On this page
- The short version
- 1. Information we collect
- 2. How we use information
- 3. Location information, in detail
- 4. The service providers we rely on
- 5. How we share information
- 6. Your choices and rights
- 7. How long we keep information
- 8. How we protect information
- 9. Children
- 10. International data transfers
- 11. United States state privacy rights
- 12. Europe, the UK, and Switzerland
- 13. Changes to this policy
- 14. Contact us
Lensmark is operated by DAGNOSTICS LLC ("Lensmark," "we," "us," or "our"). This Privacy Policy explains what information we collect when you use Lensmark, why we collect it, how we use and protect it, and the choices and rights you have. Questions? Email dag@lensmark.ai.
Lensmark turns a photo or a question into a verified, sourced history of what you are looking at: a landmark, a building, a monument, a work of art, or a site. To do that well, we collect the photo, the signals your device attaches to it, and the questions you ask, and we use trusted providers to identify the subject and research its story.
The short version
- We collect the photos you capture or upload, the location and metadata attached to them, the questions you ask, and your account details.
- We use that information to identify what is in your photo, research its verified history, and improve the accuracy of our answers.
- We do not sell your personal information, we do not use it for advertising, and we do not share it between users or hand it to third parties for their own purposes.
- We rely on a small set of named service providers (cloud, AI, and email delivery) that process data to run the Service.
- When you create your account, we name the AI providers that receive your photos. Sending photos to them is how identification works, so it applies to every photo you take.
- You can delete your account, and everything in it, at any time from inside the app.
Information you provide
- Account information. When you sign in, we collect the details from your chosen method: your email address, and depending on the method, your name, profile photo, and the identity provider you used (Sign in with Apple on the iOS app, Google, or an emailed code with an optional password). If you use Apple's Hide My Email, we receive the private relay address Apple creates for you. Sign-in is required; we do not allow anonymous identifications.
- Photos and images. The photos you capture in the app or choose to upload so we can identify their subject.
- Questions and messages. The text you type, captions you add, follow-up questions, and any feedback you send us.
Information attached to your photos and device
- Location information. Photos often carry embedded metadata (EXIF), including GPS coordinates, location accuracy, compass heading, and the time the photo was taken. When you grant permission, we also use your device's live location. We use this precise location to work out where a photo was actually taken and to identify the subject in front of you.
- Camera and photo access. With your permission, Lensmark accesses your camera to take a photo. To use an existing photo, Lensmark opens your device's own picker and receives only the image you choose — it never gains access to your photo library.
- Device and technical information. Device and browser type and settings, operating system, app version, IP address, and language, together with server-side error and performance logs.
- Usage information. How you interact with the Service, including the subjects you identify, the results shown, timing and performance metrics, and error reports.
Information we generate
- Your identification history. A record of the subjects you have identified and your conversations about them, kept with your account so you can revisit them.
- Derived data. Machine representations of your photos and text, including written scene descriptions and numerical embeddings used to match and retrieve information efficiently. Embeddings are computed by OpenAI from scene-description text; OpenAI does not receive your photo or your account identity.
- Provide the Service: identify the subject in your photo, pinpoint where it stands, and produce its verified, sourced history.
- Run our identification pipeline: send your photo and its metadata to the AI and recognition providers listed in Section 4 so they can propose and verify an answer.
- Research and ground answers: run targeted searches keyed to the verified subject, using Anthropic's hosted web search, so that dates, names, and claims come from retrieved sources rather than guesses.
- Improve accuracy and build our knowledge base: use verified identifications to improve our results and to build a shared corpus of knowledge about places and works. This corpus is information about subjects in the world, not information about you. Verified scene descriptions contribute to it as a standard part of the Service; your original photos are never added to it and are never shared.
- Personalize your experience: remember the places you identify and keep your conversations coherent across turns.
- Keep the Service safe: detect and prevent fraud, abuse, and security or technical problems, and enforce our Terms.
- Communicate with you: send service messages such as security alerts and important changes.
- Comply with law: meet legal obligations and respond to lawful requests.
