Cookie Policy
Last updated: 1 June 2026
1. What Cookies Are
A cookie is a small text file that a website places on your device when you visit it. Cookies let the site remember information about your visit — your preferences, whether you are signed in, and how you interact with the page — so it can work properly and improve over time.
This policy explains which cookies and similar technologies (local storage, session storage, pixels, SDKs) Sparkling uses, why we use them, and how you can control them. It applies to the marketing site at sparkl.ing and to the Sparkling product surfaces (the Telegram mini-app and the web app at the same domain).
2. Categories of Cookies We Use
2.1 Strictly necessary
Required for the Service to function. Without them parts of the site or app will not work. We rely on legitimate interest for these — they cannot be switched off.
- Session and authentication tokens — keep you signed in to the Sparkling app while you trade, sign quotes, or review balances.
- Security cookies — protect against cross-site request forgery (CSRF), bot abuse and account takeover.
- Load-balancing cookies — route your requests to the nearest healthy server.
2.2 Functional
Remember the choices you make so the experience feels consistent across visits. Setting them requires your consent under the ePrivacy framework in the EU/EEA.
- Preferences — language, currency display, dark/light theme.
- Recent activity hints — surface your last-used pairs and chains for faster re-entry.
2.3 Analytics
Help us understand how the site and product are used in aggregate, so we can fix slow pages, broken flows, and confusing copy. We use privacy-respecting analytics that do not build cross-site advertising profiles.
- Pageviews, referrer, viewport size and approximate location at country level.
- Anonymised event data — feature usage, error rates, performance metrics.
If your jurisdiction requires consent for analytics, we ask for it before the first analytics call.
2.4 Marketing
We do not currently run third-party ad-targeting cookies. If we add them in the future we will list them here, ask for your consent, and give you the same one-click opt-out as for analytics.
3. Similar Technologies
- Local storage and session storage. Used for non-sensitive preferences and temporary UI state (open panels, draft inputs). They are scoped to your browser and never sent to third parties.
- Pixels and SDK initialisation. Where embedded (for example to load a Telegram WebApp), they are subject to the host platform's own privacy notice.
4. Third-Party Cookies
Some pages embed content from partners — for example a Telegram authentication flow, a wallet-provider widget, or an embedded support chat. Those embeds may set their own cookies that we do not control. We list the integrations we currently rely on in our Privacy Policy § 5.2.
5. How to Control Cookies
5.1 In the consent banner
When you first visit from a jurisdiction that requires it, we show a banner where you can accept all, reject non-essential, or pick categories. You can re-open the banner at any time from the footer link Cookie preferences.
5.2 In your browser
Every major browser lets you block or delete cookies. Some functions of the Service will not work if you block strictly necessary cookies. Useful links:
6. Changes to This Policy
We may update this Cookie Policy from time to time to reflect changes in how we use cookies, in our partners, or in the law. The “Last updated” date at the top will move when we do. Material changes will be highlighted on the site for at least 14 days.
7. Contact
Questions or requests about cookies or related tracking technologies should go to legal@sparkl.ing. Data-protection requests go to our DPO at dpo@sparkl.ing.