Butto Privacy Policy

Introduction

This Privacy Policy describes how Butto ("we", "our", or "us") collects, uses, and protects your information when you use our mobile application Butto (the "App").

Information We Collect

Personal Information

Butto collects the following information that you voluntarily provide:

• Nickname: Displayed on your profile card shared with friends

• Profile photo and background image: Stored securely in Firebase Storage

• Timezone and location: Used to display your local time and weather to friends

• Status message: Shown on your profile card

This information is only shared with friends you explicitly connect with through the app.

Non-Personal Information

We may collect anonymous, non-personal information through Firebase Analytics, including:

• App usage statistics

• Device information (device model, operating system)

• Country and language settings

• App performance data

How We Use Information

Profile & Social Features

The information you provide is used to:

• Create and display your profile card to connected friends

• Show your local time and weather to friends

• Enable emoji reactions between friends

Analytics

We use Firebase Analytics to understand how users interact with our app. This helps us:

• Improve app performance

• Fix bugs and issues

• Enhance user experience

• Make informed development decisions

Notifications

We use Firebase Cloud Messaging (FCM) to send:

• Emoji reactions from friends

• Friend request notifications

Data Storage

Local Storage

Your friend list, app settings, and cached profile data are stored locally on your device. This data remains under your control.

Cloud Storage

The following data is stored in Firebase (Google Cloud):

• Your profile information (nickname, timezone, status)

• Profile photo and background image

• Friend connection records

• FCM tokens for push notifications

Third-Party Services

Firebase

We use the following Firebase services:

• Firebase Authentication: Anonymous sign-in for user identification

• Firebase Firestore: Storing profile and friend data

• Firebase Storage: Storing profile and background images

• Firebase Cloud Messaging: Push notifications

• Firebase Analytics: Anonymous usage statistics

Data Sharing

We do not share, sell, or trade your personal information with third parties, except:

• As required by law

• To comply with legal processes

• To protect our rights and safety

Your profile information is only visible to friends you have connected with through the app.

Data Deletion

You can delete your data by:

• Uninstalling the app (removes locally stored data)

• Contacting us to request deletion of your Firebase data

Children's Privacy

Butto is intended for users aged 13 and older. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe your child has provided us with personal information, please contact us immediately.

Data Security

We implement appropriate security measures to protect your information:

• Secure Firebase infrastructure

• Encrypted network communications

• Regular security updates

Your Rights

You have the right to:

• Access your data (stored locally and in Firebase)

• Delete your data (by uninstalling or contacting us)

• Opt out of analytics (through device settings)

Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy in the app and updating the "Last Updated" date.

Contact Information

If you have any questions about this Privacy Policy, please contact us:

• Email: wendoei57@gmail.com

• Developer: Jihye Kim

Last Updated

April 4, 2026

Consent

By using Butto, you consent to this Privacy Policy. If you do not agree with this policy, please do not use our app.