Your watches are yours.

Last updated December 1, 2026

Caliber is an iPhone app for watch collectors. This page says what Caliber collects, why, who helps run it, and how to delete everything. In short: we collect what the app needs to work, we never sell it, and there are no ads or tracking.

Who we are

Caliber is made by Anam Bhatia, United States. For anything about your data, write to anambhatia22@gmail.com.

What Caliber collects

• Your account: your email address. If you sign in with Apple or Google, we receive the email they share with us (with Apple, this can be a private relay address).
• Your collection: the watches you add, their order, and what you write about them: when each became yours, why it matters, your moments with it.
• Photos: the photos you take to identify watches, and the photo you keep with a watch’s story.
• Discover choices: the picks you save or set aside.
• Usage records for AI: for each AI request, the task, model, tokens used and cost, linked to your account, so we can keep costs within fair limits.

We don’t collect your location, contacts or browsing, and we don’t use advertising or analytics trackers.

The beta list

If you join the beta on this website, we keep your email address to send you the link to install Caliber and occasional news about the app. It’s stored with Supabase, used for nothing else, and never shared. To be taken off the list, write to anambhatia22@gmail.com.

How Caliber uses AI

Caliber uses Claude, an AI model made by Anthropic, for three things:

• Identifying watches: your photos are sent to Claude, which describes each watch. Caliber then matches the description against its own catalog. Claude only chooses among catalog entries; it never writes the facts you see.
• The line at the top of your collection: Claude writes a sentence from the catalog facts about the watches you own.
• Discover: Claude writes the short reason beside a pick. This uses catalog facts only, never your name, photos or stories, and the same sentence is shared by everyone who gets that pick.

Before your first photos are sent, the app asks you. You can always add a watch by name instead. Under Anthropic’s commercial terms, what Caliber sends is not used to train their models. Anthropic may keep requests for a limited time for safety and abuse monitoring, as described in Anthropic’s privacy policy.

What you write in Your story is never sent to AI.

Where it is kept

Your account, collection and photos are stored with Supabase, our database and storage provider, in the United States (North Virginia). Photos are in a private store that only your account can read. Data is encrypted in transit and at rest.

Who we share it with

Only the services that run Caliber: Supabase (storage and sign-in), Anthropic (AI, as above), and Apple or Google when you choose to sign in with them. We don’t sell or rent your information, and we don’t share it for advertising.

How long we keep it

As long as you have an account. Remove a watch or a photo and it’s deleted. Delete your account and everything goes with it: your collection, your stories and every photo. Usage records for AI are kept without your account attached, so cost totals stay correct.

Deleting your account

In the app, open the account button, then Account, then Delete account at the bottom. It takes effect at once and can’t be undone. You can also ask us at anambhatia22@gmail.com.

Your rights

You can ask for a copy of your data, ask us to correct it, or ask us to delete it, at anambhatia22@gmail.com. Depending on where you live, you may have further rights under laws such as the GDPR or the CCPA, and the right to complain to your data protection authority.

Children

Caliber isn’t meant for children under 13, and we don’t knowingly collect their information.

Changes

If this policy changes in a way that matters, we’ll say so in the app before it takes effect. The date at the top shows the latest version.