Last updated October 3, 2026
The short version: Vellum collects only what it needs to sign you in and sync your schedule. We don't sell anything, we don't track you, and you can delete everything at any time.
This policy applies to the Vellum iOS app and the website vellumscheduler.com, operated by Sam Kim, sole proprietor, Arlington, Virginia.
Phone number. Used only to sign you in with a one-time SMS code. Codes are handled by our messaging provider and are never stored by us.
First name. Optional, used only to greet you in the app.
Your schedule. The text you write is stored on your device and synced to our servers so it survives reinstalls and new devices.
Account identifier. On first sign-in we create a random account ID. Your data is keyed to that ID, not your phone number.
No ads. No third-party tracking. No selling of data. We don't collect your location, contacts, or anything else on your device, and we build no advertising profiles from your schedule.
What we collect and how we use it: we collect your mobile phone number only to send you a one time sign in code by text message when you request one in the Vellum app. That is the only text message we send. We send no marketing or promotional texts.
We do not share, sell, or provide your mobile phone number or messaging consent data to third parties or affiliates for marketing or promotional purposes. Your number is passed to our messaging provider, Twilio, solely to deliver your sign in code.
Message frequency: one text each time you request a code. Message and data rates may apply. Reply STOP to opt out or HELP for help. See our Terms of Service for program details and our consent page for how sign in consent is collected, or contact sam@vellumscheduler.com.
Data is stored with our infrastructure providers in the United States, encrypted in transit over HTTPS. Only Vellum's backend can reach the database; your device never connects to it directly.
In the app, Account → Delete account permanently removes your schedule, your account record, and your phone number from our servers, and clears local data on your device. This is immediate and cannot be undone.
Vellum is not directed at children under 13, and we do not knowingly collect their information.
If this policy changes in a meaningful way, we'll update this page and the date above.