Cookies Policy
Last updated: April 7, 2026
1. Introduction
This Cookies Policy explains how SmashTech Ltd ("Company", "we", "us", "our") uses cookies and similar technologies on the Tails Up website at https://tailsup.gr ("Website") and the Tails Up mobile application ("App").
This policy should be read together with our Privacy Policy, which provides further details on how we process your personal data.
2. What Are Cookies?
Cookies are small text files that are placed on your device (computer, tablet, or smartphone) when you visit a website. They are widely used to make websites function properly, improve performance, and provide information to the website operators.
Cookies can be:
- First-party cookies: Set by the website you are visiting (tailsup.gr).
- Third-party cookies: Set by a domain other than the one you are visiting (e.g., analytics or payment providers).
- Session cookies: Deleted when you close your browser.
- Persistent cookies: Remain on your device for a set period or until you delete them.
3. Cookies We Use on the Website
3.1. Strictly Necessary Cookies
These cookies are essential for the Website to function. They cannot be disabled without affecting the usability of the Website. No consent is required for these cookies under EU law (Directive 2002/58/EC as amended by Directive 2009/136/EC).
| Cookie / Technology | Provider | Purpose | Duration | Type |
|---|---|---|---|---|
| Session cookie | tailsup.gr | Authenticates your session after login. Contains an encrypted session token that identifies you to the server. | 14 days | First-party, Persistent |
| CSRF token | tailsup.gr | Protects against cross-site request forgery attacks. | Session | First-party, Session |
| Firebase Auth tokens | Firebase (Google) | Manages authentication state. Stores encrypted tokens to keep you signed in. | Session / refresh-based | First-party, Persistent |
| Accept-Language | tailsup.gr | Stores your language preference (English or Greek) to serve content in your preferred language. | Session | First-party, Session |
3.2. Analytics Cookies
These cookies help us understand how visitors use the Website, which pages are most popular, and how users navigate between pages. This information helps us improve the Website. These cookies require your consent.
| Cookie / Technology | Provider | Purpose | Duration | Type |
|---|---|---|---|---|
| PostHog analytics | PostHog (eu.i.posthog.com) | Tracks anonymised usage events such as page views, feature usage, and navigation patterns to improve the Service. Data is processed in the EU. | Up to 24 months | First-party (proxied) |
| Firebase Analytics | Collects anonymised usage data including session information and feature interactions. | Up to 24 months | Third-party | |
| Google Analytics (_ga, _gid) | May be used for website traffic analysis. Collects anonymised data about page visits, traffic sources, and user behaviour. | _ga: 24 months, _gid: 24 hours | Third-party |
Note: Some analytics services listed above may be configured but not actively deployed. We will update this policy when new analytics services are activated.
3.3. Functional Cookies
These cookies enable enhanced functionality and personalisation. These cookies require your consent.
| Cookie / Technology | Provider | Purpose | Duration | Type |
|---|---|---|---|---|
| Theme preference | tailsup.gr | Remembers your preferred visual theme (light or dark mode). | Persistent | First-party |
| Locale preference | tailsup.gr | Remembers your preferred language setting across sessions. | Persistent | First-party |
3.4. Third-Party Service Cookies
Some third-party services integrated into the Website may set their own cookies:
| Service | Purpose | More Information |
|---|---|---|
| Stripe | Payment processing. Stripe may set cookies during checkout to manage payment sessions, prevent fraud, and comply with payment regulations. | Stripe Cookie Policy |
| Firebase | Authentication and analytics. Firebase may use cookies and similar technologies for session management and analytics. | Google Privacy Policy |
4. Similar Technologies on the Mobile App
The Tails Up mobile application does not use traditional browser cookies. Instead, it uses the following similar technologies for equivalent purposes:
4.1. Essential Storage
| Technology | Purpose | Data Stored |
|---|---|---|
| Secure Store (encrypted) | Securely stores authentication credentials on your device. | API access token, refresh token, token expiration, biometric enrolment settings |
| Firebase Auth SDK | Manages authentication state within the app. | Encrypted auth tokens, session state |
4.2. Functional Storage
| Technology | Purpose | Data Stored |
|---|---|---|
| AsyncStorage | Stores your app preferences and cached data for performance. | Theme preference (light/dark), language preference, cached pet data, cached event types, feeding plan data, calendar state |
4.3. Analytics SDKs
| Technology | Provider | Purpose |
|---|---|---|
| PostHog SDK | PostHog (EU) | Product analytics — tracks anonymised feature usage events to improve the app. Disabled in development. Data processed in EU (eu.i.posthog.com). |
| Firebase Analytics | Anonymised usage analytics and feature interaction tracking. | |
| Sentry SDK | Sentry | Error and crash reporting — captures technical errors to help us fix bugs. May include device information and user context. |
4.4. Push Notification Tokens
| Technology | Provider | Purpose |
|---|---|---|
| Firebase Cloud Messaging (FCM) | Delivers push notifications to your device. A unique device token is generated and stored on our servers to enable notification delivery. |
5. How We Use Cookies and Similar Technologies
We use cookies and similar technologies to:
- Authenticate you and maintain your logged-in session.
