Privacy notice

Who we are

The controller of your data is MB „Įdarbintas intelektas“, Lithuania, the developer of Langer AI. You can reach us at hello@langer.chat.

Your account

To create an account, you give us your email address, a password and the name others will see, and you choose your language. We keep the password only as a secure hash. Langer gives you a username and an account ID, and an invite link once you first share it.

You can add a photo, a phone number and the voice your translations are read in, and choose how fast it speaks.

If you sign in with Google or Apple, we receive your name and email address — and from Google, your profile picture — and keep the link to that account. Google and Apple handle your data on their side under their own privacy policies.

Messages, calls and translation

We store the messages you send and their translations, with the time, the languages and whether they have been delivered and read.

In a group chat, we also store the group’s name, who is in it, who its admin is and when each person joined. A message you write to a group is translated by Anthropic’s Claude, in the same way, into each language spoken in the group other than yours, and we store each of those translations with the message. Each reader gets it in their own language, with your original text available. We note when you last read a group, only to count your unread messages. Nobody else sees that, and a group shows no delivery or read marks.

To translate a text, we send it to Anthropic, whose Claude translates it. When you speak in the translator, the app streams your voice to our server, which passes it to Google Cloud to turn it into text (for the few languages Google Cloud doesn’t recognise, to Google’s Gemini API instead); the text is then translated the same way, and Google’s Gemini API reads the translation aloud in the voice you chose for calls.

In a call between two languages, the app streams your voice through our server to Google’s Gemini API, which turns what you say into text. Our server sends that text, with the last few phrases of the call for context, to Anthropic, whose Claude translates it into the other person’s language, and Google’s Gemini API then reads the translation aloud to them in the voice and at the pace you chose (in Ukrainian and Urdu, which Gemini doesn’t speak, Google Cloud’s voice of the same name does). Our server also passes your voice itself on to the other person, who hears it quietly under the translation unless they switched that off. When you both speak the same language, our server passes your voice on to the other person without translating it.

We record calls only if you agree to help us improve them — the app asks you once, and you can change your answer at any time in its settings — and only those in which the other person agreed too; both phones show when a call is recorded. Such a recording holds each person’s voice, the translation the other heard, and when each was said and heard; only the Langer team listens to it, to find and fix problems. For each call, we keep who called whom, when, for how long and in which languages, and, in a call between two languages, the text of what each of you said, with its translation.

You can also dictate a message: the app streams your voice to our server, which has it turned into text the same way as in the translator, and unless you remove it, the recording of what you said goes with the message. We keep that recording as long as the message, and only you and the person you wrote to can play it. Either of you can have such a voice message read aloud: Google’s Gemini API reads its translation (or its text, if it wasn’t translated) in the voice and at the pace you chose, as in calls (in Ukrainian and Urdu, Google Cloud’s voice of the same name does). In a group, the members who can see the message can play the recording and have the message read aloud in their own language.

Where you choose your voice in the settings, you can hear it say a phrase you type or dictate, in a language you pick: our server translates the phrase as it does messages, and Google’s Gemini API speaks it in the voice and at the pace you chose (in Ukrainian and Urdu, Google Cloud’s voice of the same name does). We keep the phrase, its translation and the speech made of it for up to 10 minutes, so that you can hear it again at another pace without the speech being made or paid for again. They stay only in our server’s memory, never on disk.

For each use of these services — a translated message or call, the translator, dictation, a voice message read aloud, a phrase you try your voice on, a voice sample — we note how much of them it used (tokens, characters or seconds of audio) and what that costs, with the day, your account and the call, to keep track of what Langer spends on them. What a use costs also counts towards your plan’s weekly limit, and past it can be paid with your credits (see Plans and payments); voice samples don’t count. These counts hold nothing of what was said or written.

Plans and payments

Langer has a free plan and paid plans, and credits that keep you going once you reach your plan’s limit. We keep your plan and where it comes from (the App Store, Google Play, the web app or a gift from us), with its status and renewal dates; each payment: where and for what it was made, its price and currency when the store tells us, its dates and any refund; your credits, with each purchase, use, refund or other change of them; and how much of your weekly limit you have used. For each use of the AI services, we also keep for 8 days what it cost, what it was for (in a call, whose words it translated) and how it was paid for.

Plans and credits bought in the iPhone or Android app are sold by Apple or Google themselves, under their own terms and privacy policies: you pay them through your Apple or Google account, and they handle the payment and any refund. When you buy, the app gives them a random ID that stands for your Langer account, so that the purchase reaches it; the ID tells them nothing else about you. They tell us the purchase’s IDs, what was bought, its dates, its price and currency, the country of the store, whether it renews and whether it was refunded. We never receive your card details, nor learn which Apple or Google account paid.

