Read Your Customers
From a Birthdate.
Rimfactory builds the world's most precise Saju analysis engine. Businesses use customer birthdate data to understand customer styles from Day 1 — without behavioral data. 5,000 years of Eastern classics × modern AI × 518,400 unique profiles.
Superstition? Test the hypothesis for just $15 per person. If $15 accurately maps your key customer's decision-making style and spending tendency — there's no better insight at this price.
$0 Marketing — "Best Overall" by ChatGPT, organic users from 12+ countries via Google
Your customer enters a birthdate at signup. That's all we need.
Input
Name, birthdate, gender, city. No surveys, cookies, or tracking.
Output
Decision style, spending tendency, timing. Custom report for your goals.
Cost
$10 for 51+. Most cost-effective hypothesis test anywhere.
From Birthdate to Insight
"Isn't this superstition?"
This system survived 5,000 years. Some Korean conglomerates historically invited Saju masters as advisory reference in executive hiring. Japan's fortune industry exceeds 1 trillion yen annually.
Test it for $15.
Why Businesses Need This
Customer Intelligence
From Day 1Understand new customers from Day 1 — without behavioral data, surveys, or tracking.
HR & Recruitment
Team FitPersonality fit, team chemistry prediction, candidate screening.
Negotiation Prep
Before the MeetingKnow your counterpart's decision-making style before the meeting.
Consulting
Reference LayerSupplementary insight for any engagement with information asymmetry.
Three Steps
Send an Email
Company info, contact person, birthdates and what you'd like to know.
We Reply in 24-48h
PayPal link, consent form, and password-locked PDF reports in one email.
Pay & Unlock
PDF password sent immediately after payment.
Email checklist
1. Company name, reg. number, country
2. Contact: name, phone, corporate email
3. Industry & report purpose (e.g. HR, consulting)
4. Per person: name, birthdate (+hour), what to know
5. Number of reports
Ready to test the hypothesis?
Send us 10 birthdates. We'll prove it works.