Don't Miss Birthdays (also known as DMB) is the free offline iPhone & iPad app that combines a smart birthday reminder, a precise age calculator, a live birthday countdown, an anniversary tracker, and a special event reminder for every person who matters. Five calendar systems (Gregorian, Hijri, Hebrew, Persian, Buddhist), iCloud sync, PIN lock, 14 languages, and privacy first.
The most complete birthday reminder, age calculator, and anniversary tracker for iPhone
Forgetting a friend's birthday or your parents' wedding anniversary can hurt the people you love most. Don't Miss Birthdays (DMB) is a thoughtful iOS app designed to help you remember every important date, not just birthdays but also marriage anniversaries and any other meaningful event in someone's life. Whether it's the day a loved one moved into their first apartment, started their first job, the day you first met them, or the anniversary of a memorial, every date that matters can be tracked with its own birthday reminder, ring color, and detail page.
Unlike generic calendar apps, DMB is built specifically around people and their important dates. The app combines a birthday reminder, an exact age calculator, a live birthday countdown, an anniversary tracker, and a special event reminder in a single offline-first iOS experience. It supports five calendar systems out of the box (Gregorian, Hijri (Islamic), Hebrew, Persian (Solar Hijri), and Buddhist) and works in 14 languages including full right-to-left support for Arabic. It is a free birthday tracker app, with no subscription, no paywalled features, and no required account.
Your data stays private and works offline: every profile lives on your iPhone and (optionally) in your own private iCloud. We never see your contacts, dates, names, or phone numbers. The optional 4-digit PIN lock adds an extra layer of protection so only you can open the app.
Track every important date for the people who matter most
Add profiles with birth dates, names, gender, nicknames, phone numbers, emails, and blood types. The birthday reminder shows upcoming birthdays at a glance with progress rings showing days remaining and detailed current age in years, months, and days.
Track marriage dates alongside birthdays. The wedding anniversary tracker shows how many years each couple has been married, age at marriage, milestones, and upcoming anniversaries, all with their own pink progress ring and dedicated detail tab.
Add a third meaningful date to any profile, such as a move, a first job, the day you first met, a memorial day, or any other date worth remembering. Each special event reminder has its own orange flame ring, alert, and detail tab.
Add an optional death date to any profile. The app shows a dedicated In Memoriam card with age at death, time since passing, and a yearly death anniversary reminder so you can commemorate loved ones respectfully.
Get notified on the day, 1 day before, 1 week before, or 1 month before. When several people share the same date, their birthday alerts are merged into a single notification, saving you from the iOS 64-notification limit while never missing anyone.
Built-in age calculator shows the exact age in years, months, and days for everyone, plus how many days, weeks, and months they have lived. Compare ages of multiple people on an interactive timeline with the precise difference visible at a glance.
Two home screen widget sizes. Small: birthday countdown to the next event with date header. Medium: monthly mini-calendar where every day is colored by event type (birthdays, marriages, special events, mixed) plus the next upcoming event preview.
Open the Statistics tab for full-width charts: gender breakdown, married ratio, age groups by decade, day of the week of birth, birthdays by month, marriages by month, and special events by month. All calculated offline on-device for privacy.
See every birthday, marriage, and special event on a yearly calendar with five calendar systems supported: Gregorian, Hijri (Islamic), Hebrew, Persian (Solar Hijri), and Buddhist. Tap any day to see who is celebrating.
The entire app works offline. Birthday reminders, age calculator, calendar, and statistics all run with no internet required. Export profiles to JSON for backup. Import on another device or restore from a previous backup with one tap.
All your profiles sync automatically across iPhone and iPad via your private iCloud. Apple cannot read your data, and neither can we. Disable iCloud sync entirely for fully offline operation if you prefer.
Protect your loved ones' information with a 4-digit PIN. The app cannot be opened without the code. The PIN is hashed with a per-device random salt and stored only on your device, never synced to iCloud.
English, French, Arabic (full RTL support), Spanish, Portuguese, German, Italian, Turkish, Indonesian, Dutch, Russian, Polish, Japanese, Korean. The interface adapts to your iPhone's language automatically.
Born on February 29? When you save the profile, choose to celebrate on February 28 or March 1 in non-leap years. The app handles every birthday, marriage, and special event correctly through every year.
Zero personal data collected by us. Profiles stay on your device and (optionally) in your private iCloud. Anonymous crash reports and usage buckets only. Names, emails, and contacts never leave your device. Full VoiceOver, Dynamic Type, haptic feedback, and dark mode.
Real-life situations where the birthday reminder, age calculator, and anniversary tracker all matter
Parents, grandparents, siblings, aunts, uncles, cousins, and in-laws can all live in one offline iPhone app. Add wedding anniversaries for parents and siblings. Add a special event for the day each child started school. Use the search bar to find anyone instantly.
Track your wedding anniversary with a yearly birthday countdown alongside birthdays of close family. Add a special event for the day you first met your partner. With the anniversary tracker, you'll always know how many years you've been together, down to the day.
