Terms of use
In force: 2026-10-29
1. Provider
Provider: Süleyman Kayışkır (private individual, developer of the app) · Postal address: 1133 Budapest, Pannónia utca 72–74., Hungary · E-mail: skayiskir@hotmail.com. Hosting: the app runs on your device and we have no server that stores data; the relay server of the optional AI feature is provided by Cloudflare, Inc. (101 Townsend St, San Francisco, CA 94107, USA; privacyquestions@cloudflare.com). The web version is not yet publicly available; before it is, we will list its hosting provider here.
2. What the app is for
Stornio helps you track subscriptions, calculate deadlines and prepare cancellation, withdrawal, complaint and refund letters. The app creates the letters and PDFs, but you send them. The app's basic functions are free; some functions require a Stornio Plus subscription (see "Stornio Plus (paid subscription)").
3. Conclusion and language of the contract
The contract of use between you and the operator is concluded when, at the app's first launch and after reading the documents, you accept these terms with the checkboxes and the accept button. Before accepting, you can read the documents, change the checkboxes and leave without accepting. The contract is not a written contract; we do not file it and receive no data about it: the fact, time and accepted version of your acceptance are recorded only on your device. The current text of these terms is available at any time in the app (Settings) and can be saved as a PDF and shared. The language of the contract is the app language you choose (Hungarian, English, German or Turkish); the language versions have the same content, and in case of a discrepancy the interpretation more favourable to you prevails. We have not subscribed to any code of conduct.
4. Age
The app may be used by persons aged 16 or over. If you are not yet an adult, talk to your parents or legal guardian before accepting. Only users aged 16 or over may switch on the AI feature.
5. Not a legal service
The app is not a legal service: it is not the practice of law within the meaning of the Hungarian Attorneys Act (Act LXXVIII of 2017, Üttv.), not a legal service within the meaning of the German Legal Services Act (Rechtsdienstleistungsgesetz, RDG), and not legal advice. The letters are assembled from pre-written text blocks that are the same for every user, based on the details you enter; the app does not legally examine your individual case. The AI's reply analysis and the suggested next step are general information, not a legal assessment of your case. We do not act on your behalf, do not represent you and do not guarantee that a company, a bank or an authority will fulfil your request. Read the text before sending; if in doubt, ask a professional (lawyer, consumer organisation).
6. Accuracy of data
Data extracted from invoices, photos or PDFs, the merchant database (cancellation e-mail, link, notice period) and calculated deadlines are for information only and may be wrong or outdated. Meeting deadlines and checking data against your original contract or invoice is up to you. Reminders are a help, not a guarantee (they may fail, e.g. because of device settings).
7. AI features
The results of the optional AI features may be wrong, incomplete or misleading; they are suggestions only, not legal advice, and do not replace checking the contract or invoice. You approve every AI result before using it, and you decide on the content and sending of your letters. There is a daily usage limit. You can switch the feature on and off at any time in Settings. We will discontinue or restrict the AI feature only if the external AI service is unavailable or if a law, an official requirement or a security reason makes it necessary; where possible, we will notify you in advance in the app. The app's other functions do not depend on it.
8. Stornio Plus (paid subscription)
Free of charge: tracking up to 5 active subscriptions, the calendar, reminders, withdrawal and termination letters, and reading invoices, photos and PDFs. Stornio Plus is an automatically renewing paid subscription that additionally unlocks unlimited subscriptions, the optional AI features and the further letter types (complaint, conciliation board application, missing withdrawal function, chargeback request to your bank). Monthly and yearly plans are available; the store shows the price in your local currency, including taxes, before you buy.
Both plans include a 7-day free trial if you are eligible under the store's rules (usually for your first subscription). Unless you cancel at least 24 hours before the trial ends, the subscription continues with a paid period.
Purchase, payment, billing, renewal and cancellation take place through Apple (App Store) or Google (Google Play) under their terms. The subscription renews automatically unless you cancel at least 24 hours before the end of the current period; you can manage and cancel it in the subscription settings of your Apple ID or Google Play account. After cancelling, Plus remains active until the end of the paid period. Refunds are granted by Apple or Google under their own rules; as we do not handle payments, we cannot refund you directly. This does not affect your mandatory consumer rights (e.g. the right of withdrawal).
