On-Device by Default
Relationship scoring, drift detection, and the Social Garden all run entirely on your device. No data is transmitted to any server for core functionality.
Privacy
User trust is the primary growth lever at Kizunae. Privacy is not an afterthought — it's a first-class product requirement, built into the core architecture from day one.
"We never read your messages.
We never record your calls.
We only look at when and how often you connect — never what you say."
Data Transparency
Nothing we store requires reading your conversations.
| Data Point | How Stored | Why It's Needed |
|---|---|---|
| Contact display name | Plaintext, locally only | So you can recognise who Kizunae is referring to |
| Phone number | SHA-256 hash — never plaintext | To deduplicate contacts across call history without storing the number |
| Call timestamp | Unix timestamp, locally only | To calculate recency and drift detection |
| Call duration | Seconds, locally only | Longer calls indicate more intentional contact — used in scoring |
| Call direction (in/out) | Boolean, locally only | Bidirectional communication is weighted differently than one-sided |
| Contact label (optional) | User-set string, locally only | Allows personalised weighting (Friend / Family / Work) |
| Importance weight (optional) | Integer 1–5, locally only | Let you tell Kizunae which relationships matter most to you |
Processing Model
Onboarding Trust Screen
The Trust Screen is mandatory during onboarding — there's no way to skip it. It explains in plain language what we collect, what we don't, and what happens to your data.
Before we begin, here's what Kizunae does — and doesn't — see.
Common Questions
Start reconnecting — privately.
Privacy-first · On-device scoring · Free to start