- Remember your preferences such as language and theme.
- Protect the security of your account and our Service.
- Understand usage patterns to improve features and user experience.
- Diagnose technical issues and fix bugs.
- Process payments securely through our payment providers.
6. Your Choices and How to Manage Cookies
6.1. Cookie Consent (Website)
When you first visit our Website, you will be presented with a cookie consent notice. You can choose to:
- Accept all cookies — all cookie categories will be activated.
- Accept only necessary cookies — only strictly necessary cookies will be used.
- Customise your preferences — select which categories of cookies you wish to allow.
You can change your cookie preferences at any time through the cookie settings on the Website.
6.2. Browser Settings
Most web browsers allow you to manage cookies through their settings. You can typically:
- View what cookies are stored on your device.
- Delete individual cookies or all cookies.
- Block cookies from specific or all websites.
- Set your browser to notify you when a cookie is set.
Please note that disabling essential cookies may affect the functionality of the Website, and you may not be able to use certain features (such as logging in).
Browser-specific instructions:
- Chrome: Settings > Privacy and Security > Cookies and other site data
- Firefox: Settings > Privacy & Security > Cookies and Site Data
- Safari: Preferences > Privacy > Manage Website Data
- Edge: Settings > Cookies and site permissions > Cookies and site data
6.3. Mobile App Settings
For the mobile app, you can manage data collection through:
- Push notifications: Disable via device settings (Settings > Notifications > Tails Up) or in-app notification preferences.
- Location data: Revoke location permission via device settings (Settings > Privacy > Location Services > Tails Up).
- Analytics: Contact us at privacy@tailsup.gr to opt out of analytics tracking.
- Clear app data: You can clear the app's local storage through your device settings, which will remove cached preferences and data (you will need to log in again).
6.4. Do Not Track
Some browsers offer a "Do Not Track" (DNT) signal. There is currently no industry standard for how websites should respond to DNT signals. We will update this policy if a standard is established and adopted.
6.5. Opt-Out of Analytics
You can opt out of specific analytics services:
- PostHog: Contact us at privacy@tailsup.gr.
- Google Analytics: Install the Google Analytics Opt-Out Browser Add-on.
- Firebase Analytics: Managed through your device's advertising settings (Limit Ad Tracking on iOS, Opt Out of Ads Personalisation on Android).
7. Data Retention for Cookies
| Cookie Type | Retention |
|---|---|
| Session cookies | Deleted when you close your browser |
| Authentication cookies | Up to 14 days |
| Analytics data | Up to 24 months |
| Preference cookies | Until you clear them or change preferences |
| Mobile secure storage | Until you log out or clear app data |
| Mobile async storage | Until you clear app data or uninstall |
8. Updates to This Policy
We may update this Cookies Policy from time to time to reflect changes in the cookies we use or for legal, operational, or regulatory reasons. We will notify you of material changes by posting the updated policy on the Website with a new "Last Updated" date.
We encourage you to review this policy periodically.
9. Contact Us
If you have any questions about our use of cookies or similar technologies, please contact us:
SmashTech Ltd Athens, Greece
- Privacy Inquiries: privacy@tailsup.gr
- General Support: support@tailsup.gr
- Website: https://tailsup.gr