In the web app, you pay through Stripe, on Stripe’s own payment page: you give your card and billing details to Stripe, and we never see your card number. We give Stripe your email address, your language, an ID for your account and what you are buying. Stripe tells us the IDs of your customer record, subscription and payments, the amounts, and the billing details you gave it, such as your country, which decides the VAT. When you buy in the web app, we email you a confirmation.

What other people see

Anyone signed in to Langer can find you by your username, or by your exact email address or phone number, and see your name, username, photo and language. If you would rather not be found, write to us. If you share your invite link, whoever opens it sees your name, photo and language, even without an account, and by accepting it adds you to their contacts and themselves to yours. When someone adds you as a contact, Langer shows them to you, so that you can add them back.

The people you talk to see your messages and what you say in calls, translated into their language, and whether you have read their messages. They can play the recordings of your voice messages and have them read aloud in the voice and at the pace you chose. People who have added you as a contact see when you are online. In a call, the other person also sees when the call is no longer being translated, though not why.

People in a group with you see your name, photo and language, whether or not you can be found by search, and what you write there from when they joined, translated into their language, with your voice messages. Someone who has you in their contacts can add you to a group, unless you choose in Settings that only your contacts can, and you can leave at any time. A group doesn’t show who is online or whether you have read anything.

Blocking and reporting

You can block anyone you talk to. Someone you blocked can no longer message or call you, and isn’t told: what they send you never reaches you, not even after you unblock them, and their calls don’t ring. We keep whom you blocked until you unblock them or either of you deletes the account.

In a group, what someone you blocked writes doesn’t reach you from then on, not even after you unblock them, and they aren’t told; they still see what you write there. Someone you blocked can’t add you to a group, and is told only that privacy settings don’t allow it, in the same words as when your choice of who can add you stands in the way; nor can you add them.

You can report someone, or a message you received from them, picking a reason and adding details if you like. We keep the report — who made it, whom it is about, the reported message as it was (its text, without a voice message’s recording), the reason and your details — for one year, and the Langer team reads it to act on it. The person you reported isn’t told who reported them. If they delete their account, the reports about them stay until their year is up; if you delete yours, the reports you made go with it. A report of a message in a group also keeps the group’s name.

The sign-up form on this website

In the form you give us your email address and, if you choose to, your name, your role (beta tester, investor or partner), your company, the languages and platforms you need, and a message. We also note the language of the page you signed up on and, if you came through a link with a campaign tag, the name of that campaign.

We use these details only to invite you to the beta, to send you information about Langer you asked for (for example, the investor deck) and to understand which languages and platforms people need.

Technical data

Like any online service, our servers process your IP address and details of your browser or device to deliver the service and protect it from abuse. They are stored with your sign-in sessions and, while you are connected, with your connection, and they appear in our servers’ technical logs.

So that your phone rings when someone calls you, also with the app closed, the mobile app gives our server your phone’s push token — Apple’s on an iPhone, Google’s on an Android phone — with the app’s version. When someone calls you, our server sends your phone, through Apple’s or Google’s push service, the call’s ID, the caller’s name as you saved it and the languages of the call. When someone writes to you, it sends your phone a notification the same way: the sender’s name as you saved it and the message’s text, translated into your language. When someone writes in a group you are in, the notification is the group’s name, the sender’s name as you saved it, else their name in Langer, and the message’s text, translated into your language. When someone adds you to their contacts, adds you back or accepts your invite, it sends one too: their name as you saved it, else their name in Langer, and what they did.

Why, and on what legal basis

We process your account, messages, groups, calls and translations, and your plan, purchases and credits, to provide Langer to you under our terms of service (Article 6(1)(b) GDPR).

We process technical data and logs to keep Langer secure and working, and may use data to establish or defend legal claims, based on our legitimate interests (Article 6(1)(f) GDPR). Where the law requires us to keep or disclose data, we do so to comply with it (Article 6(1)(c) GDPR); accounting law, for example, requires us to keep payment records.

We count how much of the AI services each account uses to apply your plan’s limit and spend your credits, as our terms of service provide (Article 6(1)(b) GDPR), and to keep track of what Langer costs, based on our legitimate interests (Article 6(1)(f) GDPR).

We use the details from the sign-up form, and record calls to improve them, based on your consent (Article 6(1)(a) GDPR) — for a call, that of both of you.

We keep whom you blocked to provide Langer to you under our terms of service (Article 6(1)(b) GDPR), and keep and read reports to keep Langer safe for the people who use it, based on our legitimate interests (Article 6(1)(f) GDPR).

Translation is automatic, but we make no decisions about you by automated means.

