Privacy Policy
Last updated: 21 October 2026
Seda is a speech therapy app for aphasia recovery. Using it means trusting us with sensitive information — how your speech practice is going, and sometimes your voice and photos. This page explains exactly what we collect, why, who else can see it, and how to get rid of it.
Who we are
Seda Speech Therapy is operated by Lychee Studio Inc., the data controller for the information described here. You can reach us about anything on this page at hello@sedaspeech.com.
What we collect
Account information
Your email address and password. Passwords are handled by our authentication provider and stored only as a cryptographic hash — we never see or store your actual password.
Profile and onboarding answers
The country you live in, the languages you practise in, and the cultural and religious preferences you select during onboarding. Seda uses these to choose vocabulary that is actually relevant to you — for example, not drilling you on foods you have never eaten. Speech-language pathologists additionally provide a practice name.
Therapy activity
This is health-related information, and we treat it as the most sensitive data in the app. It includes:
- Which words you attempted, and whether each attempt was correct
- Which hints you used (spelling, audio, clue, full word)
- For comprehension exercises, which wrong options you tapped
- Session scores, exercise type and completion times
- Spaced-repetition scheduling state for each word — how well you know it and when it is due again
- Your weekly practice goal and streak
Content you create
If you add your own vocabulary, we store the words, notes and categories you write, plus any photos you upload and any voice recordings you make. Recording is entirely optional and only happens when you press record — Seda never listens in the background, and there is no always-on microphone access.
Analytics and diagnostics
We use PostHog to understand how the app is used and to catch crashes. This records screen views, taps, app open/close events, and error reports including technical details of what failed. These events are linked to your account, and your email address and name are sent to PostHog so we can support you when something breaks. We do not record your screen or session.
How we use it
- To run the exercises and personalise which words you see
- To schedule review using spaced repetition, so practice targets what you find hard
- To show you your progress over time
- To let your speech-language pathologist follow your progress, if you have chosen to connect with one
- To fix bugs, diagnose crashes and improve the app
- To contact you about your account
We do not use your data for advertising, we do not sell it, and we do not use your therapy activity or recordings to train AI models.
Who else can see your data
Your speech-language pathologist
Seda lets a speech-language pathologist (SLP) invite you to connect. Nothing is shared until you accept that invitation. Once you accept, that SLP can see your profile, your exercise progress and session history, your custom words, and your vocabulary settings. They cannot see your password. You can revoke access at any time from Settings → SLP data access, which stops any further sharing.
Service providers
- Supabase — hosts our database, file storage and authentication. All of your account data, therapy activity and uploads live here.
- PostHog — product analytics and error tracking, processed on their US infrastructure.
These providers process data on our instructions. We do not share your information with anyone else unless we are legally required to.
Where your data is stored
Your data is stored on our providers' cloud infrastructure and may be processed outside the country you live in — our analytics provider processes data in the United States. Where the law requires it, transfers are covered by appropriate safeguards such as standard contractual clauses.
How long we keep it
We keep your data for as long as your account exists. When you delete your account it is erased as described below. Anonymous, aggregated statistics that cannot identify you may be retained.
Deleting your account and your data
You can delete your account at any time from inside the app: Settings → Delete account. This permanently erases your profile, all exercise progress and session history, your custom words, your uploaded photos and voice recordings, and your login itself. It also removes any connection to an SLP. It cannot be undone.
If you cannot access the app, see our account deletion page or email hello@sedaspeech.com and we will do it for you.
Your rights
Depending on where you live, you may have the right to access a copy of your data, correct it, delete it, restrict or object to how we use it, and to receive it in a portable format. You can exercise any of these by emailing hello@sedaspeech.com. You also have the right to complain to your local data protection authority.
Children
Seda is designed for adults recovering from aphasia and is not directed at children under 13. We do not knowingly collect data from children under 13. If you believe a child has created an account, contact us and we will delete it.
Security
Data is encrypted in transit. Access to your records is enforced at the database level, so one user cannot read another user's data, and an SLP can only reach the records of patients who have accepted their invitation. No system is perfectly secure, but we work to keep this one sound and to fix problems quickly.
Changes to this policy
If we make material changes we will update the date at the top of this page and, where appropriate, tell you in the app.
Contact
Questions, requests or complaints: hello@sedaspeech.com.