SitlightHow it's made
How Sitlight is made
Sitlight teaches meditation with short lessons to read and a few quiet lines on screen while you sit. Here is who writes those words, how the app chooses among them, and what happens to what you log.
Written with AI, reviewed by a person
Every lesson, prompt, tip and reminder in Sitlight is drafted with AI, then read, edited and approved by Shitan Yang, who takes editorial responsibility for all of them. Only approved lines go into the app.
No voice
Sitlight has no voice at all: no recorded narration, no AI voice and no synthetic speech. You read a short lesson before you sit, and during the sit short lines appear on screen, each with a soft chime. The music, bells and background sounds are synthesized by code.
The practices
The practices are long-established ones: resting attention on the breath, the body or sounds, noting what comes up, and kindness toward yourself and others. Sitlight doesn't invent techniques of its own.
Today's sit
Today's sit is one sit a day, put together on your device. Fixed rules look at your check-in (how you arrive and how long you have) and at what has worked for you before: how your mood changed in earlier sits, and how your heart rate settled during them. They choose a practice, a length and how many prompts, using only lines a person has reviewed, and show one plain line saying why.
Today's sit never writes new guidance. It's free once a week, and every day with Pro.
The weekly letter
Pro's weekly letter is written for your week alone, so no person reviews it before you read it. It's written on your device by Apple Intelligence where that's available, or from a template where it isn't, and it's labelled in the app. Your sits aren't sent anywhere to write it.
Your data
Nothing you log in Sitlight leaves your device, and none of it is used to train any AI. There's no account and no server, so your sits, check-ins, notes and Health readings are never sent to us or to anyone else. The privacy policy has the details.
If a line reads wrong
If a lesson, prompt or tip reads wrong, unclear or unkind, please write to support@sitlight.app and tell us where you saw it. We read every message and correct what needs correcting in an update.
Not a substitute for care
Sitlight is for practice and reflection, not medical care. What it shows about your mood, heart rate, HRV and sleep is wellness information, not medical advice. If you're struggling, please reach out to someone; findahelpline.com lists free, confidential helplines in many countries.