xDays: Habit Tracker

New habits, at your own pace

Free · In‑App Purchases

A habit doesn't form in 21 days, but in the time it takes you. xDays walks with you phase by phase, guilt-free. No account, no subscription. It isn't hard to know what's good for you. What's hard is truly fitting it into your days: moving more, eating better, taking time for yourself, meditating. It's not about time, and not even about motivation. It's about habit. No one wonders every morning whether to brush their teeth: it's automatic. And everything else can become the same. Healthy habits don't come from motivation, they come from repetition. At first it takes discipline, then it becomes natural. Repeat an action long enough and it becomes a new mental pattern, something that's part of you. All it takes is time and patience. And if it's hard on your own, get help: a class, a group, a professional. The alternative is to keep doing the same things, without investing in yourself. Yet your potential, physical and mental, is immense. Discovering it is one of the most beautiful things there is. xDays was made to walk this path with you, one day at a time. NOT 21 DAYS. YOURS. The famous 21 days is enough comes from a 1960s observation, not a study. Phillippa Lally's research (University College London, 2010) followed real people as they built new habits: on average it took about 66 days, ranging from 18 to 254. Everyone has their own pace, and xDays respects yours. THE 4 PHASES Every habit goes through four phases: Starting, Habit, Automatic, Lifestyle. Days open a phase, but you confirm it: now and then xDays asks how natural the habit feels (1 to 5 stars), and the phase follows what you actually feel, not just the calendar. The thresholds are scientific averages and you can change them. NO GUILT Missing a day happens. You get one grace day a month that protects your streak and, after a break, xDays never scolds you: it just reminds you that you can pick it up today, because nothing is lost. BUILD OR LET GO • Habits to build, like reading or walking, or to break • Tie it to a time with a reminder, or to a routine you already have, like after breakfast: research says it's the most effective way • Every day, on set days or a number of times a week, with make-ups and bonus days ONE-TAP CHECK-IN • From the app or the widget on your Home Screen and Lock Screen • From the notification, without opening the app • With Siri and Shortcuts • From your wrist with Apple Watch, even when your iPhone is out of reach SEE HOW YOU CHANGE • Streaks, records, consistency and calendar for each habit • The automaticity curve: how an action becomes natural, week after week • With Premium: year map, your best day and trends across all your habits PRIVACY, FOR REAL No account, no ads, no tracking. Your habits stay on your devices and in your private iCloud: we can't see them. iCloud sync is included for everyone. FREE, AND PREMIUM WITHOUT A SUBSCRIPTION • Free: one habit with phases, ratings, check-ins, reminders, widgets, Siri and iCloud sync • xDays Premium, a one-time purchase: unlimited habits, full stats, Apple Watch app, set days and times per week, card styles and colors • Try Premium free for 7 days: when it ends you pay nothing and nothing renews Available in 22 languages. Be curious about yourself.

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

The developer, Nicola Radaelli, 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 Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    Nicola Radaelli
    Size
    12.3 MB
    Category
    Health & Fitness
    Compatibility
    Requires iOS 18.0 or later.
    • iPhone
      Requires iOS 18.0 or later.
    • Apple Watch
      Requires watchOS 11.0 or later.
    Languages
    English and 21 more
    • English, Arabic, Czech, Danish, Dutch, Finnish, French, German, Hindi, Hungarian, Icelandic, Italian, Japanese, Korean, Norwegian Bokmål, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Turkish
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © 2026 SmallAppStudio
  • Privacy Policy

    • More by Nicola Radaelli