1. Who we are
Themys is currently operated as a free, unincorporated beta by its founder, who is the other party to these Terms. Full operator details — legal name, address and registration numbers — will be published on this page before Themys charges for the service, and you will be asked to accept the updated Terms at that point. Until then you can reach us at hello@themysapp.com.
By creating an account you agree to these Terms. If you do not agree, do not create an account.
2. What Themys is
Themys is a tool for creating, storing and delivering business documents — contracts, invoices, project records and related files — and for tracking the work behind them.
You supply the facts. Themys arranges them into a document, keeps it, and helps you get it to your client.
3. What Themys is not
These limits are part of the service you are agreeing to, not fine print:
- Themys is not a qualified trust service provider. Themys can send a contract for electronic signature, described in section 7. Those are *simple* electronic signatures: we do not check anyone's identity documents and we do not issue qualified certificates. Whether that is enough for a particular contract is your decision, not ours.
- Themys does not give legal advice. Contract text, clauses and templates — including anything generated with AI assistance — are drafting material, not advice. They are not reviewed by a lawyer and are not tailored to your situation or jurisdiction.
- Themys does not give tax or accounting advice. Tax rates, VAT settings, set-aside figures, profitability and ROI numbers are calculated from values you enter and assumptions you choose. They are estimates for your own planning. They are not a compliance calculation, not a tax return input you may rely on, and not a statement that any document satisfies the invoicing rules of your country.
- Themys is not your record of account. We are not an archive of record, a bookkeeping system or a statutory retention service. You remain responsible for keeping your own copies of every contract and invoice, including signed contracts and their signature records, for as long as the law in your country requires — commonly ten years in Slovakia and the Czech Republic, six in the United Kingdom, and varying elsewhere.
- Themys does not process or verify payment. We do not collect, hold, route or confirm any payment between you and your client. You send your invoice yourself and record payment yourself. Statuses such as "sent", "paid", "overdue" or "cancelled", payment dates, and any payment QR code embedded in an invoice are generated from what you enter. Nothing is reconciled against a bank. A document marked paid in Themys is a note you made, not evidence that money moved.
4. Your documents are your responsibility
This section is the core of the agreement between us. Read it.
You are the author of every document you create with Themys. You decide what it says, you check it, and you choose to send it. We provide the tool that assembles it.
Before you send, export, share, send for signature or otherwise deliver any document, you are responsible for reviewing it in full and confirming that it is correct and complete — including:
- amounts, quantities, unit prices, totals, currency and rounding
- VAT and other tax rates, tax identification numbers, and whether the document meets the invoicing requirements that apply to you
- invoice numbering and its continuity
- names, addresses, registration numbers and bank details of both parties
- issue, delivery, supply and due dates
- bank account details, IBAN, variable symbols and the contents of any payment QR code
- every clause, term and obligation in a contract
Themys asks you to confirm this review before a document is finalised. That confirmation is recorded with a timestamp and a fingerprint of the document's contents.
We are not responsible for an error in a document that you did not catch before sending it. That includes errors originating in a template, in a default setting, in a calculation, in AI-generated text, and in data carried over from elsewhere in the product. Once you have confirmed and delivered a document, its contents are your statement to your client, not ours.
5. AI-assisted content
Parts of Themys use AI to draft text, extract data from documents you upload, summarise your work and suggest figures. AI output is a starting draft. It is produced automatically, it is not reviewed by a human before you see it, and it can be wrong, incomplete, outdated or plausible-sounding but false — including in numbers.
Everything in section 4 applies to AI output without exception. Treat it as a draft written by someone who has never seen your business and cannot be held to account. Check it.
6. Invoices become final
To keep your records trustworthy, an invoice can only be changed for a short period after you create it.
An invoice is editable until the first of these happens: twenty-four hours pass, you export it to PDF, or you send it to your client. At that point it locks: its contents can no longer be changed, and it can no longer be deleted.
After an invoice locks you can still record its status and payment, cancel it, or issue a corrective invoice linked to the original. You cannot rewrite it. This is deliberate — a delivered invoice that can be silently altered is worth nothing to you in a dispute or an audit.
When an invoice locks, Themys stores a snapshot of exactly what it contained, including the seller and client details as they stood at that moment, with a cryptographic fingerprint.
7. Electronic signatures
Themys can send a contract to someone for signature. This section explains exactly what that does and does not give you.
What happens. When you send a contract, Themys freezes a copy of it and takes a cryptographic fingerprint of that copy. The recipient receives a private link that expires. They open it, type, draw or upload a signature, and confirm. Before the signature is accepted, the frozen copy is re-checked against its fingerprint, so a document that changed in between cannot be signed.
What is recorded. Who it was sent to, when it was sent, delivered, opened, viewed, signed or declined, the signer's name, their IP address and browser, the signature method, and the fingerprint of the exact document they saw. These records are append-only: they cannot be edited afterwards, including by us. A signed contract cannot be altered; to change one, you issue a new one.
What it is worth legally. Under Article 25(1) of the eIDAS Regulation, an electronic signature cannot be denied legal effect or admissibility in evidence merely because it is electronic. That protection applies here. What Themys produces is a simple electronic signature. Only a *qualified* electronic signature carries the automatic legal equivalence to a handwritten signature under Article 25(2), and Themys does not provide one. In a dispute, the weight of a simple electronic signature depends on the surrounding evidence, which is precisely why the audit trail above exists and why it is immutable.
