Policy
Billing
Effective August 27, 2026
Plans and renewal
- Free: US$0, including 20 Learn questions each day and three hints each month.
- Pro: US$4.99 per month, including no ads, unlimited Learn, topic and difficulty controls, saved vocabulary and learning history, and unlimited hints.
Pro is the only paid plan currently offered. It is a monthly subscription in US dollars with no trial. Stripe processes payment, and the subscription renews until it is cancelled.
Premium is a retired legacy plan. Existing Premium subscriptions and complimentary grants keep their access and billing history, but new Premium subscriptions are not offered.
Cancellation
Manage or cancel a paid subscription through the Stripe Customer Portal linked from your Lexifour account. Cancellation stops the next renewal and paid access continues through the already-paid period. Cancelling a subscription does not delete your Lexifour account.
Refunds
Payments are generally non-refundable, subject to applicable law. Contact support@lexifour.com for a billing error; verified billing errors may be reviewed for a case-by-case refund.
Failed payments
A failed renewal starts one seven-day grace period. Paid access continues during that period. If payment is not recovered, the account downgrades to Free after the grace period. Successful recovery automatically restores the paid tier.
Taxes
Lexifour is not currently registered for Canadian GST/HST or British Columbia PST. Stripe automatic tax is disabled, and Lexifour does not currently collect those taxes. This status will be reviewed before collection is enabled or when registration obligations apply.
Account deletion and records
An active subscription must be cancelled before a Lexifour deletion request can complete. Stripe may retain transaction records required by law or its own policies even after Lexifour removes account data. See the Privacy policy for details.