Privacy Policy

Last updated: October 27, 2026

Periodline is provided by Atesen Software (Samet Ateşen, sole proprietor), Adapazarı, Sakarya, Türkiye. Contact: sametatesen2@gmail.com.

Your files stay in your browser

When you choose or paste a schedule file, it is read by code running in your own browser tab, and the journal entries, posting record and working papers are made there too. Company names, vendors, customers, assets, amounts and the files you download are not sent to us or to anyone else. We do not use analytics, advertising or tracking cookies.

Saved companies

Each company’s name, settings, last schedule, saved posting record and the balances you type in are saved in your browser’s local storage, so next month starts where you left off. They are not sent to us. “Remove this company from this browser” deletes a company, and clearing your browser’s site data deletes them all; save the company file first if you need it.

License checks

If you enter a license key, your browser sends only the key to our license endpoint (/api/license on this site). That endpoint asks Paddle whether the subscription is active and returns yes or no and the plan, with a signed token that lets the browser keep working for up to 24 hours if it goes offline. Your browser stores the key and that token in local storage; “Remove key from this browser” deletes it.

Purchases

Checkout is provided by Paddle.com, our Merchant of Record, which collects your name, email, billing address and card details under its own privacy policy. We receive from Paddle the order details we need to provide and support the subscription (such as your email, country, plan and subscription status). We never see your full card details.

Hosting

The site is served by a hosting provider that processes standard connection data (such as IP address) to deliver pages and protect against abuse.

Your rights

You can ask us to access, correct or delete the personal data we hold about you (in practice, Paddle order details) by emailing us. We keep order records only as long as needed for tax and accounting obligations.