Privacy Policy

Last updated: October 19, 2026

At a glance
  • Sereno is run by Ivan Salgarello, a sole trader based in Italy. European data protection law (GDPR) applies.
  • We use your data to run the app: your account, your pets' records, reminders, reports and family sharing.
  • We never sell your data and we never give your pet's health records to advertisers.
  • Your app data is stored in the European Union (Stockholm, Sweden).
  • To measure our ads we use Meta's tools in the app and, only if you accept cookies, Meta's and OpenAI's tools on our website.
  • You can delete your account and all its data from the app at any time.

1. Who is responsible for your data

The data controller is Ivan Salgarello, sole trader, trading as Sereno ("we", "us"), Via Tombola 6, 37053 Cerea (VR), Italy — VAT no. IT05070290233 — email supportserenopet@gmail.com.

This policy covers the Sereno app for iOS and Android, the website serenopet.com and the emails you exchange with us. We have not appointed a Data Protection Officer because the law does not require one for our activity (Art. 37 GDPR): write to the email above for any privacy question.

2. What data we collect

CategoryWhat it includes
AccountEmail address, password (stored only as a one-way hash), name, language, notification settings.
Sign in with Apple or GoogleThe name and email address the provider shares with us when you choose it (with Apple you can hide your real email).
Pet profilesName, species, breed, sex, date of birth, weight, microchip number, photo, conditions, allergies.
Pet health recordsMedications and doses given, medication changes, symptoms and seizures, vaccinations, vet visits and costs, blood glucose, weight, temperature, breathing rate, food, water, stool, fluids, quality-of-life scores, lumps, lab results, activities, treatments, care reminders, notes, and the documents and photos you upload.
Your vet's detailsName, clinic, phone and email of your vet, if you enter them (for example for the emergency card and the reports).
Family sharingEmail addresses of the people you invite (optional), invitation codes and links (they expire after 7 days), each member's role, who recorded what on a shared pet (for example "Marco gave the dose"), and which family member's phone holds a seizure video. To stop people guessing codes, we briefly keep a record of wrong codes entered from your account.
Seizure videos (Pro)A video you record or pick for a seizure stays only on your phone, without sound: the app does not use the microphone. It is uploaded to us only when you send it to your vet. Then the video, that seizure's details (date, duration, intensity, signs before the seizure, notes) and the names of the medications in use that day can be seen by anyone with the link, until it expires; while the link is active, the family members of that pet can also watch the video in the app.
SubscriptionPlan, trial and renewal dates, store, product, price, currency and country of purchase, store transaction identifiers. We never see your card details: payments are handled by Apple or Google.
How you found usYour optional answer at sign-up (for example a Facebook group, Instagram or your vet) and any partner code you enter.
App usageHow many times a day you open the app, the time of the first and last opening, platform and app version, and when you create a report.
DevicePush notification token, platform (iOS/Android), app version, language.
Crash reportsTechnical details of errors: device model, operating system, app version, error trace. The tool is set up not to send default personal identifiers.
Ad measurement in the appOnly if you allow it (on iPhone through Apple's tracking prompt, on Android through Sereno's ad measurement prompt): your Sereno account ID (a random code, not your name or email) and the advertising identifier of your device. These events: install, app open, sign-up completed and the method used, onboarding completed, first pet added (species only), first medication added, checkout started, trial started, purchase with amount and currency. On Android they are sent only if you allow ad measurement; on iPhone, if you don't allow tracking, they are sent without your account ID or advertising identifier. Never health records, pet names or notes.
SupportThe emails you send us and our replies.
WebsiteIP address and technical request data in our hosting logs; your language and cookie choice saved in your browser; and, only if you accept cookies, the data collected by the Meta Pixel and the OpenAI pixel (pages visited, clicks on the store buttons and on the email button of the beta page, IP address, browser and device information, cookie identifiers).

What is required. To create an account we need an email address (or Sign in with Apple/Google). Everything else is optional, but without it some features will not work.

Pet data. Animal health data is not "special category" data under the GDPR, which protects human health data. We still protect it as if it were.

Data about you and other people. Sereno is made for your pet's data: please do not write health information about yourself or other people in notes or documents. If you enter your vet's details or invite family members, make sure they are fine with it.

