Last updated: June 2026
Der Leyner is built to collect as little about you as possible. This page explains what we store, why, and how to remove it.
If you sign in with Google, we store the basic profile Google shares with us — your Google account identifier, email address, name, and profile picture URL — together with the vocabulary words you choose to save. If you do not sign in, your saved words stay only in your own browser (local storage) and are never sent to or stored on our servers.
We use your account details only to sign you in and to keep your saved word list attached to your account across devices. We do not use your information for advertising, and we do not employ third-party tracking or analytics.
To grade a translation, the Yiddish sentence, your translation, and the immediately surrounding sentences (for context) are sent to Anthropic’s Claude API, which generates the feedback. When you ask for an AI word meaning, the selected word or phrase is sent for the same purpose. This data is processed by Anthropic under their terms and is not used by us for any other purpose.
We use a single functional cookie to keep you signed in. There are no advertising or tracking cookies.
We do not sell or share your personal information. The only third party that receives data is Anthropic, solely to provide the grading and definition features described above.
You can remove saved words at any time from within the app. To delete your account and the data associated with it, email leyner.app@gmail.com and we will remove it.
Der Leyner is intended for a general audience and is not directed to children under 13.
We may update this policy from time to time; material changes will be reflected by the “last updated” date above.
Questions about privacy? Reach us at leyner.app@gmail.com.