Cookies and Other Technologies
This policy explains how Xder uses cookies, SDKs, technical identifiers and similar technologies when you use our application or website.
Our goal is to guarantee at the same time:
proper functioning of the service
community safety
international privacy compliance (GDPR and equivalent laws)
real user control over personal data
1. Technologies we use
Xder uses different technical technologies necessary to operate the service.
Cookies and local storage
Small files stored in your browser or device to maintain sessions and preferences.
Mobile SDKs (Software Development Kits)
Libraries integrated in the app required for:
payments
security
notifications
performance
install attribution
All SDKs are configured under the data minimization principle.
Xder does not allow the collection of permanent hardware identifiers (IMEI, MAC address or equivalent).
APIs
Secure connections with external services (Apple Login, Google Login, payment providers).
Pixels and aggregated measurement
Used only to understand if a campaign works, without identifying individual users.
This is performed using aggregated attribution, not individual tracking.
Operating system identifiers
IDFA (Apple)
GAID (Android)
Used only if the user grants advertising permission.
2. Classification and duration
Session cookies
Automatically deleted when you close the app or session.
Persistent cookies
Maximum duration of 12 months.
After that period, we will request consent again.
Third-party cookies
Managed by necessary service providers (e.g., payments or analytics) under their own privacy policies.
3. Processing purposes
A. Strictly Necessary Technologies (no consent required)
Required to provide the service. Cannot be disabled.
Includes:
user authentication
account security
bot and fraud prevention
banned account blocking (irreversible hash)
message delivery
ephemeral chat functionality
anti-spam limits
platform stability
If disabled, Xder cannot function.
B. Performance and analytics (consent required in EU/UK)
Used to:
detect crashes
improve speed
understand feature usage
Data is processed in aggregated or anonymized form.
C. Functional technologies
Remember preferences:
language
privacy settings
filters
read status
D. Advertising and measurement
Only with explicit consent:
show relevant ads
avoid excessive repetition
measure campaign effectiveness
4. Technical privacy safeguards
Fingerprinting prohibition
Xder contractually prohibits partners from:
identifying devices through fingerprinting techniques, even if tracking is rejected.
Metadata minimization
Our SDKs are configured to avoid collecting:
MAC address
IMEI
hidden persistent identifiers
unique hardware parameters
No resale of data
Our providers cannot:
sell data
share it with third parties
use it for their own purposes
Limited use
We do not use tracking technologies for:
financial profiling
predicting behavior outside Xder
sensitive targeting
5. Push notifications
We use:
Apple Push Notification Service (APNs)
Firebase Cloud Messaging (FCM)
These services process technical information necessary to deliver notifications.
You may change notification privacy in your device settings.
6. User control
Preference Center
Settings → Privacy → Cookies & SDKs
You can:
accept or reject analytics
accept or reject personalized ads
withdraw consent anytime
System signals
Xder automatically respects:
Apple App Tracking Transparency
Android privacy settings
Global Privacy Control (GPC)
Do Not Track
These override internal settings.
Identifier reset
You can reset:
IDFA
GAID
From your operating system settings.
7. Consequences of rejecting cookies
Rejecting non-essential technologies:
does not affect matches
does not reduce visibility
does not change the matching algorithm
Only advertising personalization is disabled.
8. Account deletion and purge
When you delete your account:
a purge signal is sent to providers
identifiers are unlinked
data may be irreversibly anonymized for statistics
After anonymization, the data is no longer personal data.
9. Policy changes
We may update this policy for legal or technical reasons.
If changes are material, we will notify you inside the app.