3. Why we use it and our legal bases

PurposeLegal basis (GDPR)
Create and run your account; store and sync your records; reminders, reports, emergency card, seizure videos sent to your vet and family sharingPerformance of the contract (Art. 6(1)(b))
Manage subscriptions, free trials and partner codesPerformance of the contract (Art. 6(1)(b))
Keep billing recordsLegal obligation under Italian tax and accounting law (Art. 6(1)(c))
Count app openings, analyse crashes, prevent abuse, keep the service secure, understand how people find usOur legitimate interest in keeping Sereno working, safe and useful (Art. 6(1)(f)). You can object at any time.
Measure our ads in the appiPhone: your consent through Apple's tracking prompt (Art. 6(1)(a)). Android: your consent through the ad measurement prompt in the app (Art. 6(1)(a) GDPR and Art. 122 of the Italian Privacy Code); you can withdraw it at any time, see section 6.
Meta Pixel and OpenAI pixel on the websiteYour consent through the cookie banner (Art. 6(1)(a) GDPR and Art. 122 of the Italian Privacy Code)
Answer your emailsPerformance of the contract or our legitimate interest in replying to you
Comply with the law, answer authorities, defend legal claimsLegal obligation (Art. 6(1)(c)) and legitimate interest (Art. 6(1)(f))

We do not make decisions about you based solely on automated processing that produce legal or similarly significant effects (Art. 22 GDPR). Sereno does not give veterinary advice and does not judge your pet's health on its own.

4. Who we share it with

We do not sell your data. We use these providers to run Sereno. Where they process data for us, they do so under a data processing agreement (Art. 28 GDPR).

ProviderWhat it does for usDataWhere
SupabaseDatabase, sign-in, file storageAll app dataEU — Stockholm, Sweden
SentryCrash reportsTechnical error dataEU — Germany
ExpoSends push notificationsPush token, notification textUSA
Apple Push Notification service, Google Firebase Cloud MessagingDeliver notifications to your devicePush token, notification textWorldwide
RevenueCatManages subscriptionsSereno account ID, purchase dataUSA
ResendSends account emails (verification codes, password reset)Email address, email contentUSA
Google (Gmail)Our support mailboxYour emails to usUSA / worldwide
VercelWebsite hostingIP address, request logs (website only)Global network
Meta Platforms Ireland Ltd. and Meta Platforms, Inc.Ad measurement: app SDK and, with consent, website PixelSee section 2. Never health records.Ireland / USA
OpenAIAd measurement on the website, only with consentPages visited, store clicks, IP address, browser informationUSA

For the Meta Pixel on our website, we and Meta are joint controllers for collecting and sending the data to Meta; what Meta does with it afterwards is covered by Meta's own privacy policy. Meta and OpenAI also use the data under their own policies.

We also share data:

5. Transfers outside the EU

Your app records are stored in the EU. Some providers are based in the United States. For these transfers we rely on the EU–US Data Privacy Framework (European Commission adequacy decision of July 10, 2023) when the provider is certified, and otherwise on the Standard Contractual Clauses approved by the European Commission (Art. 46 GDPR).

6. Advertising, cookies and similar tools

On the website

In the app

The app does not use cookies. It includes the Meta SDK, which sends Meta the data listed in section 2 to measure our ads.

7. How long we keep it

We may keep anonymous, aggregated statistics that no longer identify anyone.

8. How we protect it

No system is 100% secure. If a breach puts your data at risk, we will notify the authority and, where required, you, as set out in Articles 33 and 34 GDPR.

9. Minors

Sereno is intended for people aged 18 or over. We do not knowingly collect data from minors. If you think a minor has given us their data, write to us and we will delete it.

10. Your rights

Under the GDPR you can ask us at any time to:

Write to supportserenopet@gmail.com. We reply within one month; for complex requests this can be extended by two more months, and we will tell you why. You also have the right to lodge a complaint with a supervisory authority: in Italy, the Garante per la protezione dei dati personali, or the authority of the EU country where you live or work.

11. US, UK and Australian users

United States. If you live in a US state with a consumer privacy law (such as California, Colorado, Connecticut, Virginia or Utah), you can ask to know, access, correct and delete your personal information, and you will not be discriminated against for doing so. We do not sell personal information for money. Our use of Meta and OpenAI to measure ads may count as "sharing" or "targeted advertising" under some of these laws: you can opt out by declining cookies on the website, by not allowing tracking on iPhone, by deleting your Advertising ID on Android, or by writing to us. We do not use sensitive personal information to infer characteristics about you. An authorised agent can make a request for you by email.

United Kingdom. You have the same rights under the UK GDPR and can complain to the Information Commissioner's Office (ICO).

Australia. We handle your data in line with the Australian Privacy Principles. Write to us first; if you are not satisfied, you can complain to the Office of the Australian Information Commissioner (OAIC).

12. Changes to this policy

When we update this policy we change the date at the top. If the changes are important, we will tell you in the app or by email before they apply.

13. Contact us

Ivan Salgarello — Sereno (sole trader)
Via Tombola 6, 37053 Cerea (VR), Italy
VAT no. IT05070290233
Email: supportserenopet@gmail.com
Website: serenopet.com