■ What is Teiten?

Teiten is a "fixed-point" photo journal: take one photo a day and watch things change over time.

Your pet growing up, a plant getting taller, meals, workout progress, the color of the sky —
build up the small changes of everyday life, one photo a day.

Look back on a calendar full of your photos, and put two photos side by side to see how much has changed.

■ Features

[Photos and One Line]
・Take a photo with the camera or add one from your library (photos taken that day come first)
・No photo today? Write a One Line card and sum up your day in a single line
・A simple rule: one photo per tag per day

[Look back on a calendar]
・A calendar that shows each day's photo, with a count on days with more than one
・Vertical and full-screen calendars for a closer look
・Let the top area shuffle through your past photos
・Tap ▷ to play a slideshow of the tag and month you're viewing

[Compare the change] (new in 2.0)
・View two photos from the same tag side by side, or switch between them
・One tap for "first & latest", "1 month ago & latest", or "1 year ago & latest"
・Share a comparison or a calendar as a single image

[Tags]
・Create your own tags with emoji icons and theme colors
・Filter by tag to see just one series

[Analytics]
・A yearly heatmap of the days you've logged
・Days logged, streaks, and monthly totals at a glance

[Switching phones] (new in 2.0)
・Back up your photos, tags, and settings into one file
・Keep it on Google Drive and restore it on your new phone
・Export all your photos to your gallery

[Peace of mind]
・Screen lock with fingerprint, face, or your device PIN (new in 2.0)
・Light and dark mode
・Reminder notifications at the times you choose
・Available in English and Japanese (new in 2.0)

■ Free and local-first

・No account needed — start right after you install
・All photos stay on your device, and the app works without a network connection
・No in-app purchases, subscriptions, or ads. Every feature is free
・Your data is never sent to any server

■ Great for

・Recording daily changes with photos
・Fixed-point records of pets, plants, food, scenery, and more
・Building a photo journal habit
・Keeping your photos private instead of in the cloud
・Leaving a one-line note about your day

■ Contact

For requests or bug reports, go to Settings → About → Contact in the app.

Privacy Policy: https://teiten.fryx404.dev/legal/privacy-policy
Terms of Use: https://teiten.fryx404.dev/legal/terms