Privacy Policy

Last updated: 29 April 2026

      The short version: FuelHound has no accounts, no analytics, no advertising, and no crash reporting. Your GPS coordinates are processed on your device only — they are never transmitted to Lunaire Labs or to any third party. The only server of ours your device contacts is a cached copy of the UK government's public Fuel Finder feed, which contains no information about you. Our website and that feed endpoint do not retain access logs — we don't record your IP, the requests you make, or any other visit data. Everything else is stored locally on your phone.
    

1. Who this policy applies to

This Privacy Policy applies to FuelHound, an Android application published by Lunaire Labs Limited ("Lunaire Labs", "we", "us"). It also applies to this website, fuelhound.lunairelabs.uk.

Although Lunaire Labs is established in the United Kingdom and the UK GDPR is the primary regulatory framework for our processing, FuelHound is offered to users across the European Economic Area (the app currently supports France, Germany, Spain, Italy, Portugal and Austria in addition to the United Kingdom). Where you are located in the EEA, the EU General Data Protection Regulation (Regulation (EU) 2016/679, "EU GDPR") also applies in parallel to the limited processing described in this policy.

2. Data Controller

For the purposes of the UK General Data Protection Regulation (UK GDPR), the EU General Data Protection Regulation (EU GDPR, where applicable to EEA users) and the Data Protection Act 2018, the data controller is Lunaire Labs Limited, a company registered in England and Wales (company no. 17137604). Lunaire Labs Limited is not VAT-registered. Registered office and other statutory details are publicly available on the Companies House register at Companies House. Contact: .

In practice, because FuelHound does not collect, receive, or process any personal data on any Lunaire Labs server — and because the fuelhound.lunairelabs.uk website and the UK fuel-data endpoint retain no access logs or other record of your visit (see Section 9(a)) — the obligations of a data controller in respect of personal data are minimal. All app processing occurs exclusively on your device under your sole control. This policy is provided in the interests of full transparency.

This website is a marketing page and does not itself sell or fulfil anything. FuelHound is distributed exclusively through the Google Play Store; Google processes the one-time purchase transaction under its own terms.

3. Location Data

FuelHound asks for location permission so the map can centre on where you are and sort "nearest stations" by distance. Your GPS coordinates are processed entirely on your device and are never sent to Lunaire Labs or any other party. FuelHound's code contains no analytics, no telemetry, and no endpoint that receives location data.

Granting location permission is optional. If you decline, FuelHound still works — you can pan the map manually, pick a country in Settings, or type a place name in the search bar. Only the "centre on my location" and "nearest stations" distance-sort features require the permission.

4. Data We Collect

We collect no personal data whatsoever on any Lunaire Labs server.

Data Type	Collected by us?	Details
Name, email, address	No	Never requested, never stored
Location / GPS	No	Used on-device only; never transmitted
Device identifiers	No	No hardware IDs, UUIDs, or fingerprints
IP address (app)	No	FuelHound does not contact any Lunaire Labs server from the app itself, except the UK feed endpoint described in Section 6
Usage / behavioural data	No	No analytics, telemetry, or event tracking
Crash reports	No	No crash reporting SDK or service
Advertising identifiers	No	No advertising SDK
Payment information	No	Handled entirely by Google Play

5. Data Stored Locally on Your Device

FuelHound stores the following on your device only, using Android's standard preference store (DataStore) and the app's private data directory:

Preferences: Your selected country, preferred fuel type, preferred brand filter, theme choice, trial / unlock flags.
Last map position: The latitude / longitude and zoom of where you last panned the map, so re-opening the app returns you to the same view.
Cached station data: A compressed copy of the national fuel-price feed for each country you've visited, so the map loads instantly next time. This is public data from official government feeds — no personal information is cached.
Favourites: Any stations or places (home, rental return, holiday home, etc.) that you mark as favourites, stored locally.

All of the above is stored in the app's private storage directory, which is not accessible to other apps under normal Android security.

