Privacy policy
Last updated: October 23, 2026
This policy covers both the Caszul app and caszul.com (together, "Caszul").
1. Overview
Converting Salvadoran land measurements and browsing property listings is free for everyone, on both the Caszul app and caszul.com. Listing a property is available to vetted real estate professionals and property owners through an application process. This policy explains what we collect, why we collect it, and what you can do about it.
2. No account required
You don't need an account to convert measurements or browse listings, on the app or the website. A free visitor account is optional. Agents and property owners who list with Caszul have their own account (see Agent and owner accounts below).
3. What's stored on your device
The app and website save a few preferences on your own device: your favorited listings, your language, and, in the app, your theme and whether you've seen the welcome tour. These stay on your device. Your device also keeps a random identifier used for usage data (see Usage data), a notification token if you turn on new-listing notifications in the app (see Notifications), and, if you're signed in, a sign-in token so you stay signed in.
4. Optional visitor accounts
If you create a visitor account (with Google, Apple, or a code sent to your email), we store your email address, the name and phone number you choose to add, your language, your favorited listings, your saved searches and alert settings, the agents you've contacted through Caszul, and, in the app, a notification token so we can send you alerts. We use this only to keep your favorites on all your devices, send the alerts you ask for, and fill in your messages to agents faster. We don't share it with agents unless you contact them, and we never sell it. Every alert email has a link to turn alerts off. You can delete your account at any time from My account, on the website or in the app, and that deletes this data right away. If you signed in with Apple, deleting your account also removes Caszul's access to your Apple ID.
5. Fingerprint or Face ID sign-in
If you turn on sign-in with fingerprint or Face ID, your fingerprint or face data stays on your device and never reaches Caszul; we only store a public key that lets us recognize that device, and you can remove it at any time in your account.
6. Usage data
To understand how Caszul is used and to fix problems, we use PostHog (app and website) and Google Analytics (website). They record things like the pages and screens you view, the listings you open, the features you use (such as the calculator), your device type, operating system, browser, and app version, and error and crash reports. This is tied to a random identifier, not to your name or email. Like any internet service, these tools receive your IP address, which can be used to estimate your general location, such as your country or city. Signed-in visitors stay anonymous in usage data. When an agent signs in, their activity is linked to an anonymous code generated from their account, never to their email, so we can measure their own listing performance. We don't use this data for advertising or to track you across other companies' apps or websites. On the website we also record anonymous replays of how public pages are used, such as scrolling and clicks, with anything typed and contact details hidden; we never record the agent portal or pages where you upload documents.
7. Notifications
If you turn on new-listing notifications in the app, we store a notification token (provided by Apple or Google through Expo, our app platform), the areas, property types, and price ranges you choose, and your language, so we can alert you about matching listings. You can change or turn off notifications at any time in the app's Settings.
8. Liking a listing
Tapping the heart on a listing sends only that listing's ID and whether you liked or unliked it, no personal information, to record a like count. This works the same way on the app and the website.
9. Agent and owner accounts
Agents and property owners who list with Caszul sign in with Apple, Google, or a sign-in link or code sent to their email. We store the account's email, name, phone number, profile details (such as photo, bio, and social links), and listings, plus the account identifier and email that Apple or Google share with us when you sign in with them. We use this to run your account, publish your listings, and contact you about your account, your listings, and occasional Caszul updates. If you're an agent, we may show your public profile (name, photo and business name) and your listings in Caszul promotions, such as social media, ads and app store pages.
10. Support requests
When you contact support in the app or on the website, we store what you send: the category, your message, any photos you attach, your contact details, and the conversation that follows, so we can resolve your request.
11. Property listings
Realtors, agents, and individual property owners who apply to list a property have their information, including name, contact details, property specifics, photos, and video, displayed publicly on the app and website once approved. A "Verified" badge appears on a profile once that person has completed identity verification (see below); it never exposes the ID itself. Applications are made on caszul.com, and listings are managed in the agent portal on the website or under My Listings in the app. Listing descriptions, titles, notes, and agent bios may be translated automatically so they appear in both English and Spanish.
