Your day,
in 3 seconds.
Morning, day, evening. Three moments become one 3-second video. A journal you shoot, not write.
Tridi is a local-first journaling app that captures your day as three moments and composes them into a 3-second vertical video.
RULE OF 3 : 3 : 3
Three times a day, one shutter each.
One photo or one 3-second clip per time slot. That's all. Missing a slot is fine — an empty slot is still part of your day.
Morning
05:00 – 11:59
The first scene you meet. Coffee, the window, the commute — anything.
Day
12:00 – 17:59
The middle of it all. Lunch, work, a walk — the temperature of today.
Evening
18:00 – 04:59
As the day winds down. Fill the third slot and your 3 seconds are complete.
HOW IT WORKS
Shoot, and your day becomes a film.
01
Capture a moment
Tap a time slot and the camera opens. What you see is what you get — retakes welcome.
02
Fill three slots
The moment morning, day, and evening are all in, the app starts weaving your day.
03
Keep 3 seconds
A 9:16 vertical video where three moments play at once. Saved to your photos, ready to share.
LOCAL FIRST
No account. No server.
Everything is stored on this device only. Tridi never uploads your photos or videos. They're also saved to a 'Tridi' album in your photo library — that's your backup.
PRICING
Journaling is always free.
Your past records are never locked behind a paywall.
Tridi
Free
- 3 slots a day (photo · 3-sec clip)
- Automatic 3-second composition
- Calendar & column archive
- Auto-save to photo library
Tridi+
$1.99 / mo · $16.99 / yr · $36.99 lifetime
- Watermark removal
- Original clip storage
- Yearly recap film
- Every future plus feature
Cancel anytime. Payments are handled by the App Store and Google Play. Prices may vary by region.
FAQ
Frequently asked questions
What is Tridi?
A daily journaling app that captures your day as three moments — morning, day, evening. When all three slots are filled, they become one 3-second vertical video. No account; everything stays on your device.
How is it different from a journaling app?
There's no writing. One photo or one 3-second clip per slot, and the app weaves the day for you. Journaling becomes a single press of the shutter.
How is it different from 1 Second Everyday?
1SE stitches days into a long montage. Tridi splits one day into three, so each day is its own complete 3-second film — built for the daily sense of completion and the archive.
Where are my photos stored?
On this device only. Nothing is uploaded. Recordings are also saved to the 'Tridi' album in your photo library — when you switch phones, the album travels with your photo backup.
What if I miss a slot?
That's fine. The empty slot stays as the color of its time of day. We think an empty slot is a record, too.
Is it free?
The core journaling features are all free. Tridi+ adds watermark removal, original clip storage, and a yearly recap — and your past records are never locked either way.