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Colibrí Privacy Policy

Last updated: October 1, 2026

This is a courtesy translation. If there are differences, the Spanish version prevails.

Colibrí is an app for learning languages. This policy explains, plainly, what data we touch and what we do with it.

What we collect

Your study progress. Completed lessons, exams, corrected mistakes, words in your deck, and streak days. It lives on your device. If you create an account, it is also copied to our server so you don’t lose it when you switch devices. If you sign out, it stays saved without being shown to anyone until you sign back in; if another account signs in on that device, or someone starts without an account, it is deleted from the device (it remains in your backup).

Your email address and your name, only if you decide to create an account. The address is used to identify you, to reset your password, to confirm with a code that the account is yours if you sign in with email and password, and to write to you about your account: the welcome email when you create it and, if you become a Plus member, the Plus welcome email. You enter your name when you sign up (or it comes from your Google account if you sign in with it), and it is used to greet you and, if you turn it on, as your alias in the weekly league. The app works fully without an account.

Your voice, while you talk with the tutor or practice your pronunciation. The audio is sent to Google’s artificial intelligence services—in Talk, directly from your device to the Gemini API; in pronunciation practice (the sound lab, Words, tongue twisters, and spoken lessons), through our server—to transcribe it, respond to you, and score it, and it is discarded when it finishes. We do not store recordings of you on any server, and we do not use them to train models. Google, as a provider, may retain requests for a limited time solely to detect abuse of its service, and does not use them to train or improve its models.

What you write and look up inside the app. The texts of writing activities, the words you look up in the dictionary, the items you missed on an exam, the answers you ask to have explained with “Why?” (the exercise and what you answered), and the questions you write to “Ask your tutor” (with the latest messages of that conversation, so the answer has context) are sent to our server and to Google’s models in order to correct you, explain your mistake, answer you, and prepare your next exam. When a Talk ends, the phrases you said in it (the transcript, without audio) travel the same way for “How a native would say it.” Everything is processed and discarded along with the request: none of it is stored in association with you. The “Ask your tutor” conversation lives in the app’s memory while it is open and is not saved on your device either.

What the tutor remembers about you. During Talks, the tutor may note details you tell it (what you do for a living, where you live, what you like) to pick them up again in later lessons, and you can write or delete them in Profile → “What your tutor remembers.” They are stored on your device. They travel to our server only inside the instructions for each Talk you open, and are not stored there. The same goes for how you want your tutor to be (its personality, pace, how much it corrects you, and its voice, in Profile → “Your tutor, your way”).

Your Talks. The transcript of each lesson with the tutor, with its corrections and phrases, is saved on your device so you can reread and review it. It is not saved on any server. You can delete each lesson from your history.

How you use the app (usage statistics). To know what works and what doesn’t, the app sends usage events to our server: opening the app, which screens you visit, finishing a lesson or an exam, how long a Talk took to connect and how long it lasted, whether it dropped, running out of nectar, viewing the Plus screen and which plan you chose, using a Plus benefit (which one, never what you wrote in it), sharing a card, turning on reminders, or an error. Each event is sent with an anonymous installation identifier, which the app generates and which is lost when you uninstall the app (it is not the advertising identifier or any other device identifier), and with technical data that thousands of devices share: the app version, the device model, the Android version and the system language, the language and level you are studying, whether you have Plus, and whether you have an account (yes or no; never your email, your name, or your account identifier). They do not contain your voice or your texts. They are kept for 30 days in the server logs and for up to 13 months in our analytics database.

Your subscription. If you buy Colibrí Plus, Google Play processes the payment: we do not see your card or your payment details. Your device stores whether you have Plus, which plan you chose, the date you became a member and, if you started with a free trial, when it ends (to remind you two days before). When you open the app, Google Play is asked whether the subscription is still active. If you have an account, when you subscribe the app tells our server that you did, which plan you chose and, if you started with a free trial, when it ends, solely to send you the Plus welcome email; the server stores the date it sent it and nothing else. Your nectar (how many drops you have left and what you earned today) is also stored on your device: it never leaves it.

Gift codes. If you redeem a Plus gift code, our server stores, together with your account identifier, which code you redeemed, when, and until when it gives you Plus. To stop anyone who tries to guess codes, it also counts your failed attempts in the last hour. When you redeem it, we send you the Plus welcome email, which says until when it gives you Plus. If you have an account, when you open the app our server is asked whether you have Plus as a gift: for that, the token of your session, which says who you are, is sent, but your email is not stored.

Crash reports. If the app crashes, a technical report is sent to Firebase Crashlytics: where in the code it failed, the app version, the device model and its Android version, the last screen you opened, and the same anonymous installation identifier. Firebase keeps these reports for 90 days.