6. Network Communication

FuelHound fetches fuel-price data from public open-data feeds published by national governments and transparency schemes. With one exception (the UK feed, described below) these requests are made directly from your device to third-party endpoints and do not pass through any Lunaire Labs server. No personal information about you is sent with these requests beyond the standard HTTP headers your device would send for any web request (user-agent string, and the IP address visible to the destination server).

The feeds FuelHound contacts are:

United Kingdom: A single endpoint on fuelhound.lunairelabs.uk serving a gzipped copy of the Department for Energy Security and Net Zero (DESNZ) Fuel Finder open-data snapshot, published under the Motor Fuel Price (Open Data) Regulations 2025 (SI 2025/1356, made under the Data (Use and Access) Act 2025). The snapshot contains only public station data (name, address, brand, fuel prices, opening status); it contains no information about you. Although this endpoint sits on a server Lunaire Labs operates, the server is configured not to retain any access log of requests to this endpoint — your IP address, request line, headers and timestamp are not written to disk (see Section 9(a)).
France: prix-carburants.gouv.fr (Ministère de l'Économie, des Finances et de la Souveraineté industrielle et numérique).
Germany: Markttransparenzstelle für Kraftstoffe (MTS-K), operated by the Bundeskartellamt. The app accesses the data via the Tankerkönig API (creativecommons.tankerkoenig.de), a public redistribution endpoint for MTS-K.
Spain: geoportalgasolineras.es (Ministerio para la Transición Ecológica y el Reto Demográfico — MITECO).
Italy: Osservaprezzi Carburanti (Ministero delle Imprese e del Made in Italy — MIMIT).
Portugal: precoscombustiveis.dgeg.gov.pt (Direção-Geral de Energia e Geologia — DGEG).
Austria: spritpreisrechner.at (E-Control).
Maps: OpenFreeMap vector tiles (tiles.openfreemap.org) and OpenStreetMap Nominatim for place-name search (nominatim.openstreetmap.org). Map tiles © OpenFreeMap. OpenStreetMap data is contributed by volunteers and provided under the Open Database Licence (ODbL).
Google Play Billing: For the optional one-time £2.99 Lifetime unlock.

Each of those services has its own privacy policy. Lunaire Labs does not receive a copy of your request, the server's response, or any derived data — not even for the UK feed described above, which sits on a server we operate but which is configured not to retain any access log of requests (see Section 9(a)).

7. Analytics, Tracking, and Advertising

FuelHound does not include, integrate, or utilise any of the following:

Analytics services (e.g., Firebase Analytics, Google Analytics, Mixpanel, Amplitude)
Crash reporting services (e.g., Firebase Crashlytics, Sentry, Bugsnag)
Telemetry or usage tracking of any kind
Advertising networks or ad SDKs
Social media tracking pixels or widgets
A / B testing frameworks
Heat mapping or session recording tools
Any third-party code that collects or transmits user data

8. Permissions

FuelHound requests only the minimum permissions it needs. Each is used for local functionality only.

Permission	Purpose	Data transmitted?
Internet	Fetching fuel-price data from public open-data feeds and map tiles	Standard HTTP requests to the public feed endpoints only — no personal data attached
Location (Fine / Coarse)	Centring the map on your current location and calculating distance to nearby stations	No — GPS coordinates stay on your device; they are never sent to Lunaire Labs or any third party
Access Network State	Detecting whether the device has network connectivity before attempting a fetch	No
Billing	Google Play Billing, for the optional one-time £2.99 Lifetime unlock	Handled entirely by Google Play

No permission is used to collect, transmit, or share any personal data with Lunaire Labs. Location, where granted, is used entirely on-device.

