Frequently Asked Questions

Managing your collection is free – and stays free. Add coins, upload images, sort, export, share — all without paying a thing.

For AI-powered analysis you need credits. You start with a 25-credit welcome bonus, after that you get 1 credit free every day. Packs start at €2.99 for 12 credits. Pricing in detail →

The app is currently in German. An English version is in development – the website is already available in English.

• ✓ Add & edit coins manually
• ✓ Upload images & remove backgrounds locally (no AI)
• ✓ Filter, sort and search your collection
• ✓ Create sets & a wishlist
• ✓ Statistics, charts, maps
• ✓ Share links & public sets
• ✓ Tag management & storage locations
• ✓ CSV & PDF export of your collection
• ✓ GDPR data export including all images
• ✓ Duplicate check via image fingerprint (local, no AI)
• ✓ Numista import (read-only)
• ✓ Feature voting & community
• ✓ 1 free AI credit every day

• 1 credit – Quick Identify · Condition grading · AI duplicate check
• 4 credits – Full analysis
• 3 credits – Re-analysis (1× free within 24 h)
• 12 credits – AI research (Numista + web search)
• 4 credits – AI set suggestions
• 2 credits/coin – Batch capture (several coins from one photo)
• 3 credits/coin – Bulk AI for your whole collection

The button in the app always shows how many credits an action costs before you start it.

What you pay for credits goes straight into what makes NumisCAN possible:

• ~30% AI processing (the AI request itself)
• ~20% payment processing + VAT
• ~50% servers, backups, ongoing development, support

No ads, no tracking without consent, no third-party marketing.

Purchased credits expire 36 months after purchase. Subscription refill credits are likewise valid for 36 months from each refill. The daily free credit (1 credit/day) is valid for that day only – use it or lose it.

Yes, at any time, effective at the end of the current period, with no minimum term. You keep the service until the end of the period you've paid for; after that, nothing more is charged. Credits already added to your account remain valid for the normal 36 months.

If an AI result was objectively poor (e.g. "not identified"), just drop us a quick email – we review every case manually and refund the credits. Also: the first re-analysis within 24 h of a full analysis is free (quality guarantee).

A wide range of numismatic objects: circulation coins, commemorative coins, medals and tokens – from antiquity to the present day, from all countries and eras.

German coins (euro, Deutsche Mark, Reichsmark), gold and silver coins and standard international issues are identified particularly well. For rare or damaged pieces, you can ask the AI to do additional research.

NumisCAN provides the basic data for a valuation: identification, mintage, material, grade and catalogue references. For a professional valuation, take this data to a numismatist or auction house.

Especially useful for heirs of collections, estate inventories and insurance documentation. For commercial valuations, see Professionals & businesses.

Yes. You can import your existing Numista collection with the OAuth wizard. After the import, Bulk AI Review lets the AI check and refine all your coins (costs credits per coin – you stay in control of how many are used).

Have the AI check an entire collection in one go. For each coin, a confidence indicator shows how sure the AI is about each field – accept with one click or edit manually. Ideal after a Numista import or when you want to tidy up a collection that has grown over the years.

Sets are defined coin series you want to complete (e.g. "€2 commemoratives – German federal states" or "Austrian circulation coin set"). The matrix view shows at a glance which pieces are still missing.

Community sets are templates created by other collectors – simply adopt them instead of defining your own. You can share your own sets with the community, too.

Accuracy depends on image quality, condition and how well known the coin is. Standard issues (euro, common gold coins, German classics) are usually identified very reliably; rare or heavily worn pieces may need an additional research request.

When the AI is unsure, it tells you with a confidence note. You can edit every field before saving or correct it later – the AI's answer is never the final word.

A normal smartphone camera is perfectly fine. Good lighting (daylight or a bright lamp), the coin filling the frame, sharp and on a plain background – that's when the AI delivers its best results.

To capture a mixed lot, you can also photograph several coins in one picture – the AI identifies each one individually and crops it out automatically.

