PartnerCheck

ShadowHub

In-app purchases

About this app

PartnerCheck — Coincidence does not exist

Every person has a phone number. The last 6 digits become a unique color—the outer layer, the self you show the world. Reverse those digits and a second color appears: your inner shade, tied to mood, temperament, and hidden meaning.

PartnerCheck turns that idea into a playful way to explore the people in your life.

How it works

Add contacts from your phone or enter them manually
Each contact gets two colors: outer (surface) and inner (reversed digits)
Swipe through contact cards and reveal both layers
Feel a vibration when colors align between two people
Pick anyone as your anchor and sort the whole list by compatibility
Heart the people who matter and focus on your favorites
Find your best matches Choose any contact, tap the chart icon, and the list reorders by match strength. Outer-to-outer, inner-to-inner, and cross-layer matches all count—so the strongest connections rise to the top.

Private by design

You choose which contacts to add—nothing is loaded automatically
Data stays on your device
Read-only contact access
Phone numbers are used only to calculate colors and are not stored

Does it match, or not? Download PartnerCheck and find out.

What’s new

You can now play Tetris with your selected colors, or see them visualized in action. Share the current combination with others.