Our mission
Sereneo is a quiet place to journal and check in on how you feel. It gently reflects your patterns back to you — without judgment, scores, or pressure — one day at a time.
Inside Sereneo
Three things, done carefully — instead of a dashboard of features competing for your attention.
Journal
Write as much or as little as you like. Every entry saves to your device the moment you write it, so nothing waits on a connection and nothing gets lost.
Check in
Quick mood check-ins, with a tag or a sentence if you want one — and a few lines on what you're grateful for, on the days that helps. Small enough to do on a hard day, and never nagging you when you skip one.
Reflections
Every so often, Sereneo gathers what you've written into a quiet summary of how your weeks have actually gone. A gift, not a report card — and an AI reflection only if you switch it on.
Sereneo handles what the GDPR calls special-category health data. It is built that way from the ground up, rather than as a policy page written afterwards.
Encrypted
Every entry, with a key unique to you
No ads, ever
No trackers, no data sold, no ad networks
Yours to take
Export anytime, delete your account in a few taps
Not open yet
Sereneo is still being built, carefully. Leave your email and you'll hear from us when it opens — no drip campaign, no countdown, no launch hype.
What you'll get on day one
Writing and checking in are free. There's an optional subscription for the deeper reflections — you'll see the price in your own currency before you agree to anything.
Questions
The things people most want to know before they trust an app with how they feel.
No. Sereneo is a self-reflection tool. It doesn't diagnose, treat, or prescribe, and it isn't a crisis service. If you're struggling, please talk to a real person — your local emergency number, or a crisis line where you are. In Norway, Mental Helse is on 116 123 and the emergency number is 113; across the EU, 112 reaches emergency services.
No. Journal text and any AI reflection are encrypted with a key unique to you. Delete your account and that key goes with it, immediately and for good.
No. AI reflections are a separate, explicit choice that starts switched off. Say no, or change your mind later, and the rest of Sereneo works exactly the same.
Never. Your entries are not used to train anyone's model — ours or a third party's. When an AI reflection is generated, it's labelled as AI and it isn't retained for training.
Because we'd like to know which pages are worth writing more of, and the tool that tells us that sets a cookie. Saying no costs you nothing — the site works identically, nothing is loaded, and nothing is stored. Saying yes stores a random identifier that recognises a return visit; it isn't an advertising identifier, it doesn't follow you to other sites, and "Cookie choices" in the footer deletes it again. The app itself is separate and asks you there.
Yes. Every entry saves to your device the moment you write it, so nothing waits on a connection and nothing gets lost if you're offline.
Writing, checking in and looking back over your own entries are free, and stay free. There's an optional subscription — monthly or yearly — that unlocks the deeper reflections and trends. Final prices are set per country by the App Store and you'll see yours before you agree to anything; nothing is charged without you choosing it.
It's coming to iPhone first. There's no date yet — join the waitlist and you'll get one email when it opens.
Probably. Sereneo is built in 47 languages and follows whatever your iPhone is already set to — there's no language menu to find, and you can change it per-app in iOS Settings if you'd rather read Sereneo in something else. Arabic, Bengali, Catalan, Chinese (Simplified and Traditional), Croatian, Czech, Danish, Dutch, English, Finnish, French (France and Canada), German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malay, Malayalam, Marathi, Norwegian (Bokmål and Nynorsk), Polish, Portuguese (Brazil and Portugal), Punjabi, Romanian, Russian, Slovak, Slovenian, Spanish (Spain and Mexico), Swedish, Tamil, Telugu, Thai, Turkish, Ukrainian, Urdu and Vietnamese. Right-to-left reading is handled properly, not bolted on.
Trust is the product
What you write here stays yours. Sereneo handles what the GDPR calls special-category health data, and it's built that way from the ground up.
Journal text and any AI reflection are encrypted with a key unique to you. Delete your account and that key goes with it, immediately and for good.
No ads, no advertising identifiers, no cross-app tracking, no location, and no access to your contacts, photos, microphone, or camera. We use one analytics tool to see which screens people get stuck on — it's hosted in the EU, it asks before it runs, and it never sees a word you write.
AI reflections are a separate, explicit choice that starts switched off. Say no, or change your mind later, and the rest of Sereneo works exactly the same.
Export your data whenever you like. Delete your account from inside the app in a few taps — no email, no retention window, no talking you out of it.
The full detail is in the Privacy Policy — including exactly what is stored, on what legal basis, and for how long.
Sereneo is coming to iPhone, in 47 languages. One email when it's ready. Nothing else.
