Every dynamic has a shape.
The KDI is a personality instrument for power exchange: 48 questions, four independent axes — power, sensation, channel, structure — and 16 archetypes written to equal depth. Spectrum scores, with a safety profile in every result.
Anonymous by design — answers are scored in your browser and never leave it.
What it measures
Four independent axes, each read as a split between two equal poles — not one ladder. A sample result is marked on each.
Who steers the dynamic
Which way intensity flows
Where the scene lands
The shape of the scene
When the split lands near even — neither pole above 64% — the axis reads as Switch: flexibility is a result, not a failure to decide.
Ads that open with a measured type.
A free personals board where every ad carries the poster's KDI reading, their four axis splits, a photo and direct contact details. Read the compatibility before you write the message. 18+, no accounts, every ad human-reviewed.
Take the KDI first — your result carries the posting link, and this browser remembers it so you only take it once.
The 16 archetypes
Written to equal depth. No "cooler" types — the score is the truth, the letters are shorthand.
Two results. One read.
Paste two result links and get the pairing read from both partners' real scores — chemistry axis by axis, a structural fit tier, and the exact conversations to have before you play. Computed, not guessed.
Open the Pairing Explorer The Library The measurement model