Because location is how Lensmark verifies answers, we want to be specific:
- We read location and related metadata (GPS, accuracy, heading, capture time) from the original photo you provide.
- We use your device's live location only when you grant permission, and only to help identify what is near you.
- A photo chosen from your library that has no location data does not silently borrow your current location; absence of a location signal is treated as absence, not filled in from elsewhere.
- We treat precise geolocation as sensitive information and use it only to provide and improve the Service, never for advertising.
- When you share location, it is sent to Google Places, Google Geocoding, Overpass/OpenStreetMap, and our AI providers (Google Gemini and Anthropic Claude) to distinguish nearby subjects.
You can turn location access on or off at any time in your device or browser settings.
4. The service providers we rely on
To operate Lensmark we use a small set of trusted providers. They handle your information only to return your result and run the Service; we share only what each provider needs to do its job. When you create your account, the app names the AI providers that receive your photos and asks you to agree before you can use the Service. No account information is attached to what we transmit — not your name, your email address, your account identifier, or your history in the app; the providers receive the photograph and, where you have enabled location, the coordinates, and nothing that ties either to you. Identification cannot run without them, so this processing is a condition of using Lensmark rather than an optional setting; if you do not want it, do not create an account, or delete the one you have.
- Cloud infrastructure, database, authentication, edge functions, and private photo storage: Supabase.
- Site delivery: Netlify.
- Sign-in and account email delivery: Resend.
- Payments: Stripe on the web, and Apple in the iOS app. If you buy a plan or a top-up on the web, Stripe receives your payment details, your email address and a Lensmark account identifier so it can attach the purchase to your account and send you a receipt. Card numbers never reach Lensmark's servers: checkout and the billing portal are pages Stripe hosts and operates. In the iOS app, purchases are made through Apple's In-App Purchase and billed by Apple to your Apple Account; your payment details go to Apple and never reach Lensmark's servers. Lensmark receives and verifies Apple's signed transaction data so it can apply the purchase to your account. Lensmark stores only what it needs to know what you are entitled to: the provider's customer, subscription or transaction identifiers, the plan, its status, and how many identifications you have left. Neither provider is involved at all unless you buy something.
- Image recognition and landmark detection: Google Cloud Vision.
- AI identification, scene description, answer synthesis, and conversation handling: Google Gemini.
- Grounded research, including hosted web search: Anthropic (Claude).
- Place resolution and geocoding: Google Places and Google Geocoding.
- Coordinate-based heritage context: Overpass / OpenStreetMap.
- Text embeddings for subject matching: OpenAI, which receives scene-description text only, never your photo or your account identity.
- Subject and source resolution: Wikidata, Wikipedia, and Wikimedia.
- Sign-in identity providers: Google, and Apple on the iOS app, when you choose them to sign in.
Using these providers is not selling or sharing your data with third parties for their own use. It is how the Service functions.
We do not sell your personal information. We do not share it for cross-context or targeted advertising. We do not share your personal information between users. Your photos, your questions, and your place history are yours and private to you.
We share information only in these limited situations:
- With service providers, as described in Section 4, who process it on our behalf.
- For legal reasons, when we have a good-faith belief that disclosure is reasonably necessary to comply with applicable law, legal process, or an enforceable government request; to enforce our Terms; to detect or address fraud, security, or technical issues; or to protect the rights, property, or safety of Lensmark, our users, or the public.
- In a business transfer. If Lensmark is involved in a merger, acquisition, or sale of assets, we will continue to protect your personal information and give you notice before it becomes subject to a different privacy policy.
6. Your choices and rights
- AI processing. When you create your account, Lensmark names the AI providers that receive your photos and asks you to acknowledge it. Because identification cannot run without them, this is a condition of using the Service, not a setting you can switch off. Deleting your account stops all future processing.
- Improving our results. Verified scene descriptions join our shared corpus as a standard part of the Service, disclosed on the same screen. Your original photos are never used this way.
- Place history. The places you identify are kept as your private history. Deleting your account erases it.
- Location. You control camera, photo, and location access through your device or browser permissions.
