Keep a moment
A photo, a short video, your voice, or just a few words. One tap, and it's kept.
keep today for someday
Some days you want to keep.
Someday is a quiet place to keep the moments that matter, send letters to your future self, and meet the person you used to be. No account. No feed. Everything stays on your phone.
Free, with no ads. Android first; iPhone later.
Someday: Moments & Letters is a private app for keeping moments, writing letters to your future self, and meeting who you were.
- Price
- Free, no ads
- Phones
- Android (coming soon) · iPhone later
- Account
- None needed
- Your data
- Stays on your phone
- Languages
- English · 中文 · Español · 日本語
How it works
Today, someday, and the person in between.
Three quiet things, done well. Keep what matters now. Send something to who you'll be. And let the past find you, now and then.
Send something to Someday
A letter to your future self, sealed until the day you choose. Even you can't open it early.
Meet yourself
A moment from this day in an earlier year. Once a year, your year as a night sky.
Keep
A moment, kept in a single tap.
Take a photo, hold for a short video, say something, or just write. A feeling and a few words can follow — never required.
- A voice can play right on the photo it belongs to.
- Forgot something? Keep it for the day it happened.
- Old photos keep the day they were taken.
Send
Write to who you'll be. Seal it.
Write a letter — or say it in your own voice — and choose when it opens: in a year, in five, in ten, on a birthday, or "when" something happens.
- Hold to seal. Once sealed, even you can't open it early.
- Keep a moment with it, to open together.
- A gentle notification on the day it's ready.
And one day
It finds you.
"Your past self sent you something." Hold the letter to break the seal, and your own words arrive from another time. Keep it with your moments, or let it go.
Meet yourself
The past comes back on its own.
Now and then, a moment from this day in an earlier year appears on Home. And once a year, your whole year as a night sky — a star for each day you kept something, lighting up from January to December.
- A calendar of your days; pinch Home to open it.
- "This day, every year" — swipe from day to day.
Calm, not addictive
No streaks. No likes. No feed. Someday never counts your days or asks you to come back.
No adsNo scoresNo followersNo endless scrollingNo guilt
Private by design
Yours, and only yours.
There's no Someday account and no Someday server. What you keep lives on your phone, and we never see it. Read the privacy policy — it's short.
No account
Nothing to sign up for. Open it, and keep your first moment.
On your phone
Moments and letters stay in Someday's private space on your phone, protected by its own encryption.
No tracking
No ads, no analytics, no trackers — in the app, or on this website.
Locked backup
One file of everything, sealed letters too, encrypted with a 24-word recovery key only you hold.
Take a copy
Every photo, video, voice and word in a folder you can open anywhere, no app needed.
Lock it
Ask for your face, fingerprint or phone passcode before Someday opens.
Made to feel like yours
Quiet by day. Lamp-lit by evening.
Two looks — Dusk and Zen Garden — that can follow your phone or the time of day. Home the way you like it: a Timeline, a Wall, or a Thread.
Four languages
English, 中文, Español and 日本語 — following your phone, or your choice.
Gentle by default
Notifications only for a letter that's ready, and — if you turn it on — a moment from the past, at most once a month.
Shortcuts
Long-press the app icon to keep a moment or send something, straight away.
The film
Fifteen seconds of Someday.
Write to who you'll be. Seal it for someday. Let time pass. And one day, it finds you.
Questions
Good to know.
Is Someday free?
Yes — free, with no ads and no subscription. If it becomes part of your life, you'll be able to support it with a small tip in the app. That's never required, and Someday will only mention it rarely.
Where are my moments kept?
On your phone, in Someday's private space. There's no Someday account or server, so we never see what you keep. Your moments leave the phone only when you make a backup or a copy yourself.
What if I lose or change my phone?
Make a locked backup now and then, and keep it somewhere safe — a computer, or a cloud drive. On a new phone, bring it back with your 24-word recovery key. Without a backup, a lost phone means lost moments, so we'd gently suggest making one.
Can I open a letter early?
No. Once sealed, a letter stays sealed until its day — even for you. That's the promise that makes opening it feel like something.
Will Someday keep reminding me to use it?
No. There are no streaks, no daily nudges and no "you haven't posted in a while". Someday only tells you when a letter is ready, and — only if you turn it on — lets a moment from an earlier year find you, at most once a month.
Can I take everything out?
Yes. "Take a copy" puts every photo, video, voice and word in a folder you can open anywhere, no app needed. Letters still sealed stay sealed.
Which phones does it work on?
Android first — coming soon to Google Play. iPhone is planned for later.
Which languages?
English, Chinese (中文), Spanish (Español) and Japanese (日本語). Someday follows your phone's language, or the one you choose.