The viral coefficient calculator estimates K, the number of new users each user brings: invites sent per user multiplied by the share of invites that convert. If K stays above 1, growth can compound; below 1, it fades. The results are educational only, not a prediction.
Want the full rule behind this tool? Read Design a referral loop with no email signup.
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K ≈ (invites each user sends) × (conversion rate of those invites). If K stays above 1, growth can compound. Educational only, not a guarantee of results.
ViralRefer is designed so the “invite” is a free shareable link (no signup wall) and conversion is “friend gets their free link through you.” Improve K by: clearer message, better channel fit, and following up after share, not by spam.
Run your free loop on ViralRefer → Get my referral link →K-factor is a common way to reason about referral loops. The calculator projects users over a few cycles from your inputs so you can see how small changes in invites or conversion add up. It uses only the numbers you type.
With 2 invites per user and a 30% conversion rate, K is 2 times 0.3, which is 0.6. Each cycle adds fewer new users, so growth slows down.
No. It is a simple model of the numbers you enter.
A friend tapping Get my link through your link.
Clearer messages, better channel fit and one polite follow-up, not spam.
Each user brings about one new user, so the group roughly holds steady. Above 1 it can grow, below 1 it shrinks over cycles.
No. It only uses the numbers you type in.
No cash prize. Open worldwide, 18+. Official rules.