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Best 100 Days Tracker Apps

242+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated May 2026

Looking for free 100 days tracker apps? 20 of our 242+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top 100 Days Tracker Apps (May 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1DayCountDayCountFree4.7★ (26K)NoYesAug 2026
2100 Days Tracker100 Days TrackerFree was $0.99—NoNoMay 2026
3Habit TrackerHabit TrackerFree4.8★ (145K)NoYesAug 2026
4Days Since: Quit Habit TrackerDays Since: Quit Habit TrackerFree4.8★ (19K)NoYesAug 2026
5DAY100-100 Days HabitDAY100-100 Days HabitFree3.8★ (4)NoYesJul 2026
6Hundred Day ChallengeHundred Day ChallengeFree—NoYesJul 2026
775 Days Challenge Tough & Soft75 Days Challenge Tough & SoftFree4.8★ (8.4K)NoYesAug 2026
8100-Day Habit Tracker100-Day Habit TrackerFree—YesNoMay 2026

Top Picks for 100 Days Tracker

DayCount#1

DayCount by Zaminiti Pty Ltd

Countdown Days Until Or Since
Editor's Choice
📊 Productivity
4.7😊(26K ratings)
FreeIn-App Purchases
DayCount screenshot 1
DayCount screenshot 2
DayCount screenshot 3
DayCount screenshot 4
DayCount screenshot 5
DayCount screenshot 6

Track time towards future events or since past milestones. Set custom reminders, build positive habits with streak tracking, and visualize your progress with customizable widgets. Stay organized and focused on what matters most.

What We Love

  • 👍 Intuitive and easy to use
  • 🚀 Clean and fast app
  • 💡 Customizable backgrounds and themes
  • 🎨 Beautiful and visually appealing design

Room to Improve

  • 🔒 Requires sign-in/account to use full features
  • 💰 Paid subscription for advanced features
  • 🐛 Bugs and glitches after updates
100 Days Tracker#2

100 Days Tracker by Chad Goodyear

Track it. Share it.
Strong Contender
🔧 Utilities
0.0(0 ratings)
FreeIn-App Purchases
100 Days Tracker screenshot 1
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100 Days Tracker screenshot 5

This app helps you build lasting habits by tracking your daily progress on up to 100-day challenges. Customize your goals with themes and layouts, and share your achievements. Widgets offer at-a-glance progress updates.

Habit Tracker#3

Habit Tracker by InnerGrow

Goal Tracker & ADHD Planner
Worth Considering
📊 Productivity
4.8😊(145K ratings)
FreeIn-App Purchases
Habit Tracker screenshot 1
Habit Tracker screenshot 2
Habit Tracker screenshot 3
Habit Tracker screenshot 4
Habit Tracker screenshot 5
Habit Tracker screenshot 6

This app helps you build lasting habits and achieve your goals through simple daily planning and routine tracking. It offers features like syncing with health data, group challenges, and insightful analytics to support your self-care and personal growth journey.

What We Love

  • 👍 Customizable and user-friendly interface
  • 🚀 Efficient and intuitive habit tracking
  • 💡 Comprehensive data visualization and progress tracking
  • 🔒 Secure and reliable app with no ads

Room to Improve

  • 🐛 Occasional bugs and glitches
  • 🔒 Lack of iCloud sync and cross-device support
  • 🔒 Limited free version with restricted features

More 100 Days Tracker apps to explore

4
Days Since: Quit Habit Tracker
Days Since: Quit Habit Tracker
Days Since: Quit Habit Tracker
Sober Streak Day Counter
Free

Break free from bad habits with this tracker. Create custom counters for any vice, like smoking, and visualize your progress. Stay motivated by seeing how long you've gone without giving in, helping you achieve your goals.

Custom habit countersTrack progress visuallyMotivation through tracking
💪 Health & Fitness
(19K)
free with in-app purchases
5
DAY100-100 Days Habit
DAY100-100 Days Habit
DAY100-100 Days Habit
Take on the 100-day challenge!
Free

This app guides you in building lasting habits through consistent daily actions over 100 days. It features a simple interface for tracking progress and smart reminders to keep you on track. Reach your goals with a celebratory screen upon completion.

100-day habit trackerDaily progress check-insSmart reminders
💪 Health & Fitness
(4)
free
6
Hundred Day Challenge
Hundred Day Challenge
Hundred Day Challenge
Track Your 100 Day Challenge
Free
📊 Productivity
(0)
7
75 Days Challenge Tough & Soft
75 Days Challenge Tough & Soft
75 Days Challenge Tough & Soft
75 soft medium fitness tracker
Free

This app supports a 75-day self-improvement and fitness challenge. It helps users track their daily tasks, stay motivated, and connect with a community of fellow participants. Unlock advanced features with an optional subscription.

75-day challenge trackingProgress monitoringMotivation tools
💪 Health & Fitness
(8.4K)
freemium
8
100-Day Habit Tracker
100-Day Habit Tracker
100-Day Habit Tracker
by KENICHI YAMAMOTO
Free
💪 Health & Fitness
(0)
9
100 DEDICATED - Goal Tracker
100 DEDICATED - Goal Tracker
100 DEDICATED - Goal Tracker
100 Day Challenge & Streaks
Free
$0.99 | 100% OFF

Build lasting habits with a visual 10x10 grid that tracks your progress. Capture your journey with daily photos and gain insights into your patterns to stay motivated. Celebrate milestones and achieve your goals.

10x10 visual progress gridDaily photo journalStreak tracking
💪 Health & Fitness
(0)
free with in-app purchases
10
Country Days Tracker: Bounded
Country Days Tracker: Bounded
Country Days Tracker: Bounded
Stay visa and tax compliant
Free

Automatically track your days spent in each country to ensure visa and tax compliance. Log your location via GPS or restore history from photos. All data remains private and offline on your device.