Group friends by month using the birth-month filter. Plan your birthday wishes ahead with the smart birthday reminder system. Long-press any card on the home screen to instantly call or send an SMS, perfect for delivering a personalized message right when their day arrives.
If your family observes the Hijri (Islamic) calendar, the Hebrew calendar, the Persian (Solar Hijri) calendar, or the Buddhist calendar, DMB shows every event in all five calendar systems at once. The app's interface is also translated into 14 languages including full right-to-left layout for Arabic.
Use special events to commemorate dates beyond birthdays and weddings: the day a beloved pet was adopted, a first apartment, a first job, the anniversary of a memorable trip, or any milestone life moment. Each special event gets its own ring color, alert, and detail tab.
If you're tired of contact-syncing apps that scrape your phone book and send your data to remote servers, DMB is built differently. The app is offline-first and works without internet. Profiles are entered manually, stored locally, and synced only through your private iCloud. The optional 4-digit PIN lock means even if your phone is unlocked, your loved ones' information stays protected.
The difference between a generic calendar and a person-centric tracker
Generic calendar apps like Apple Calendar, Google Calendar, or Outlook are great for meetings, but they treat birthdays as one-off events. They miss the context: how old someone will turn (no built-in age calculator), how many years a couple has been married (no anniversary tracker), what calendar system applies (no Hijri, Hebrew, Persian, or Buddhist support), or how to handle February 29 in non-leap years. DMB is built around people, not events.
For each person, you get:
Everything you might want to know before downloading the birthday reminder
Yes. The app is completely free to download and use, with no subscription, no paywalled features, and no time limit. Ads are shown occasionally to support development. You can disable personalized ads via the consent screen at first launch.
Yes. The entire app works offline. Birthday reminders, the age calculator, birthday countdown, statistics, calendar, and notifications all work without internet. iCloud sync uses your private iCloud only when you're online.
Each profile can have up to three dates. Birthday is the day someone was born. Marriage anniversary tracks the wedding date and counts years married. Special event is for any other meaningful date you want to remember, such as a move, a first job, the day you met someone, a memorial, or an adoption day. Each event has its own ring color (blue, pink, orange), its own alert, and its own dedicated detail tab.
Yes. The built-in age calculator shows the exact age of every person in years, months, and days, plus how many days, weeks, and months they have lived. The age comparison feature also lets you place several people side by side on an interactive timeline.
Yes. Every profile shows a live birthday countdown ring with the exact number of days until the next birthday, anniversary, or special event. The home screen widget displays the countdown without opening the app.
Yes. Five calendar systems are supported: Gregorian, Hijri (Islamic), Hebrew, Persian (Solar Hijri), and Buddhist. Every birthday, marriage, and special event is shown in all five systems on the profile detail page.
iCloud sync is built in and uses your private iCloud database. Apple cannot read your data, neither can we. Sync happens automatically when you're connected to the internet and signed into the same Apple ID across iPhone and iPad. You can disable iCloud sync entirely in Settings to keep the app fully offline.
Yes. When you save such a profile, the app asks you to choose between February 28 or March 1 for non-leap years. The same option exists for marriage and special event dates that fall on February 29.
iOS limits each app to 64 simultaneously scheduled notifications. The app intelligently groups people sharing the same date and alert type into a single grouped notification (title shows the count, body lists the names), so you never miss anyone, even with hundreds of profiles.
Yes. Open Settings → App Lock and choose a 4-digit PIN. The app refuses to open without the code. The PIN is hashed with a per-device random salt and is stored only on your device. It never syncs to iCloud.
No. The app does not access your contacts and does not upload anything. Profiles are entered manually by you, stored on your device, and (optionally) replicated through your own private iCloud. The app sends zero personal data to its servers.
14 languages: English, French, Arabic (full RTL), Spanish, Portuguese, German, Italian, Turkish, Indonesian, Dutch, Russian, Polish, Japanese, Korean. The interface adapts automatically to your iPhone's language setting.
Yes, two sizes. The Small widget shows a birthday countdown to the next event with a date header. The Medium widget displays a monthly mini-calendar where each day is colored by event type (blue for birthdays, pink for marriages, orange for special events, purple for mixed days), plus the next upcoming event preview. Both refresh automatically every midnight.
Up to 512 profiles per device. Most users have 20-50, the limit is generous to handle large families and friend networks.
If iCloud sync was enabled on the old phone, simply install the app on the new phone, sign into the same Apple ID, and your profiles will appear automatically. Alternatively, use the JSON export to back up and the JSON import to restore. This method works completely offline.
Yes. Each profile can include an optional death date. When set, DMB displays the person in a dedicated In Memoriam card with age at death, time since passing, and a yearly death anniversary reminder so you can commemorate them respectfully.
Download the free offline birthday reminder, age calculator, and anniversary tracker for iOS. No account required. Privacy first. Multi-calendar. 14 languages.