How nthoughts handles your voice and your data

We collect minimal information to deliver personalized coaching: your Google profile data (name, email, and avatar) for authentication, session speech-to-text transcriptions, and local configuration preferences.

Your verbal transcripts are analyzed securely by LLM inference engines to generate grammar corrections. Audio output is synthesized using high-fidelity ElevenLabs voices. We do not store raw voice recordings indefinitely on our servers.

We believe in a local-first architecture. Any vocabulary mistakes marked for spacing and recall review are cached securely in your browser's local storage (localStorage) under 'nthoughts_mastered_mistakes'.

Your authentication tokens are stored securely in browser cache and transmitted over encrypted SSL channels. We do not sell, rent, or lease your profile metadata or learning transcripts to third-party ad networks.

You retain complete ownership over your learning history. At any time, you can visit the Settings panel to export your compiled curriculum history or permanently request the purging of your practice sessions.

We use third-party advertising vendors, including Google AdSense, to serve ads when you visit our website. Google uses cookies (such as DART cookies) to serve ads based on your prior visits to our site and other websites on the Internet. You may opt out of personalized advertising by visiting Google Ads Settings (https://adssettings.google.com) or AboutAds (http://www.aboutads.info).