Automatic GPS country detectionRestore travel history from photosManual trip entry and editing
✈️ Travel
(193)
free with in-app purchases
11
100Days - Habit Tracker
100Days - Habit Tracker
100Days - Habit Tracker
Track your 100 day streak
Free

Build better habits and achieve personal goals with daily check-ins, smart reminders, and visual progress tracking. This app provides the structure and motivation needed to stay consistent on your journey to transformation.

Daily check-insSmart remindersVisual progress tracking
🌟 Lifestyle
(1)
freemium
12
Do It Note
Do It Note
Do It Note
Simple Goal Tracker
Free

This app helps you build and maintain good habits by setting and tracking goals over 30 or 100 days. Easily check off daily achievements with stickers and monitor your progress with a clear overview of your achievement rate and remaining days.

Set 30 or 100-day goalsDaily goal achievement trackingUse stickers for check-offs
🌟 Lifestyle
(2)
free with in-app purchases
13
Push Up Counter & Tracker
Push Up Counter & Tracker
Push Up Counter & Tracker
100 pushups in 6 weeks
Free

This app uses your device's camera and augmented reality to automatically count your push-ups. It offers various workout modes, detailed statistics, and motivational challenges to help you improve your performance and reach your fitness goals.

Automatic push-up counting via camera (ARKit)Personalized workout plans and calendarWorkout modes: Sequence, Open Goal, Limit, Timer
💪 Health & Fitness
(3.1K)
free with in-app purchases
14
Sober: Recovery Tracker
Sober: Recovery Tracker
Sober: Recovery Tracker
Sobriety & Addiction Counter
Free

This app helps users track sobriety days, build streaks, and break bad habits. It offers tools for motivation, relapse support, and community connection to aid in achieving lasting change and personal growth.

Sobriety day trackingSober streak buildingHabit breaking tools
🌟 Lifestyle
(7.6K)
free with in-app purchases
15
MixerBox BFF: Location Tracker
MixerBox BFF: Location Tracker
MixerBox BFF: Location Tracker
GPS Tracker Safe Life 365 Days
Free

Share your real-time location with loved ones and receive alerts for arrivals and departures. This app offers advanced location safety features, including a 30-day history, personalized maps, and the ability to find lost phones. It helps reduce anxiety by keeping you connected to family and friends.

Real-time location sharingArrival/Departure notifications30-day location history
🌐 Social Networking
(7.2K)
free with in-app purchases
16
90 Day Challenge
90 Day Challenge
90 Day Challenge
by Browney B.V.
Free

This app provides personalized 90-day fitness programs tailored to your goals, fitness level, and preferred training style. Track your progress with detailed metrics, view body changes, and stay motivated with streaks and badges. You can also challenge friends to join your fitness journey.

Personalized 90-day workout programsIn-app progress tracking (weight, reps, PRs)Monthly strength tests
💪 Health & Fitness
(4.8K)
free with in-app purchases
17
Death Clock: The Life Lab
Death Clock: The Life Lab
Death Clock: The Life Lab
Improve your health with AI
Free

This app uses AI and medical science to predict your lifespan and create a personalized plan for a longer, healthier life. It analyzes your health data, provides evidence-based recommendations, and tracks your progress in real-time.

AI-driven lifespan predictionPersonalized health and longevity plansBloodwork analysis and interpretation
💪 Health & Fitness
(16K)
subscription
18
Menstrual Calendar FMC
Menstrual Calendar FMC
Menstrual Calendar FMC
Period Tracker, Fertile Days
Free

This app helps you track your menstrual cycle, predict periods and fertile days, and record wellness data. It offers customizable tracking, discreet notifications, and privacy features for personal cycle management.

Period and flow recordingMood and wellness trackingFertility sign logging
💪 Health & Fitness
(190)
free
19
Fertility Friend FF Tracker
Fertility Friend FF Tracker
Fertility Friend FF Tracker
Ovulation Cycle & Fertile Days
Free

This app helps women track their ovulation and fertile days with advanced charting tools. It provides personalized insights into your cycle, helping you understand your fertility signs and maximize your chances of conception. Millions of women trust it for accurate cycle analysis and pregnancy tracking.

Ovulation detectionFertile window predictionBBT and cervical fluid tracking
💪 Health & Fitness
(7.3K)
freemium
20
Period Tracker Period Calendar
Period Tracker Period Calendar
Period Tracker Period Calendar
Cycle Tracker & Ovulation
Free

This app helps women track their menstrual cycles, ovulation, and fertility. It offers personalized advice, pregnancy tracking, and reminders for birth control and medication. Your data is kept private and stored locally on your device.

Period and ovulation predictionFertility trackingPregnancy mode with week-by-week growth
💪 Health & Fitness
(172K)
free with in-app purchases

FAQ about 100 Days Tracker

What are the best 100 days tracker apps for iPhone?
DayCount tops our 100 days tracker apps ranking as of May 2026, with a 4.7-star average from 26K App Store ratings, and it's free to download.
Yes — 20 of the top 100 days tracker apps we rank are free to download, including DayCount and 100 Days Tracker.
DayCount has no ads and offers in-app purchases, according to its App Store listing as of May 2026.
We track 242+ 100 days tracker apps on the iOS App Store as of May 2026, ranked by rating, recency, and analysis of real user reviews.
DayCount helps you stay aware of time by counting down to upcoming events or counting up since past important moments. It allows you to set custom reminders, track daily streaks for habit building, and visualize your progress with customizable widgets.
Key features include event counters for both countdowns and count-ups, streak and habit tracking to build positive routines, customizable widgets for your Home and Lock Screen, flexible reminder settings, event grouping with custom categories, and the ability to add images to your events.