Terms of Service.
The short version: you own your content, we never store it permanently, and the token map lives only for the length of a session.
We don’t train on it, sell it or hand it to anyone you didn’t choose.
Token maps live in memory for one session and are wiped when it ends.
Cancel any time. Slovak law applies; your consumer rights are untouched.
01About the service
Synonym is a reversible pseudonymization gateway. Files, text and PDFs that pass through it are first stripped of personal and sensitive identifiers (for example a birth number, company ID, IBAN, e-mail address or name), which are replaced with neutral tokens such as <PERSON_1>. Only this tokenized output is what you send on — to an LLM, a third party, anywhere. When a reply built on those tokens comes back, Synonym can restore the original values within the same session.
The mapping between a token and its original value exists only for the length of a session and has a time-limited validity (TTL) — see the Privacy Policy for exact retention periods. Synonym is not a backup tool or permanent storage for your data.
02Your account
You need an account to use the product (app.usesynonym.eu) and the API. You are responsible for the accuracy of your registration details, for protecting your password and API key, and for everything that happens under your account. If you notice unauthorised access, contact us immediately (see section 12) and change your password at app.usesynonym.eu/forgot-password.
03Acceptable use
You may not use Synonym for:
- anything that breaches Slovak or European law;
- attempts to overload, break or circumvent the service’s limits and security (for example brute-forcing API keys or automated evasion of rate limits);
- processing content you have no right to process (for example third-party data without a lawful basis);
- reverse-engineering the detection or masking core in order to evade its accuracy.
In case of a breach we may temporarily restrict or terminate the account — see section 9.
04Your data and content
Content you send through Synonym (files, text, PDFs) remains your property. We do not use it to train models, we do not sell it, and we do not pass it to third parties other than the destination you choose yourself (for example the LLM provider you configure for the “Ask the model” feature). A detailed description of what is and is not processed is in the Privacy Policy.
05Plans and payments
The Free plan is available to everyone, with limits on team size, upload size and session length (current values are shown in the app and on the pricing page). The paid plans — Starter, Pro and Business — are billed monthly per user; Enterprise is priced individually. Prices are shown excluding VAT unless stated otherwise.
A paid subscription renews automatically each billing period until you cancel it in the app; cancelling stops the next renewal and your plan stays active until the end of the period already paid for. If we change a price, we tell you at least 30 days in advance and the new price applies from your next renewal.
06Availability and changes
Synonym is a young product and evolves quickly. We do not guarantee a specific uptime (SLA) on self-service plans — we aim for high reliability, but outages or temporary limits can happen. We may add, change or remove features; where a change would restrict something you already rely on, we try to let you know in advance. Enterprise agreements can include a contractual SLA.
07Limitation of liability
Synonym reduces the risk of leaking personal data when working with LLMs, but it does not replace your own judgement about what may be sent where, nor the terms of third parties (for example your LLM provider). You remain responsible for the content you process through the service and for the obligations you have towards your own customers or employees (for example as a data controller under the GDPR).
To the extent permitted by law, we are not liable for indirect or consequential damages arising from the use of the service; our liability is limited to the amount you actually paid us in the preceding 12 months (on the Free plan, therefore, zero).
08Intellectual property
The software, detection patterns, design and the Synonym brand belong to Synonym s.r.o. These terms do not grant you any rights to them beyond ordinary use of the service in accordance with them.
09Termination
You can stop using your account at any time. In case of a serious breach of section 3 we may suspend or terminate the account; where circumstances allow, we warn you first and give you room to fix it. Termination has no effect on data that no longer exists at that time — session mappings are time-limited anyway (see section 1).
10Changes to these terms
We may update these terms from time to time, mainly as features are added. The current version is always on this page with the effective date at the top. We notify you of material changes by e-mail or in the app.
11Governing law
These terms are governed by the laws of the Slovak Republic. Any disputes fall under the jurisdiction of the competent courts of the Slovak Republic, unless mandatory law provides otherwise (for example for consumers resident in another EU member state).
12Contact
Questions about these terms go to hello@usesynonym.eu.