How It Works

Navilla is a private sexual health companion. It gives you tools to track your encounters, monitor your testing history, manage partners, and see anonymized exposure signals from your network — all encrypted and under your control.

Some features are free and require no account (testing calculator, STI guides). Others — like the encounter journal, health log, and exposure network — require a free account so your data can be stored securely.

A private, encrypted timeline where you log your sexual encounters. Only you can read it.

• Log encounters with dates, partner aliases, and personal notes
• Add custom fields like protection used, mood, or location
• Switch between timeline view and calendar view to see your history from different angles
• Use the calendar to quickly jump between months that have entries
• All journal data is encrypted with AES-256-GCM before it reaches the database

When you use the same alias across multiple journal entries, Navilla can promote that alias to a named partner — giving you a dedicated view of your history with that person.

• Each partner gets a detail page showing all encounters, notes, and a timeline
• Add private notes to any partner (visible only to you)
• See encounter counts and date ranges at a glance from the Partners tab

Partner data is encrypted the same way as journal entries. Navilla never shares partner information with anyone — not even the partner themselves.

Track every STI test visit in one place. Know exactly where you stand and what to test for next.

• Log test visits with date, lab, and results per condition
• Save your labs (clinic name, location) for quick reuse on future visits
• See your full testing history organized by condition — with status, result values, and reference ranges
• Track your coverage: how many of the 10 most common STIs you've been tested for this year
• See days since your last test at a glance from the health log dashboard

When you connect with other Navilla users and they report a health status, you see anonymized exposure signals — never names or identifying details.

Connections are stored as cryptographic hashes. Your network extends up to 5 degrees: if you're connected to Ana and Ana is connected to Luis, Luis is in your 2nd-degree network.

If you have fewer than 3 connections, exposure data is hidden entirely. With only 1 or 2 connections, a signal could reveal a specific person's status. The 3-connection minimum protects everyone.

Exposure signals are useful but have limitations:

• Exposure does not mean you are infected — it means someone in your extended network reported a condition
• Data is self-reported and may be delayed or incomplete
• The network only includes Navilla users — your real-world exposure may differ
• Exposure updates in delayed snapshots, not in real time, to prevent timing-based inference

These tools are available to everyone, no signup required. No data is collected.

• Testing timing calculator — enter a date and see exactly when each STI test becomes reliable based on window periods
• STI guides — clear, plain-language guides on 10 common conditions covering symptoms, testing, and treatment
• Testing cost reference — estimated costs for STI testing at clinics in Mexico

Privacy is not a feature — it's the foundation everything is built on.

• All sensitive data (partner names, notes, health records) is encrypted with AES-256-GCM before reaching the database
• Each user has a unique encryption key derived from a master secret
• We never show names, usernames, or emails of people who report health conditions
• We do not use third-party tracking, analytics SDKs, or advertising networks
• We are working toward full end-to-end encryption where the server cannot read your data at all

Read the full details on our Security page

• View all your data — journal, partners, health log, connections — at any time
• Edit or delete any individual entry, partner, or test visit
• Add or remove connections freely
• Delete your account and all associated data permanently
• Request an export of your personal data