You decide. You can turn off usage statistics and crash reports whenever you want in Profile → “Usage and error stats.” When they are off, the app sends neither and deletes anything it had pending to send.

What you write to us. Reports (about a lesson, an exam, a lesson with the tutor, or a story) and the messages you send from “Contact us” are stored on our server with the installation identifier, whatever you had on screen when you reported (for example, the exercise and what you answered) and, if you provide it, your email, so that we can review them, correct the content, and reply to you. They also reach us by email at our support address.

Reminders. If you turn them on, the study notifications (the daily one at the time you choose, the one for a streak at risk, and the one for three days without opening the app) are scheduled on your own device. We do not use push notifications: no server knows when you open the app or whether you received the notification.

Advertising identifiers, if you use the free version. They are handled by the Google AdMob SDK to show ads. In Europe you will be asked for consent before the first one loads, and you can say no.

What leaves your device even if you have no account

Without an account, your progress stays on the device. But the app does not work on its own: to converse, generate lessons, score your pronunciation, and correct your writing, it has to talk to our server and to Google’s models. So, even without an account, the following leave your device: your voice and the texts of your activities, your dictionary lookups, your questions to the tutor, the phrases from your Talks for “How a native would say it,” the usage statistics and crash reports described above (with the anonymous installation identifier, unless you turn them off) and—if you see ads—your device’s advertising identifier. Everything travels encrypted, and neither your voice nor your texts are stored.

The weekly league: what others see

If you take part in the league, other people who use the app see your alias and your points for the week. The alias is “Colibrí” followed by four digits that stay the same; your real name is shown only if you expressly turn that on in the corresponding setting. The leaderboard is stored in Firebase and can be read by any user who has signed in, along with the account’s internal identifier. Deleting your account also deletes your rows in the league.

What we do NOT do

  • We do not sell your data to anyone.
  • We do not store your voice recordings.
  • We do not publish your study progress: the only things visible to other people are your alias and your points in the weekly league (see above).
  • We do not track your location, your contacts, or your other apps.

Who we work with

  • Gemini API (Google): generates your lessons, corrects what you write, scores your pronunciation, and gives the tutor its voice in Talk, in real time.
  • Google Cloud (Cloud Run, Text-to-Speech, and Vertex AI): Cloud Run handles the app’s requests, Text-to-Speech reads lessons and stories aloud, and Vertex AI takes over the Gemini API’s work when it fails.
  • Google Cloud Storage: stores the generated lessons so that all learners share the same version. That content belongs to the course, not to you: it carries no personal data.
  • Firebase (Authentication, Firestore): stores your account, your progress, and the league leaderboard, and sends the email to reset your password.
  • Resend: sends your account emails (the code to confirm it, the welcome email, and the Plus welcome email) and delivers to our support address the reports you send from the app.
  • Firebase Crashlytics: receives crash reports.
  • Google BigQuery (Google Cloud): stores the usage statistics for analysis.
  • Google AdMob: shows the ads in the free version.
  • Firebase Hosting: serves the website, speakcolibri.com.

The website

The speakcolibri.com site does not use cookies, analytics, or ads, and does not load anything from other sites. Like any web server, Firebase Hosting logs technical data about each visit (the IP address, the browser, and the page requested) in order to serve the site and protect it from abuse.

Your rights: deleting your account and your data

You can delete your account and its data FROM WITHIN THE APP: go to Profile, the “Your account” section, and tap “Delete my account.” Your account, your cloud backup, your rows in the weekly league, what we store about your gift codes, and everything of yours on the device you delete it from are permanently deleted: your progress and settings. On any other device where you have used it, whatever remains is deleted by uninstalling the app or clearing its data.

If you no longer have the app installed, follow the steps at speakcolibri.com/borrar-cuenta. All you need to do is write to us from your account’s email address asking for deletion, and we will do it within 30 days at most. Usage statistics do not carry your account or your email, so there is nothing of yours to delete in them: they expire on their own.

If you use the app without an account, uninstalling it deletes the progress stored on the device; whatever was sent to be processed (voice and texts) had already been discarded at the time.

Authorization and processing (Colombia)

By creating an account you authorize the processing of your personal data for the purposes described here, in accordance with Law 1581 of 2012 and its implementing decrees. You may at any time exercise your rights to know, update, rectify, and delete your data, and to revoke this authorization, through the previous section or by writing to the contact address.

Minors

Colibrí is for people 18 years of age or older. It is not directed at minors (the tutor runs on the Gemini API, whose terms do not allow it to be offered to minors) and we do not knowingly collect data from minors. If you believe a minor has given us data, write to us and we will delete it.

Contact

Write to us from the app (Profile → “Contact us”) or at soporte@speakcolibri.com.