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Ksarfr

Solution · Free trials and credits

Keep your free trials and credits for real users.

For SaaS and AI tools: every fake account burns servers or credits that cost you real money.

The problem

  • 01

    The same person chains free trials with different addresses.

  • 02

    Every free account burns AI credits or compute billed by your providers.

  • 03

    These accounts never convert: your conversion rate is skewed.

How Ksar solves it

The same person, recognised

Gmail dots, +aliases, equivalent domains: Ksar sees it is the same mailbox.

Series detected

jean1, jean2, jean3… serial signups are spotted within a time window.

Credits granted at the right time

For a privacy relay, credits wait until the address is confirmed (hold mode).

Example settings

See it in action

Rules are set per customer, without code, from the dashboard or the API:

Run the 3 tries of the guided demo, on a shop that looks like yours.

PUT https://api.useksar.com/v1/settings
{
  "duplicate_policy": {
    "exact": "deny_offer",
    "series": "defer",
    "series_window_hours": 24
  },
  "privacy_relay_policy": "defer",
  "deferred_release_conditions": [
    "email_verified"
  ],
  "offer_profiles": {
    "free_credits": {
      "offer_value_eur": 2
    }
  }
}

Protect your signups today.

Free API key instantly, no credit card. Or ask us for an audit of your signups.

Other use cases