For certified Billings Ovulation Method instructors
Corvia is a Billings-faithful charting app with an instructor portal that respects your role, your method, and your students' privacy. Read-only. Audit-trailed. Yours to trust.
Request your instructor codeCorvia is built to the Billings Ovulation Method as it is actually taught. Not to an approximation of it.
The color system on the chart is the WOOMB-standard system, locked at algorithm version 1.1 in May 2026. Green for dry, yellow for discharge infertility, white for possible fertility, red for bleeding. Post-Peak days 1, 2, and 3 are observation-dependent so you can read the luteal mucus pattern at a glance. Day 4 and beyond is infertile-colored regardless.
Peak Day is user-confirmed only. Corvia will never assign a Peak Day for a student without asking her. When a student logs a dry or sticky day after a slippery day, Corvia asks: was yesterday your last slippery day? Her answer determines whether Peak is stamped. That is how you teach it. That is how it works.
There is no forward ovulation prediction. There is no algorithm applying Rules 1 through 4 to a student's data. There is no availability output. There is no black box between the student and her own observations. The interpretation is where it belongs: with the student, and with you.
The instructor portal is a separate app at portal.corviacycle.com. Desktop-first, tablet-safe. Read-only, always. Zero write access to any observation.
When a student shares her chart with you, you get a link. Seven-day expiration. Fully audit-trailed. Every view is logged, on both sides. When the seven days end, the link is dead. If she shares again, it is a new link, new expiration, new audit entry.
The intercourse row is absent from the DOM if she did not include it in that share event. Not hidden. Not greyed out. Absent. Each share is its own consent event.
When you are verified as a Corvia instructor, you receive a six-character alphanumeric referral code. Students enter it at signup. From that point on, your name appears in their profile as their linked instructor, and new students appear in your portal automatically.
The code doubles as an affiliate identifier for a future revenue-share program with instructors. That program is not live yet. When it is, your students' subscriptions will already be linked to your code, and the affiliate flow will activate retroactively. You do not need to do anything now to be ready.
Corvia is a cycle charting and wellness education tool. It records what a student observes and displays it faithfully. That is where its work ends.
Corvia will never output a fertility status. Corvia will never tell a student when to abstain or when to have intercourse. Corvia will never apply Rules 1 through 4 or any BOM rule algorithmically. Corvia will never predict ovulation forward. Corvia will never claim the certification your training gave you.
Your role is not automated away by Corvia. It is protected by Corvia's design.
Verification is manual right now
We review each application personally and follow up by email.
BOMA-USA: Outreach in progress. Listing not yet active.
WOOMB International: Formal outreach not yet initiated.
Billings LIFE (Australia): Not yet contacted.
We update this section every time an affiliation changes state. If a relationship is not listed here, it does not exist yet.