9. Website Visitors

When you visit fuelhound.lunairelabs.uk, the following information may be processed:

(a) Web server logs

We do not retain access logs of your visit, or of the FuelHound app's fetches from the UK fuel-data endpoint described in Section 6. Our web server (nginx) is configured with access_log off for fuelhound.lunairelabs.uk, which means no per-request log line — including your IP address, the page or endpoint you requested, the time of the request, the referring URL, or your user-agent string — is written to disk. Routine error events that would normally include client IPs are also discarded (error_log /dev/null crit); only critical-level events such as nginx startup or fatal server errors reach the global error log, and those entries are not associated with any individual visitor.

Because no personal data is collected in connection with your visit or with the app's fetches, no Article 6 legal basis is required for this processing — there is no processing of personal data to base. Your IP address may transit the server in memory while a TCP connection is open, in the same way it must transit any router between you and the server, but it is not recorded, retained, analysed, profiled, shared, or used for any purpose.

Hosting provider. The fuelhound.lunairelabs.uk website and the UK fuel-data endpoint are hosted by Hostinger International Ltd on a virtual private server currently located in Manchester, United Kingdom. Hostinger does not receive any personal data from us in connection with your visit or your app's data fetches, because we collect none. Hostinger's own infrastructure logging (e.g. firewall, DDoS protection) is governed by their privacy policy and is outside our control.

(b) Fonts

Fonts used on this website are self-hosted by Lunaire Labs (served from the same domain as the rest of the site). No third-party font CDN is contacted.

(c) External images

Marketing pages may display the official "Get it on Google Play" badge image loaded from Google (play.google.com). When your browser requests that image, your IP address may be logged by Google in accordance with Google's Privacy Policy. This is the only third-party request made by this website.

(d) Cookies and tracking

This website does not use cookies, local storage, session storage, or any other browser-based tracking mechanism. No consent banner is displayed because none is required under the Privacy and Electronic Communications Regulations (PECR).

(e) No analytics or advertising

This website does not use any analytics services, advertising networks, social-media tracking pixels, heat mapping tools, A / B testing frameworks, or any other form of visitor tracking or behavioural profiling.

10. No account required

FuelHound does not require you to create an account, provide an email address, enter a phone number, or sign in with any service (Google, Facebook, Apple, or any other). The app works entirely without any personal identifier linking usage to you.

11. Third-Party Services

(a) Google Play Store

FuelHound is distributed through the Google Play Store. If you purchase the Lifetime unlock, that transaction is processed and managed entirely by Google. Google may collect data in accordance with their own privacy policy. We do not have access to your payment details, Google account information, or any personal data held by Google. See Google's Privacy Policy for details.

(b) Public open-data feeds

FuelHound fetches fuel-price data from the public open-data feeds listed in Section 6, and map data from OpenFreeMap and OpenStreetMap. Those services operate independently of Lunaire Labs. When your device contacts them, standard HTTP metadata (including your IP address as seen by the destination server) may be logged by the operator of that service. Lunaire Labs has no access to those logs.

12. Children's Privacy

FuelHound is not directed at children. The minimum age of use matches Google Play's minimum-age policy for the territory (13 in the United Kingdom, per s.9 Data Protection Act 2018). Users in EU jurisdictions where the age of consent for information-society services under Article 8 UK/EU GDPR is set higher (up to 16) must meet that local minimum. We do not knowingly collect any personal data from any person, including children. Since the app collects no data at all on our side, no age-verification mechanism is necessary. If you believe that a child has somehow provided personal data to us, please contact us at .

13. Your Rights Under UK GDPR and EU GDPR

Under the UK GDPR, the EU GDPR (where you are located in the EEA) and the Data Protection Act 2018, you have the following rights:

Right of access — to request a copy of personal data we hold about you.
Right to rectification — to have inaccurate personal data corrected.
Right to erasure — to request deletion of your personal data.
Right to restrict processing — to request that we limit how we use your data.
Right to data portability — to receive your data in a structured, machine-readable format.
Right to object — to object to certain types of processing.
Rights related to automated decision-making — the right not to be subject to decisions based solely on automated processing.