- Access a copy of your data. Email dag@lensmark.ai and we will send you a copy of your information: your account details, conversations, messages, identification history, feedback, place history, and your stored photos.
- Delete your account. You can delete your entire account from inside the app. This permanently removes your account details, private conversations, messages, identification history, feedback, place history, and uploaded media. Subject research that no longer identifies you (knowledge about the places and works themselves) may remain in Lensmark's shared reference corpus, and operational logs are retained with your identifier removed. If you have made a purchase, we keep the record of that sale — the email address on the account at the time, what was bought, the amount, and the payment provider's transaction reference — because tax and accounting law requires us to; it is kept only for those purposes and is never used to contact you.
- Communications. You can opt out of non-essential messages. We may still send essential service and security notices.
To delete your account, use the controls in the app. To exercise any other right, email dag@lensmark.ai. We verify your request by confirming you are signed in to your account.
- We keep your account, conversations, and identification history until you delete your account.
- Your uploaded photos, the small preview image, and the derived scene description remain part of your identification history until you delete your account. Deleting your account removes them from storage.
- The capture coordinates a photo carries are stored with its identification record, so we can show you where a photo was taken and return to it later. They are private to your account, they are never shown to anyone else, and deleting your account deletes them.
- Cached third-party place data is used only while it is current (within 30 days) and is refreshed from the provider the next time we look that place up, in line with our providers' terms.
- Operational and audit logs are retained for security and reliability.
- Records of purchases — the email address on the account when the purchase was made, the product, the amount, and the payment provider's transaction reference — are retained after account deletion to meet tax and accounting obligations.
- We keep some information for longer where necessary for legitimate business or legal purposes, such as security, fraud prevention, and dispute resolution.
We build security into the Service. We encrypt data in transit, restrict access to the people and processes that need it, enforce row-level access rules in our database, and review our storage and processing practices. No method of transmission or storage is perfectly secure, but we work hard to protect your information and to notify you if we detect a risk you should know about.
9. Children
Lensmark is not directed to children under 13, and we do not knowingly collect personal information from them. If you are under the age required to manage your own account in your country, you may use Lensmark only with the involvement of a parent or legal guardian. If you believe a child has provided us with personal information, contact us and we will delete it.
10. International data transfers
We operate the Service using providers whose servers may be located outside the country where you live. Data protection laws differ across countries. Wherever your information is processed, we apply the protections described in this policy and use appropriate safeguards for international transfers where required by law.
11. United States state privacy rights
Some U.S. state laws (such as the California Consumer Privacy Act) require specific disclosures.
- Categories of information we collect: identifiers (such as name and email); account and profile details; internet and network activity; precise geolocation; electronic and visual information (the photos you provide); and inferences drawn to provide the Service. Sources and purposes are described in Sections 1 and 2.
- We do not sell or "share" your personal information as those terms are defined under the CCPA, and we do not use it for cross-context behavioral advertising.
- Sensitive information. We treat precise geolocation and the contents of your photos as sensitive and use them only to provide and improve the Service you request, as permitted by law.
- Your rights. Subject to applicable law, you have the right to know, access, obtain a copy, correct, and delete your information, and to not be treated differently for exercising these rights. To delete your account, use the in-app controls; for any other request, email dag@lensmark.ai.
12. Europe, the UK, and Switzerland
If you are in the EEA, the UK, or Switzerland, we process your personal information on these legal bases: performance of a contract (to provide the Service, including the AI processing identification depends on and the shared corpus that makes it accurate); legitimate interests (such as securing the Service and preventing abuse); and legal obligation. You have the rights of access, rectification, erasure, restriction, portability, and objection, and the right to lodge a complaint with your local supervisory authority. Email dag@lensmark.ai to exercise these rights.
13. Changes to this policy
We may update this policy from time to time. We will post the updated version with a new effective date and, if the changes are significant, provide a more prominent notice. We will not reduce your rights under this policy without your consent.
DAGNOSTICS LLC
16264 NW 20th St, Pembroke Pines, Florida 33028
Email: dag@lensmark.ai