STEP1
Build a Lasting Habit
Just 3 seconds a day. Simply choose "Good day," "Okay," or "Bad day."
No wondering what to write. Zero guilt for skipped days.
First, build the habit of recording itself.
π Limited Time - 1 Week Free
Good/
Okay/
Badβ Just choose
A diary app that shows how your "good day" changes
Just pick from 3 choices daily.
Notice, with AI, how your idea of a good day shifts.
Good/Okay/Badβ Just choose
ENDORSEMENT
Endorsed by Professors of Happiness Studies & Psychology
The "calendar circle-cross method" I described in my book 'The Mechanism of Happiness' has evolved. I sincerely hope that this app, developed by Saeki β my former student and happiness researcher β will help improve the well-being of many people.
Keeping a diary and reflecting on daily life is an effective practice for cultivating psychological richness. Translating psychological knowledge into everyday tools is a challenging endeavor, but Saeki's app shows real promise. I look forward to it enriching many people's lives.
Changes You'll Experience
Your idea of a "good day" changes without you noticing
Before
Your Current State
- Thinking "I'd be happy if only I had that"
- Getting used to things that once made you happy
- Missing the changes in your own feelings
After
Where the App Takes You
- Noticing when your idea of a "good day" has changed
- Seeing the gap between your assumptions and how you actually feel
- Valuing what makes a good day for who you are now
Your Growth Stages
Your growth journey with Triad Journal
- STAGE1
Stage 1: Building the Habit
First, form the habit. 3 seconds, 3 choices - no giving up.
- STAGE2
Stage 2: Know Yourself
Discover your values, strengths, and personality. "So this is who I am."
- STAGE3
Stage 3: Notice the Shift
Compare today with your old records and see how your idea of a "good day" has changed.
- STAGE4
Stage 4: Grow with the Change
Accept that you change, and choose the good days that fit who you are now.
Your App Experience
Here's how Triad Journal transforms your daily life
STEP2
Deeply Know Yourself
From continuous records, AI analyzes your values, strengths, and personality.
Schwartz Theory, VIA Character Strengths, Big Five.
Gain deep self-understanding based on psychological research.
STEP3
Daily Insights Support
Daily reports help you reflect on your emotions and their context.
"Why was today a good day?" "What made it just okay?"
A journaling experience with insights, not just writing.
STEP4
Notice the Shift in Your Standard
As your records build up, you can see the difference between your old "good days" and today's.
People quickly get used to good things. And "I'd be happy if only I had that" is often just an assumption β psychologists call these the hedonic treadmill and the focusing illusion.
So what matters isn't chasing a higher good-day count. It's noticing how your own standard changes. Triad Journal helps you see it.
User Reviews β¨
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An App That Deserves More Popularity
β’ You can just pick from 3 choices, or write freely - you can use it however you feel that day, so even I, who gets bored easily, can keep using it! β’ The review reports come weekly, monthly, plus special reports. Recently I received a Self-Care Report and was amazed by its content. It was a week when something sad happened that I didn't want to talk about with anyone, but the report addressed it with such heartfelt content. β’ I sent a request through the app to make reports printable, and soon after, a PDF export update was added!
β Sakura (Woman in 20s)
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Exactly What I Wanted
I think even easily-bored people can keep using this diary. When sleepy or unmotivated, you can just pick your mood from 3 choices - that's great. Personally, my favorite point is the carefully crafted UI. No ads, user-friendly, and I really love the calm atmosphere.
β Azusa (Woman in 20s)
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Accurate Advice
The app gives faithful and accurate comments based on what I wrote, which makes me want to continue. Plus, the comments are gentle with no harsh advice, making it easy to open up completely.
β Hana (Woman in 20s)
Frequently Asked Questions
Answers to your questions
Supervisor & Developer
Masao Saeki
Ph.D. A researcher in psychology and behavioral science, engaged in research on happiness and cognition. With a mission to "turn academic insights into tools everyone can use daily," he developed the Triad Journal app. Supporting your mental care with research-based logic.
Awards
- Securities Analysts Journal Award (May 2015)
- Behavioral Economics Society Encouragement Award (December 2013)
Free DownloadToward a life where you
Toward a life where you
notice how your good days change
Record in 3 seconds, AI analyzes.
Notice how your idea of a "good day" shifts and
find the happiness that fits who you are now.