In practice, these rights have little to act on because Lunaire Labs does not collect, receive, or hold any personal data from you. FuelHound does not transmit any personal data to Lunaire Labs — all app data is under your sole control on your device and can be removed at any time using the system-level "Clear storage" action or by uninstalling the app (see Section 14). The fuelhound.lunairelabs.uk website and the UK fuel-data endpoint do not retain access logs or any other record of your visit, as described in Section 9(a). If you nonetheless wish to make a formal data-protection request, email with "Data request" in the subject and we will respond within one month as required by Article 12(3) UK GDPR / EU GDPR.

14. Data Deletion

Because all app data is stored locally on your device, you have complete and sole control over it at all times. You can delete everything FuelHound has stored by:

Using your device's Settings → Apps → FuelHound → Storage → Clear Storage; or
Uninstalling the app, which removes all associated data.

We cannot delete your data for you because we do not have it and have never had it.

15. Data Security

Because the app stores data locally and does not transmit personal data, the security of that data is determined by the security measures on your own device (e.g., screen lock, device encryption, biometric authentication). We recommend keeping your device's operating system and security patches up to date.

16. Data Breach Notification

Because we do not collect, process, or store personal data on any server or cloud service — not even web-visit or app-fetch logs — a data breach originating from our systems is not possible in the usual sense. We have no databases, cloud storage, or back-office systems holding personal data that could be compromised. In the extremely unlikely event that we become aware of any security incident affecting any aspect of our operations, we will promptly assess the situation and, if required by applicable law, notify affected individuals and the Information Commissioner's Office (ICO) within the timeframes prescribed by the UK GDPR.

17. International Data Transfers

Lunaire Labs does not transfer personal data internationally or otherwise, because we do not collect personal data. The FuelHound app stores all data exclusively on your device in the country where you use it. The fuelhound.lunairelabs.uk website and the UK fuel-data endpoint retain no access logs or other record of your visit. Network requests FuelHound makes to public open-data feeds for other countries may originate from whichever country your device is in and will terminate at the endpoint's server (most of which are within the EEA or the UK); those requests do not include personal data and Lunaire Labs has no access to any logs those third-party services may keep on their side. As a matter of factual disclosure, the UK fuel-data endpoint and this website are operated by Hostinger International Ltd from a data centre in Manchester, United Kingdom (see Section 9(a)).

18. Legal Basis for Processing

Under Article 6 of the UK GDPR / EU GDPR, any processing of personal data requires a legal basis. Because Lunaire Labs does not collect or process any personal data — including IP addresses, web-visit data, or app-fetch data — on any server or remote system, no Article 6 legal basis is required on our part. All app processing occurs locally on your device under your sole control. This section is included for completeness and transparency.

19. Complaints

If you have any concerns about how your data is handled, you have the right to lodge a complaint with the Information Commissioner's Office (ICO):

Website: ico.org.uk
Phone: 0303 123 1113
Post: Information Commissioner's Office, Wycliffe House, Water Lane, Wilmslow, Cheshire, SK9 5AF

If you are located in the European Economic Area, you may also lodge a complaint with the data protection supervisory authority of your country of habitual residence, your place of work, or the place of an alleged infringement, in accordance with Article 77 EU GDPR. A list of EEA supervisory authorities is maintained by the European Data Protection Board at edpb.europa.eu.

We would appreciate the opportunity to address your concerns before you contact a supervisory authority. Please reach out to us first at .

20. Changes to this Policy

We may update this Privacy Policy from time to time to reflect changes in our practices, technology, legal requirements, or other factors. The most current version will always be available at fuelhound.lunairelabs.uk/privacy. Material changes will be indicated by updating the "Last updated" date. Since we do not collect any contact information, we cannot notify you directly; we encourage you to review this page periodically. Significant changes may also be communicated through app update release notes on Google Play.

21. Contact

Questions about this Privacy Policy? Email .