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About 100 Days Locked In

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.

What’s new

Version 2.3 · Updated October 6, 2026

Added analytics for app tracking and testing.

App privacy

The developer, Nicholas Hufnagel, reported these privacy practices to Apple.

Data Linked to You

The following data, which may be collected and linked to your identity, may be used for the following purposes:

  • Health & Fitness: Health, Fitness
  • Contact Info: Email Address, Name
  • User Content: Photos or Videos, Other User Content
  • Identifiers: User ID

Used for: App Functionality

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • Location: Coarse Location
  • Identifiers: Device ID
  • Usage Data: Product Interaction, Other Usage Data

Used for: Analytics

Alternatives to 100 Days Locked In

Looking for apps like 100 Days Locked In? Here are 6 similar apps on the App Store. The highest rated is J Newtrition (5.0/5), and all 6 are free to download.

100 Days Locked In vs. alternatives
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100 Days Locked In 5.0 / 5 (1 rating) Free October 6, 2026
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