12. Property location
We don't publish a property's exact coordinates. Listing pages show only a general area, not a precise pin. This protects the owner and the listing agent from being identified or contacted directly by someone bypassing the agent, and protects buyers by keeping the transaction inside a verified process rather than an unverified one built on a scraped address. The agent or owner may share the exact location at their discretion, for example in the listing description or directly with a buyer.
13. Identity verification
To confirm applicants are who they say they are, we ask for a government ID number (DUI, or Id Migratorio for a legal resident who doesn't have a DUI yet) and photos of its front and back. Both are optional; agents who provide them can earn the Identity verified badge. For a residency card, we also read the migratory status printed on it, to check whether that status authorizes paid work in El Salvador. This is used only to verify identity and eligibility before approving an account and is never shown publicly; only whether verification was completed appears as a badge on a public profile. ID numbers, photos, and migratory status are stored privately on Google's servers and are never shared outside Caszul, except as required by law (see Legal requests and safety below). Agents are asked to verify their identity, and those who do carry the Identity verified badge; individual property owners are not always verified, so the badge may not appear on every owner's profile. ID photos are permanently deleted 30 days after we check them. We keep the ID number and the verification result for as long as the account exists, and longer where the law requires it, including to respond to valid requests from law enforcement.
14. Contacting agents
When you contact an agent through WhatsApp, email, or phone, Caszul does not see, store, or have access to the content of those messages. That communication is governed by WhatsApp's, your email provider's, or your phone carrier's own privacy practices.
15. Third-party services
We use these services to run Caszul, and each handles data under its own privacy policy. Google (Sheets, Drive, Apps Script, and Gmail) stores listings, applications, verification data, and support requests, and sends our emails. IONOS delivers email for caszul.com addresses. Cloudflare hosts the website and stores and delivers listing video (Cloudflare Stream), and like any web host it processes technical logs such as IP address and browser type. PostHog and Google Analytics provide usage data. DeepL and Google Translate translate listing text. Expo delivers app updates and notifications. Apple and Google provide sign-in. Maps come from OpenStreetMap on the website, Apple Maps in the iPhone app and Google Maps in the Android app. If a listing includes a YouTube video, playing it loads YouTube, which is subject to Google's privacy policy.
16. Data retention
We keep an agent's or owner's account information for as long as the account is in use. If an agent or owner doesn't sign in for a full year, we delete the account, after emailing a reminder 90 days, 30 days, and 3 days before, and again on the day it's deleted. Signing in at any time keeps your account active. When an account is deleted, we remove the profile and listings as described in Deleting your account below. Photos and video submitted for a listing may be kept after that listing is removed; you can ask us to delete them at any time. We keep support requests so we can refer back to past issues. Usage data is tied only to a random identifier or an anonymous code. Visitor account data is kept until you delete the account, or deleted automatically after two years without a visit.
17. Deleting your account
A visitor account is deleted right away when you choose Delete my account in My account, on the website or in the app. If you're an agent or owner, you can delete your account in the app under Settings, or by emailing us (see Contact below). You're signed out right away, and we remove your profile and listings within 3 business days and email you when it's done. We handle this step by hand because a listing may be under contract or have an interested buyer. We keep your ID number and verification result, and any records the law requires, as described in Identity verification above.
18. Your rights
You can ask us to access, correct, or delete your information at any time by contacting us (see Contact below), or delete your account as described above.
19. Legal requests and safety
We may access, preserve, or share your information, including with law enforcement or other authorities, if required by law or if we believe in good faith it's necessary to comply with a legal request, investigate or prevent illegal activity (including illegal content), or protect the safety of any person.
20. We don't sell your data
Caszul does not sell your data to anyone and does not use your data to track you across other companies' apps or websites.
21. Children's privacy
Caszul is not directed toward minors and does not knowingly collect information from anyone under 13.
22. Governing law
Caszul aims to comply with applicable data protection laws in El Salvador, the United States, and other jurisdictions where our users are located.
23. Changes to this policy
This policy may be updated as features evolve. Material changes will be reflected with an updated date above.
24. Contact
Questions about this policy can be sent to ….