Review your days in Calendar and Timeline. View photos in full screen, save them individually, and edit notes after recording.
02
Choose 3 Difficulty Levels
Pick Normal, Hard, or Extreme Mode. Keep it light or make the challenge serious.
03
Never Forget with Alerts and Widgets
Recommended notifications and home screen widgets support your habit even when the app is closed.
KEEP YOUR DAYS
Give your days a lasting form.
Your daily photos and the thoughts behind them. Save them as an image, video, or PDF to keep for yourself or share with someone.
IMAGE
100 days. One image.
Bring your recorded photos together in a single image. See all the little changes at a glance.
VIDEO + MUSIC
Your progress, set to music.
With 30 days of photo records, create a time-lapse video. Choose from 10 original music tracks, including 2 free tracks. You can also choose the DAY display style and video playback speed.
PDF
Memories, made into a book.
A PDF record book with dates, notes, and photos. Save it to revisit later, or print a copy to keep.
Three Modes for How You Continue
Choose reset rules that match the weight of each habit.
self_improvement
NORMAL
Normal Mode
The basic mode for stacking recorded days. Best when you want to build momentum without pressure.
local_fire_department
HARD
Hard Mode
Miss two days in a row and reset to DAY0. Built for people who want real tension.
EXTREME
Extreme Mode
Miss even one day and reset to DAY0 the next day. The strictest mode for creating a reason to act today.
EXTREME MODE
Extreme Mode closes the exits.
In Extreme Mode, selected apps can be blocked until today’s habit is completed. Limit the apps you open automatically and make finishing today’s habit the first step.
Supports iOS Screen Time / Family Controls
Everything That Helps You Keep Going
Recommended Notifications
Notification times and messages are optimized for Normal, Hard, and Extreme Mode. Stricter modes push harder.
Home Screen Widgets
For records with photos, widgets display DAY over your photo. Check progress without opening the app. Pro unlocks weekly and monthly premium widgets.
Cloud Storage and Transfer
Images added to records can be stored in the cloud. Use a transfer code to move habits, notes, and images to a new device.
DAY Collection
Review earned DAY artwork in Settings. Collect DAY1 through DAY100, plus special DAY milestones beyond 100 days.
DAY100 Pro
More ways to keep going. More ways to keep your memories.
Work toward more goals and enjoy your daily records. Make your habit-building routine your own with DAY100 Pro.
checkUnlock the habit limit and manage 4 or more goals together.
checkUse Extreme Mode for multiple habits to stay focused on each goal.
checkSee your progress with weekly and monthly premium widgets.
checkRecord up to 10 photos a day, including the process and the memories.
checkExport images and videos without a watermark.
checkChoose your export aspect ratio to suit how you share.
checkUse all 10 original background music tracks for your videos.
FIND YOUR WAY
Find a guide
Choose a goal or obstacle to see how DAY100 can help you keep going.
DAY100 is an iPhone habit app for tracking small daily actions for 100 days. You can review progress in a calendar and keep going with notifications, widgets, and app blocking.
Can I use DAY100 for free?
Yes. You can download DAY100 for free and use 100-day tracking and the basic features. DAY100 Pro unlocks 4+ habits, multiple Extreme Mode habits, premium widgets, and more.
What is the difference between Normal, Hard, and Extreme Mode?
Normal Mode stacks your recorded days. Hard Mode resets to DAY0 after two missed days in a row. Extreme Mode resets to DAY0 the next day if you miss even one day.
What can app blocking do in Extreme Mode?
In Extreme Mode, selected apps can be blocked until today’s habit is completed. It supports iOS Screen Time / Family Controls and helps you finish the habit first.
Can notifications and widgets help me avoid forgetting records?
Yes. Recommended notifications and home screen widgets help you keep going for 100 days even when the app is closed. Notifications are tuned to your selected mode.
Can I transfer habits, records, notes, and images to a new phone?
Yes. You can use a transfer code to move habits, records, notes, and images to your next device. Images added to records can also be stored in the cloud.
Can I save photos and edit notes after recording?
Review your days in Calendar and Timeline. View photos in full screen, save them individually, and edit notes after recording.
Can I export photos and notes as an image or PDF?
Yes. From the export menu on the habit detail screen, combine photos into one image or save, share, and print a PDF record book with dates, notes, and photos. Samples in the menu show how exports look.
How many days do I need to create a time-lapse video?
You need 30 days of records with photos. Adding 30 photos on a single day does not count as 30 days. The export menu shows how many more days you need. You can also choose the DAY display style and video playback speed.
Are image and video exports free?
Yes. The free plan includes image and video exports with a watermark and 2 of the 10 original music tracks. DAY100 Pro includes up to 10 photos per day, watermark-free exports with a choice of aspect ratio, and all 10 music tracks.
Can I use Pro after changing devices or reinstalling?
DAY100 automatically checks the status of your previous Pro purchase. Use a transfer code to move habits, records, notes, and images.
Can I continue after reaching 100 days?
Yes. After DAY100, progress continues toward the next 100 days. DAY Collection in Settings shows earned artwork from DAY1 through DAY100 and special DAY milestones beyond 100 days.