How the signer is identified. By control of the email address you sent the link to, and nothing more. We do not verify identity documents, check a signer's authority to bind their company, or confirm that the person who clicked is the person you intended. If that matters for a particular agreement, verify it yourself by other means.
Your decision, not ours. You decide whether a simple electronic signature is adequate for a given contract and jurisdiction. Some documents cannot be signed this way at all: depending on the country, transfers of real property, certain employment and company documents, wills and some consumer agreements require written form, notarisation, or a qualified signature. Themys does not know what you are signing and will not warn you. If you are unsure, ask a lawyer before sending.
Keep your own copy. We do not store the signed PDF as a file. It is re-created on demand from the frozen copy, the signature images and the audit trail. Download the signed contract and keep it with your own records. If you delete your account, the frozen copy, the signatures and the audit trail are deleted with it, and we cannot recover them.
8. Your account
You are responsible for your account credentials and for everything done through your account. Tell us promptly at hello@themysapp.com if you believe it has been compromised.
You must be at least 18 and using Themys for business purposes. You must not use Themys to create documents that are fraudulent, that misrepresent who you are, or that break the law.
9. Beta service
Themys is offered as a beta service. Features change, break and disappear. Availability is not guaranteed, and we do not commit to any uptime, support response time or data durability target during beta. Keep your own copies.
10. Fees
Paid plans are billed as described at the point of purchase. Beta and founding-member arrangements are honoured on the terms under which they were offered. Taxes are your responsibility unless stated otherwise at checkout.
11. Your data
How we handle personal data is described in the Privacy Policy, which forms part of these Terms.
You keep all rights in the content you put into Themys. You grant us only the permission needed to host it, process it and show it back to you and to the recipients you choose — including sending it to the third-party providers listed in the Privacy Policy so the service can function.
12. Your clients' personal data (our processor terms)
Your contracts, invoices and projects contain personal data about your clients. For that data you are the controller and we are your processor. This section is the written agreement the GDPR requires between us (Art. 28), and it applies automatically from the moment you accept these Terms.
What we process. Contact and identification details of your clients and their staff — names, companies, addresses, email addresses, phone numbers, tax and registration numbers, bank details — plus whatever else you choose to put into documents, files and messages. Where you send a contract for signature, this also covers the signer: their name, email address, signature image, IP address, browser and the times at which they opened, viewed, signed or declined it. We process it for as long as your account exists, solely to provide the service.
Our commitments:
- We process your clients' data only on your instructions, which are given by your use of the service and these Terms. If we are ever legally required to process it otherwise, we will tell you first unless the law forbids it.
- Everyone with access is bound by confidentiality.
- We apply appropriate technical and organisational security measures, including access control at the database level, private file storage, encryption in transit, and hashed credentials.
- We use the sub-processors listed in the Privacy Policy. You authorise them generally. We will update that list before adding a new one, and you may object by closing your account.
- We help you respond to requests from your clients to access, correct or delete their data — most of which you can do yourself in the product at any time.
- We help you meet your own security, breach-notification and impact-assessment duties, and we will tell you without undue delay if we become aware of a breach affecting your clients' data.
- When you delete your account, your clients' data is deleted with it. Export anything you need first.
- We make available the information you reasonably need to show that we are meeting these commitments.
What stays yours. Deciding what data to collect, whether you are allowed to collect it, what to tell your clients about it, and how long you need to keep your own records — those remain your responsibility as controller.
13. Limitation of liability
To the fullest extent permitted by law, Themys is provided "as is" and "as available", without warranties of any kind, whether express or implied, including any warranty that documents produced with Themys are legally valid, tax-compliant, or fit for a particular purpose.
To the fullest extent permitted by law, we are not liable for: the contents of documents you create, send or rely on; errors you did not catch before delivery; a signature being challenged, rejected or found insufficient, or a signed contract being held unenforceable for want of form, identity verification or authority; tax, penalty, interest or assessment arising from a document created with Themys; a client's failure to pay; lost profit, lost revenue, lost business or lost data; or any indirect or consequential loss.
Where we are liable, our total liability to you for all claims arising in any twelve-month period is limited to the greater of the amount you paid us for the service in that period, or fifty euros (EUR 50).
Nothing in these Terms excludes or limits our liability for death or personal injury caused by our negligence, for fraud or fraudulent misrepresentation, for gross negligence or intentional misconduct, or for anything else that cannot lawfully be excluded or limited. If you deal with us as a consumer, you keep all rights that consumer law gives you, and nothing here reduces them.
14. Indemnity
You will indemnify us against claims brought by a third party — including your clients and any tax or regulatory authority — arising from documents you created, sent or relied on using Themys, except to the extent the claim results from our own gross negligence or intentional misconduct.
15. Suspension and termination
You can stop using Themys and delete your account at any time from Settings. Deleting your account removes your data and your uploaded files from our systems, permanently and without recovery. Export anything you need to keep before you do it.
We may suspend or terminate an account that breaches these Terms, that we are legally required to act on, or that puts the service or other users at risk.
16. Changes to these Terms
We may update these Terms. Each version is identified by a version date, and the text of each version is fingerprinted, so it is always possible to establish which wording you accepted and when.
When a new version materially affects your rights or obligations, we will ask you to accept it before you continue using Themys. Continuing to use the service after accepting a version means that version governs.
17. Governing law
These Terms are governed by the laws of the Slovak Republic, and the courts of the Slovak Republic have jurisdiction, except where mandatory law in your country of residence gives you the right to bring proceedings elsewhere.
If any provision of these Terms is found unenforceable, the rest remains in force.