Size
- 19.6 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
18+
- 18+
- Frequent
Alcohol, Tobacco, Drug Use or References
Contains
User-Generated Content
Health or Wellness Topics
Social Media
- Copyright
- © 2026 PATX Group