Privacy policy
Last updated 10 November 2026
Butterboo is an app for couples to play, plan and care together. It is run by Guruprasad Chandrahas Shetty and Riya Sumit Tanksali, Mumbai, India ("we"). This policy explains what we collect, why, and the choices you have.
The short version
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We collect only what the app needs to work for you and your partner.
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What you share in Butterboo is visible only to you and your partner. Not to other users, and not to advertisers.
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We don't show ads, and we don't sell or rent your data.
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You can delete your account and your data at any time from the Me tab.
What we collect
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Your email address, to sign you in with a one-time code or with Google.
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If you sign in with Google: Google shares your name, email address and profile picture with us. We use the email to sign you in and your first name to suggest your Butterboo name. We don't use the picture.
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Your name or nickname, so your partner sees who you are.
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Your couple details (the date you got together, your invite code), to connect you with your partner and show your days-together counter.
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How you identify and what kind of couple you are, so we can show you the right features, like the period tracker. "Prefer not to say" is always an option. Your gender is visible only to you, not your partner; the couple type is visible to both of you.
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What you add: moods, sleep status, hugs and notes, special dates, spending entries, bucket list items, answers to daily questions, the games you play, your shared pet, your character's look in the house, and the goals you set with their progress and any reasons given. This is the app: it's shared with your partner.
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Period tracker (optional): the periods you log, an optional daily log (flow, cramps, energy, mood and private notes), your settings, and any "what would help today?" requests you send. This is health information, so we ask for your agreement before you start, and it's private to you by default:
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Being paired with someone shares nothing. You choose each part: whether your period is on (with what usually helps you), and your next-period estimate when it's within a week. Your daily log, notes and history are never shared.
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Sharing is given to one person. If you unpair, it ends straight away and a new partner would need your fresh permission. Stopping sharing can't undo what your partner has already seen.
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A care request shows only what you picked, never dates, and disappears after 12 hours.
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Estimates come only from the dates you log. They don't detect ovulation and aren't birth control.
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You can download all of it, delete any entry, or delete all cycle data at any time from the tracker, without deleting your account. Deleting all cycle data also takes back your agreement.
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It's stored in our Supabase database in Mumbai, encrypted in transit and on disk. It is not end-to-end encrypted: like the rest of Butterboo, it's protected by our database's access rules, and we only look at it if you ask us to fix something or the law requires it. It's kept out of our usage numbers and error reports, and isn't used for the shared cat or any score.
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Basic technical information: device and browser type, and error reports, to keep the app secure and fix problems.
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IP addresses, which reach our service providers when your device connects, to deliver the app and stop attacks.
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Counts of how the app is used, to see what's working.
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A record of what you agreed to and when, and that you confirmed you're 18 or older.
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Waitlist emails, if you joined before we opened, to tell you about Butterboo. Email us to be removed.
We don't collect your contacts, location, photos or microphone. If you turn on notifications, we store a notification address for that device (from your browser's push service) and which kinds of notifications you want. Turning notifications off, signing out or deleting your account removes it.
Who can see it
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Your partner sees what you share in the app, as described on each screen, but never your gender or your period dates. Daily question answers are shown to your partner only after they've answered too.
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Nobody else using Butterboo can see your data.
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Service providers who help us run Butterboo process data only on our instructions:
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Supabase: our database and sign-in, stored in Mumbai, India.
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Resend: sends our sign-in emails. Emails pass through servers in Tokyo, Japan.
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Google: if you choose "Continue with Google", Google confirms who you are.
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Cloudflare: hosts the website and protects it from attacks, through servers around the world, so your connection may be handled outside India.
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GitHub: keeps our nightly backups for 30 days, outside India (GitHub is a US company). Each backup is locked with a password only we have (AES-256 encryption) before it reaches GitHub, so GitHub can't read it.
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Your browser's push service (Google for Chrome and Android, Apple for iPhone and Safari, Mozilla for Firefox): delivers notifications you've turned on. The notification text is encrypted so only your device can read it.
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The law: we may share data if Indian law requires it, for example a valid order from a court or authority.
How long we keep it
We keep your data while your account exists. When you delete your account, we delete your profile, sign-in, notification settings and everything you added straight away. Copies in our security backups (made every night) disappear within 30 days. We keep something longer only if the law requires it. Error reports are deleted after 90 days. If you unpair, what you added stays with your partner unless you delete your account.
Your rights
Under the Digital Personal Data Protection Act, 2023, you can:
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see what personal data we hold about you;
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correct or update it (your name and dates are editable in the app);
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delete your data: Me → Delete my account;
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take back your consent at any time, one piece at a time (see below);
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nominate someone to exercise these rights if you can't;
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raise a complaint with our Grievance Officer, and if you're not satisfied, with the Data Protection Board of India.
To see or correct your data, or to nominate someone to act for you, email hello@butterboo.app from the address you sign in with. We use that address to confirm it's you.
Taking back consent: you can stop sharing or delete all cycle data in the tracker, turn off notifications in Me, unpair in Me, or delete your whole account in Me. Taking back consent doesn't affect what happened before it.
Grievance Officer: Guruprasad Chandrahas Shetty, hello@butterboo.app. We reply within 7 days.
Children
Butterboo is for people aged 18 and over, and we ask you to confirm that before you start. We don't knowingly collect data from children. If you think someone under 18 is using Butterboo, email hello@butterboo.app and we'll delete the account.
Security
Your data is sent over encrypted connections. Our database only lets each couple see their own records. We only look at what you've added when you ask us to fix something, when it has been reported to us as harmful, or when the law requires it.
If your data is ever exposed, we'll tell you without delay in the app or by email: what happened, what it could mean for you, what we're doing and what you can do. We'll also report it to the Data Protection Board of India.
Changes
If we change this policy in an important way, we'll tell you in the app before the change takes effect.
Contact
Email us at hello@butterboo.app.