Privacy
Solvelingua is a game for learning a language by talking. This page says what it keeps about you, why, who else handles it, and how to have it deleted. Last updated 24 October 2026.
Solvelingua is run by ExSeven, LLC in the United States, which is responsible for this information. Questions: privacy@solvelingua.com.
What we keep
- Your game. Each character is saved on our servers under a save code: the character you made, progress, money, belongings, the people you've met, and what you've said to them, so they can remember you.
- Your account, if you make one. Your email address, and if you sign in with Google, your Google account's id and email. We don't get your Google password, contacts or anything else from your Google account. An account lists your save codes so you can play them on any device.
- Purchases, if you buy Plus or voice minutes. Stripe's id for you, whether you have Plus and until when, and how many voice minutes you've used and have left. Your card details go to Stripe, never to us.
- Your voice, while you talk. When you talk out loud, your voice is sent to the services below to be turned into text and answered. We keep the words, not the recordings.
- How the game is used. Events such as a talk starting or ending, how long it ran and what it cost, which city and level you're playing, and when you were last playing. These name you only by a scrambled form of your save code, not by the code, your name or your email.
- Errors. When something breaks in the game, in your browser or on our servers, we record the error message, where it happened, the game's version and your browser's description of itself, so we can fix it.
- What you send us, such as a language mistake you flag in the game, or an email.
- Ordinary server records. Like any website, our hosting sees your IP address and browser with each request, and keeps short-lived logs to keep the game running and safe.
What we do with it
We use it to run the game for you, to take payments, to keep the game safe from misuse, and to fix and improve it. We don't sell it, share it for advertising, or use it to profile you. We don't use your conversations to train AI models.
If you're in the EU or UK: we use your information because it's needed to provide the game you asked for (your saves, account and purchases), because we have a legitimate interest in keeping it working and safe (usage, errors and logs), and because the law requires it (payment records).
Who else handles it
- Cloudflare hosts the game and this website and stores saves and accounts. Its AI models turn your voice into text and help with translation. Cloudflare also sends our sign-in emails.
- Anthropic (Claude) writes the characters' replies, the notes on your language and the phone's translations.
- ElevenLabs gives the characters their voices, and handles the audio of voice calls in the game.
- Stripe takes payments, keeps receipts and runs the page where you manage Plus.
- Google signs you in, if you choose to sign in with Google.
What you type or say in a conversation goes to these services so the game can answer you. Each handles it under its own terms, as a provider working for us. They may be in the United States or other countries, so your information may be handled outside the country you live in.
Cookies and storage
The game sets one cookie: a sign-in cookie, so you stay signed in for up to 60 days. It's needed for signing in to work, so we don't ask for permission. The game also keeps your save codes, settings such as volume, and the translator's recent history in your browser's storage, so it can open your character next time. This website sets no cookies.
When you pay, Stripe's checkout page sets its own cookies to prevent fraud; see Stripe's privacy policy. We use no advertising or tracking cookies, and no outside analytics.
How long we keep it
Saves and accounts are kept until you ask us to delete them, or until we close the game. Payment records are kept as long as tax and accounting law requires, usually several years. Usage events and errors are kept for as long as they help us run and improve the game, and server logs for a short time.
Your choices
You can play without an account. You can sign out at any time from the game's menu, and delete a character there. To have your account or your saves deleted, to get a copy of what we hold about you, or to correct it, email privacy@solvelingua.com from your account's email address, or tell us your save code, and we'll do it within 30 days. Deleting an account doesn't cancel Plus by itself: cancel it first from "Manage Plus".
Depending on where you live (for example the EU, the UK or California), you may have more rights, such as to object to how we use your information, or to complain to your data protection authority. We'll honor them. We don't sell or share personal information as California law defines it.
Keeping it safe
Save codes and sign-in links are long and random, sign-in links work once, and what we store is encrypted by our hosting. No system is perfectly safe, so keep your save codes to yourself.
Children
Solvelingua isn't meant for children under 13, and we don't knowingly keep their information. If you think a child under 13 is playing, email us and we'll delete it.
Changes
If this changes, we'll update this page and the date at the top, and tell players about big changes.