A multi-step comparison: when you add a coin, NumisCAN uses an image fingerprint (local, free) to check whether a visually similar piece is already in your collection. Metadata (country, year, denomination) is compared as well. Optionally, the AI can run a deeper comparison against all your specimens (1 credit).

The provider and your contractual partner is KAPELAN Medien GmbH (Germany). Managing director and developer is Christian Gothe. Full provider details are in the Legal Notice.

Payments are handled by Mollie (Netherlands, EU). Available methods: SEPA Direct Debit, credit card (Visa/Mastercard), PayPal. After every purchase you receive an official invoice showing VAT by email. Credit purchases are currently available for billing addresses in the EU and the USA.

Yes. Servers in Germany, KAPELAN Medien GmbH as the data controller, data processing agreements with our service providers (Mollie for payments, Anthropic for AI). Data export (Art. 20 GDPR) and account deletion (Art. 17 GDPR) are available free of charge at any time in the settings. Details in our Privacy Policy.

Yes – at any time and free of charge. CSV and PDF export of your collection in the settings, plus a complete GDPR data export with all images and invoices as a ZIP file. No lock-in, no waiting period, no premium account needed.

Your personal data is anonymised. Unused credits expire without refund – so use them up first. We are required to keep accounting records (invoices) for 10 years under Section 147 of the German Fiscal Code (AO), but they are pseudonymised.

We use a leading large language model: since October 2026, every AI request – from Quick Identify to research – runs on one current top model, the highest-quality model we know of for image analysis. Other apps often use cheaper or in-house models – we invest in quality.

No. Under its standard contracts, our AI provider does not use API requests for training. Your images are only passed on for the respective AI request and are not stored for model improvement.

Background removal runs locally on our server using an open-source library (rembg) – so no AI API call is involved and it's free. You can remove backgrounds as often as you like.

By default, only the technically necessary session cookies for logging in – no Google Analytics. Marketing tools such as the Meta Pixel are only loaded if you agree in the cookie banner; without your consent there is no tracking. More in our Privacy Policy.

Yes. There is no difference in features between private and business use. When you sign up, you simply state whether you use NumisCAN privately or for business – this only helps us talk to you in the right way. You'll find more details on the overview for professionals & dealers.

Yes. Every purchase automatically generates a PDF invoice from KAPELAN Medien GmbH with all details required under Section 14 of the German VAT Act (UStG): VAT ID, VAT shown separately at the applicable rate (19% in Germany), unique invoice number. The invoice is sent by email and is available in your account. Input VAT can be deducted like any other business expense.

Yes, that's what bulk analysis is for. You photograph the coins once, the AI works through them one by one and sorts them by country/period/value. Costs scale linearly with the number of coins – for a lot of 100 coins, plan on the Power pack (€59.99/330 credits). Initial review and pre-selection take hours instead of days.

Yes. Collection exports are available as CSV (Excel-compatible, UTF-8 with BOM for special characters) and as PDF (with images, descriptions, valuations). CSV is ideal for further processing in your own appraisal tool, PDF for sending directly to clients or insurers.

Currently, each collection is tied to one account – several employees may share the login details if needed (which we accept but don't actively promote). Proper multi-user collections with roles are on the roadmap. If you need this: email support – if several clubs/dealers ask for it, we'll move it up the list.

Yes. In the app's feature voting area you can submit feature requests and vote for other suggestions. For features that matter to you, you can also commission feature sponsoring from €100 – this speeds up development and you get credits added to your account in return.

Of course. Collection management is completely free. You can use your daily AI credit every day, for example for a Quick Identify or condition grading. It renews daily at 00:00 UTC and cannot be saved up. For occasional collectors, that's often all they need.

The best way is to use NumisCAN – buy packs or subscriptions when you need AI, or sponsor features. If you'd still like to donate without getting anything in return, you'll find Buy Me a Coffee and GoFundMe links on the Support us page – entirely voluntary.