Techyon is a small product run by one person. This page says plainly what the app and this website collect, why, and what we never do with it.
01Who we are
Chengyue Liu, an individual based in Singapore (“Techyon”, “we”), runs the Techyon app and this website. For anything about your data, email support@techyon.today, or write to us through the support page or in the app under Settings › Contact us. We read every message.
02What we collect
- Email address — only when you sign in with email or buy on our website, to sign you in, send you codes and connect your membership.
- Membership status — your plan, trial and renewal dates, and the purchase ID from Apple or Paddle. We never see your card details.
- Push device token — so the daily issue and breaking alerts reach this device.
- Notification preferences — your quiet hours, language and time zone.
- Feedback and messages — how you rate an issue, and what you send us through Contact us.
We don’t collect your name, contacts, location or advertising identifiers, and there are no third-party analytics in the app.
03Why we use it
- Delivery — sending each issue and breaking alert as soon as it’s ready, and holding it during your quiet hours.
- Membership — trial, billing status, restoring purchases.
- Getting better — answering your messages and improving the issues.
04Website: checkout and messages
Buying on the website — Paddle handles the payment, and your card details go straight to Paddle, never through us. From Paddle we receive your email, plan and subscription status, so your membership works in the app. For the student price we send a code to your school email to confirm you can receive mail there.
When you buy at /start, we pass these to Paddle’s checkout and keep them with your subscription: your email, your plan, language, time zone and quiet hours, and the campaign tags in the link you came from (utm_* or ref). When you write to us from the support page, we keep your email and your message.
We use them only to set up your membership in the app, to deliver it the way you chose, to answer you, and to understand which links bring people here. Your quiz answers on /start only shape the result shown on the page; they aren’t sent to us.
We don’t store IP addresses. We don’t share or sell any of it, and there are no third-party trackers on this site; Paddle’s checkout loads only after you choose to start your free week. To have it deleted, ask us from the support page.
05What we never do
No ads. No third-party tracking. We don’t sell, rent or trade your data, and we don’t use it to build advertising profiles.
06Who handles data for us
- Apple — push notifications and in-app purchases.
- Paddle — payments on our website. Paddle is the merchant of record for those purchases.
- Resend — sends the sign-in and student verification codes by email.
- Our hosting provider — runs the server that keeps your settings and sends notifications.
Each uses the data only to provide its service, under its own privacy terms.
07How issues are written
Each issue is written with AI assistance from public, first-hand sources — papers, code, release notes, the authors’ own posts — and every claim links to its source. No personal data about you is ever sent to AI providers.
08Keeping and deleting
We keep your data only while you use Techyon. To have it deleted, ask through the support page and we’ll remove it promptly. Purchase records that tax law requires are kept by Apple or Paddle, and by us only as long as the law requires.
09Children
Techyon is not meant for children under 13, and we don’t knowingly collect their data. If you think a child has sent us data, contact us and we’ll delete it.
10Changes
When this policy changes we’ll update the date above, and tell you in the app before any change that affects you takes effect.