Saisai D-Day: Photo Widget

Record the beautiful moments between days left and days past. Saisai D-Day is an offline D-Day app with precise date calculation, custom alarms, home screen widgets, and aesthetic customization—all without a network connection.

Why Saisai D-Day?

Offline-First: No login/sync needed. All data is saved securely only on your device. Works perfectly without an internet connection.

Precise Date Engine: Calculates D-Day (D-) and days past (D+), plus repeating events (weekly, monthly, yearly).

Smart Notifications: Get reliable reminders with presets (D-30/7/3/1/0) or custom alerts, all time-zone aware.

WYSIWYG Widget: What you see is what you get. The style you design in the app is exactly what you see on your home screen widget.

Aesthetic Customization: Create your perfect card with custom fonts, colors, photo backgrounds, icons, and stickers.

Progress Ring: Visualize your goals! Input a target and see your progress with a circular gauge. Features automatic milestone badges (100/365/1000 days).

Light Story: Add a memo and up to 3 photos to each event to capture the memory.

Share Your Creation: Share your beautifully decorated D-Day card as an image (with watermark On/Off).

Backup & Restore: Easily export/import all your events and photos as a single.zip file.

Templates: Get started quickly with presets for couples, exams, routines, or fandom events.

Organize Everything: Easily manage countless D-Days with search, sort, pin, tags, and folders.

Perfect For You If You Want To:

Manage anniversaries, birthdays, and countdowns beautifully and accurately.

Stay motivated by tracking progress for exams, workouts, or reading routines.

Keep a simple, offline list of fandom events or schedules.

Privacy & Ads

Zero data transmission. No accounts, no cloud sync. All your data stays on your device.

Ads are minimal: one fixed banner and rare full-screen ads designed not to interrupt your workflow.

Unlock extra themes/stickers by choosing to watch rewarded ads. All core features are always free.

Make every day count. Start with Saisai D-Day.