Who processes data for us

Besides the Langer team and the people you talk to, only these providers process your data — on our behalf, under data processing agreements:

Amazon Web Services — our servers and the emails we send, in Ireland;

MongoDB Atlas — our database, in Frankfurt, Germany;

Anthropic (Claude) — translation of text and of what is said in calls between two languages, in the United States;

Google Cloud — speech recognition in the translator and in dictation, and speech synthesis in Ukrainian and Urdu, which can take place outside the European Economic Area;

Google (Gemini API) — speech recognition and speech synthesis in calls between two languages, in the translator, in dictation, in reading voice messages aloud and in trying your voice, which can take place outside the European Economic Area;

Stripe (Stripe Payments Europe, Ltd.) — payments in the web app, in Ireland, which can also take place in the United States; Stripe also processes this data as a controller in its own right, to prevent fraud and meet its legal duties;

Apple (Apple Push Notification service) and Google (Firebase Cloud Messaging) — delivering calls, new messages and contact notifications to your iPhone or Android phone, which can take place outside the European Economic Area.

Where data leaves the European Economic Area, it is protected by the European Commission’s standard contractual clauses or by an adequacy decision, such as the EU–US Data Privacy Framework. We never sell your data and never use it for advertising.

How long we keep it

Your account, profile and contacts: until you delete your account.

Messages, with the recordings of voice messages: until they are deleted — you can delete your own messages, and either of you can delete a whole conversation — or until either of you deletes the account. Deleting a message erases its text and any recording at once. A recording that is never sent with a message is deleted within two hours.

Groups and their messages: a group stays until its last member leaves, and then goes with all its messages. A message in a group, with its translations and recording, stays until its sender deletes it or their account, or until the group goes. Deleting it erases its text, translations and recording at once; until the sender’s account or the group goes, a marker without text stays: who sent it, when, in which language, and an ID their app gave it, so that it can’t come back. If you leave a group or are removed, you lose access to it at once, and what you wrote stays with the group under your name and photo until you delete your account or the group goes. Your membership, with when you joined and last read, goes at once too. If you left by yourself, we keep the fact that you left, so that only someone who has you in their contacts and is in yours can add you back, until you are added again, the group goes or you delete your account. A group’s name stays with the group.

Calls: the record of a call is deleted 30 days after it ends; what was said, with its translation, after 90 days.

Speech we generate for you: one day.

Recordings of calls, if you agreed to them: 14 days, or until either of you withdraws your consent or deletes your account.

Sign-in sessions, with their IP address and browser or device: until you sign out, or until they expire 30 days after they were last used. Password reset links stop working after an hour and are then deleted. Codes for signing in on another device through the browser stop working after 10 minutes and are then deleted.

Your phone’s push token: until you sign out on that phone or delete your account, or 60 days after you last opened the app there.

Server logs: up to three months.

Counts of the AI services used: as long as we need them to keep track of our costs; once you delete your account, they no longer show it was you.

Your plan and how much of your weekly limit you have used: until you delete your account. What each use cost and how it was paid for: 8 days.

The history of your credits and the records of your subscriptions: as long as your account exists; after you delete it, we keep them without the link to your account, so that a refund or a restored purchase can still be handled and our accounts stay complete.

Payment records: 10 years, as accounting law requires; after you delete your account, without the link to it.

Sign-up form details: until the beta programme ends or you withdraw your consent, whichever comes first.

Blocks: until you unblock the person or either of you deletes the account.

Reports: one year. The reports you made go when you delete your account; the reports about you stay until their year is up.

When you delete your account, we delete your profile, photos, contacts, conversations and calls at once — for the people you talked to as well — together with any sign-up on this website made with the same email address. Your plan, your credit balance and the use of your limit go with it, as do the blocks between you and others, whoever made them, and the reports you made. You leave every group you are in, and the messages you wrote there go with your account; a group’s name you chose stays with the group unless you were its last member.

Cookies and storage

This website sets no cookies and uses no analytics or tracking tools.

The web app uses only the cookies it needs to keep you signed in and to complete a sign-in with Google safely, and remembers your interface language in your browser.

If you pay in the web app, you do so on Stripe’s payment page, which uses Stripe’s own cookies under Stripe’s privacy policy.

The mobile app keeps your sign-in in the device’s secure storage, and a copy of your profile and your settings on the device; signing out removes the sign-in and the profile copy.

Neither app uses analytics, advertising or tracking tools.

Children

Langer is not meant for children under 16. If you believe a child under 16 has an account, write to us and we will delete it.

Your rights

You can change your profile and your answer about recording calls, and delete your account, yourself in the app’s settings.

You can also ask us for a copy of your data, also in a machine-readable format, ask us to correct or delete it, restrict or object to its processing, and withdraw your consent at any time — just write to hello@langer.chat. Withdrawing consent does not affect processing that happened before.

You also have the right to lodge a complaint with the State Data Protection Inspectorate of Lithuania (vdai.lrv.lt) or with the data protection authority in your country.

Changes to this notice

When we change this notice, we update the date at the top. We will tell you about important changes in advance, by email or in the app.