Product terms · 30 September 2026

Terms

Seller and data controller: Vidun Wedagedera, trading as nika. Storeys Way, Churchill College, CB3 0DS, United Kingdom. Email: nika@vidunwedagedera.com.

Paid plans and credit packs are currently sold to UK residents only. Downloads remain available worldwide. nika is not VAT-registered; no UK VAT is charged. Prices below are the total in pounds sterling, with no delivery charge.

What you are buying

nika is downloadable study software that turns supported text, screenshots and PDFs into editable Anki cards. It includes local card review and personalisation. AI generation requires an account, internet access and available credits. The current Mac build requires Apple silicon and macOS 14 or later; the Windows build is for x64 Windows. Direct delivery to Anki needs Anki desktop and AnkiConnect. Review AI output yourself: it can contain errors and is not clinical advice. English is the language of the service and these terms. Beta downloads may display operating-system security warnings.

Eligibility and privacy

You must be 18 or over. Keep your account secure and use only content you are entitled to process. Do not submit personal or patient data, share credentials, resell access or misuse the service. You retain your rights in your content. Local personalisation and optional shared-model training are separate: sharing is off by default, and refusing it does not reduce your plan. See the privacy information.

Plans and credits

The free trial lasts seven days and includes 100 credits once, up to three completed source generations and 20 PassMedicine AI mistake generations within the same balance. No payment card is required and it does not automatically become a paid subscription.

Student costs £9.99 per month with 250 credits. Pro costs £24.99 per month with 700 credits. Each renews monthly until cancelled. Included credits reset on the billing anniversary without rollover. Packs cost £4.99 for 100 credits or £19.99 for 500 credits; purchased credits carry forward while the account remains open. Included credits are used first. Credits are not transferable or redeemable for cash, except where our refund policy or your legal rights apply.

All plans include Instant, Medium and Advanced. Per job, the trial allows 10 selected PDF pages, a 10 MB PDF, 5,000 pasted characters or one image; Student allows 100 pages, 50 MB, 50,000 characters or five images; Pro allows 300 pages, 100 MB, 150,000 characters or 20 images. Trial and Student allow one concurrent job; Pro allows two. Larger sources and deeper processing use more credits: these file limits do not promise that a document will fit your balance. Without a subscription, purchased credits use trial-sized file limits but are not limited by trial expiry or trial job counts.

Credits measure AI work, not a fixed number of cards. We reserve the task budget you approve, then settle measured use after a completed result is saved. Failed or undelivered results do not spend customer credits. A task may pause at its budget limit; it never silently purchases more credits. Manual editing, deleting, review, export, image-mask adjustments and local personal learning do not spend AI credits. Requested AI generation and refinement do. Completed cards remain available locally after a subscription or trial ends; keep your own backups.

Ordering and access

Choose a plan or pack in your account, confirm UK residence and review Stripe Checkout. Enter your usual UK home address in its address section; nothing is posted. Correct any mistakes or return to your account before paying. Stripe shows the amount and renewal interval before confirmation. By requesting immediate access, you keep the refund policy below: using the service does not waive it. Access follows verified payment, normally within a few seconds. If it does not appear, refresh your account or contact support instead of paying again. Payment confirmation and billing documents are available through Stripe.

Changes and cancellation

Use Manage billing to change a plan, update payment details, view invoices or cancel future renewals at any time. Cancellation takes effect at the end of the paid period, with access retained until then. If billing management is unavailable, email support to cancel. There is no cancellation fee.

For the new credit plans, upgrading charges the full difference between the monthly prices and increases the current period's total allowance by the full difference, without resetting used credits or extending the period. The next renewal uses the new price. Downgrades apply at period end. Stripe shows the amount and effective date before confirmation. Existing subscriptions retain their agreed prices, allowances and change terms unless the customer explicitly chooses a new plan.

14-day refund policy

Tell us within 14 days of your first subscription purchase or any credit-pack purchase and we will provide a full refund, even if you have started using it. No reason is required. Email nika@vidunwedagedera.com from your account email with the purchase date or receipt reference. We will issue the refund within 14 days of your request, to the original payment method, without a refund fee. A first-subscription refund also cancels future renewal. Later routine renewals are not automatically covered by this goodwill offer; your statutory cancellation, refund and faulty-service rights are unaffected.

A full subscription refund removes the refunded paid allowance; refunded packs reverse their own credits. No extra charge is made for credits already used. Partial goodwill refunds do not reduce subscription allowance. A pending full refund or payment dispute can temporarily pause the affected paid allowance; a failed refund or a dispute resolved with payment retained by nika restores it. Separately purchased balances and saved local cards are not deleted because of a subscription refund.

Cancellation form

You may use this form, but an ordinary email is sufficient: To Vidun Wedagedera, trading as nika, at the address or email above. I give notice that I cancel my contract for [subscription or credit pack]. Ordered on [date]. Name [name]. Account email [email]. Address [address]. Date [date]. Signature [only if sent on paper].

Problems and complaints

Contact nika@vidunwedagedera.com with your account email and a description of the problem. Do not send passwords, card details or sensitive study material. We will investigate and explain the available remedy. Nothing in these terms excludes your statutory rights or limits liability where the law does not allow it. If the service cannot be supplied as agreed, contact us for the remedy to which you are entitled.

This dated page is retained so you can bookmark or print the terms that applied to your purchase.