If Plus ends, we do not hide or delete your data: only new actions tied to Plus (adding a 6th subscription, starting a Plus letter type, AI) are unavailable. You can restore an earlier purchase in the app with the "Restore purchases" button. Plus cannot be bought in the web version or where the store is not available.
9. Use and rights
You may use the app lawfully to manage your own affairs. You may freely use, modify, send and share the letters, PDFs and summaries the app creates. The rights in the app's software, design, name and collection of letter templates belong to the operator; you may not copy or distribute them beyond your own use. Decompiling and examining the software is permitted in the cases and to the extent permitted by law (in Hungary Sections 59–60 Szjt., in Germany Sections 69d–69e UrhG). Abusive use of the app is prohibited, in particular overloading the relay server or circumventing the daily limit. We acquire no rights in the data and documents you enter.
10. Liability
The operator is liable for damage caused by breach of contract in accordance with the law. We are not liable for damage resulting from data from a merchant or your document being wrong, or from a reminder not appearing because of device settings, unless we caused this. We do not limit liability for damage caused intentionally or by gross negligence, for injury to life, body or health, or under product liability rules. If you live in Germany: in cases of slight negligence we are liable only for breach of an essential contractual obligation whose fulfilment makes the proper performance of the contract possible in the first place and on whose observance you may regularly rely; in that case liability is limited to the foreseeable damage typical for the contract. This section does not affect your mandatory consumer rights.
11. Complaints and dispute resolution
You can submit a complaint about the app in writing, by e-mail (skayiskir@hotmail.com) or by post (Süleyman Kayışkır, 1133 Budapest, Pannónia utca 72–74., Hungary). We reply to a written complaint in writing and on the merits within 30 days of receipt (Section 17/A(6) of the Hungarian Consumer Protection Act, Act CLV of 1997 [Fgytv.]); if we reject the complaint, we give our reasons and tell you which authority or conciliation board you can turn to.
If the dispute cannot be settled with us, you can turn to the conciliation board (békéltető testület) competent for your place of residence or stay; at your request, another board named in your application will act. If you have no residence or place of stay in Hungary, the board competent for our address is responsible: Budapest Conciliation Board (Budapesti Békéltető Testület) – seat: 1016 Budapest, Krisztina krt. 99. I. em. 111.; postal address: 1253 Budapest, Pf. 10.; phone: +36 1 488 2131; e-mail: bekelteto.testulet@bkik.hu; website: bekeltet.bkik.hu. Contact details of all conciliation boards: bekeltetes.hu. We cooperate in conciliation board proceedings (Section 29(11) Fgytv.). You may also go to court.
For users in Germany: as a provider established in Hungary, we cooperate in proceedings before the Hungarian conciliation boards under the Hungarian Consumer Protection Act; you can turn to the Budapest Conciliation Board named above even if you live in Germany. We do not participate in dispute resolution proceedings before a German consumer arbitration board (Verbraucherschlichtungsstelle).
12. Changes to the terms
We change these terms only for good cause: a change in the law, an official or court decision, the introduction of a new function or the discontinuation of an existing one, or a security reason. We will notify you in the app at least 15 days before a change takes effect, with a short summary of the change. If you do not accept the change, you can stop using the app at any time; you can still export your data (encrypted backup file) or delete it in the app.
13. Governing law
Hungarian law applies; this does not affect the mandatory consumer protection rules of your country of residence. In force: 2026-10-29.
14. Change log
2026-10-29: the provider is now a private individual (Süleyman Kayışkır), new postal and e-mail address; new section: Stornio Plus (free and paid functions, trial, automatic renewal, cancellation and refunds through Apple or Google).
2026-10-26: full provider details; conclusion and language of the contract; age; complaints and conciliation board; liability clause clarified ("as is" clause removed); conditions for changes; rights to use the letters and the software; conditions for discontinuing the AI feature. Previous version: 2026-10-21.