Privacy Policy
Euphemo · Last updated: October 21, 2026
Draft prepared for legal review. Items marked [verify] must be confirmed before publishing.
The short version
- The free plan works entirely on your device. You don't need an account, and we receive nothing.
- Your voice recordings stay on your device, and phones delete them after 7 days. We never upload them.
- We don't sell your information, we don't show ads, and we don't use your information to target ads.
- When you use the AI coach, your words are sent to our servers and to our AI provider to create a reply. We don't store them.
- You can download or delete everything we hold about you from inside the app.
Who we are
Euphemo is made by Argusis Technology Inc. ("we", "us"), a company in Ontario, Canada. Address: [companyAddress to be added].
Questions about privacy: [supportEmail to be added].
What stays on your device
The app keeps the following on your phone, tablet or browser, and they don't reach us:
- your lessons, progress, saved words, lists and notes;
- your recordings (on phones they are deleted automatically after 7 days; in a browser they disappear when you close the page).
This is everything the free plan uses. If you delete the app, or choose Profile > Privacy and data > Erase data on this device, it is removed.
Information we collect when you have an account
You need an account only to start a trial, buy the full plan or an add-on, or redeem a code. With the trial or full plan, an account also lets you use the AI coach and sync between devices. On the free plan, even with an account, your learning data stays on your device.
| What | Why | How long we keep it |
|---|---|---|
| Your email address, and your Apple or Google sign-in ID if you use one | To create your account and let you sign in | Until you delete your account |
| An account ID we create | To link your plan, sync and allowances to you | Until you delete your account |
| Your plan and purchase status: plan, trial, renewal and end date, and where you bought it | To give you the plan you paid for | Until you delete your account, unless the law requires longer (for example tax records) |
| What you choose to sync: settings, display name, course progress, practice records, saved words and lists | To keep them the same on all your devices | Until you turn sync off or delete your account |
| Your notes, only if you also turn on notes sync | Same as above | Removed from our servers when you turn notes sync off |
| AI usage records: which feature, how much, when (never what you wrote or said) | Weekly allowances and cost control | Until you delete your account |
| AI replies you choose to report, with your reason | To review problems with the AI coach | 12 months, then deleted |
| Lesson or exam problems you choose to report, with any note you add | To fix mistakes in our content | 12 months, then deleted |
| Add-ons you buy (extra AI practice estimates, extra mock test sets) and how many credits are left | To give you what you bought | Until you delete your account, unless the law requires longer |
| Codes you redeem, and the times you tried a code (not the code you typed) | To give you the code's plan and to stop people guessing codes | Until you delete your account |
Crash reports don't need an account and aren't linked to one. They are sent only when you tap Send a crash report or turn on automatic reports in Profile > Privacy and data. A report has the technical error, the name of the screen, the app version and the type of device (iPhone, Android or web), never your words, notes, recordings or account details. We keep crash reports for 90 days.
When you delete your account or turn off sync, the data leaves our live database straight away. Copies can stay in our database provider's encrypted backups for a short time until they are overwritten [verify the Supabase backup retention for our plan].
We never receive your card details. Payments are handled by Apple, Google or our web payment provider.
The AI coach
The AI features are Talk, explanations, rehearsals, exam feedback, shadowing scripts, the phrase generator and "Why did these words slip?". When you use them, the text you send goes through our servers to Anthropic, our AI provider, so it can write a reply. That text can be your message, your writing, a transcript of your speaking, the situation or topic you describe, the word you asked about, or a practice sentence with the words the speech recognizer heard differently.
- We don't store this text, and we don't write it to our logs.
- Anthropic processes it under its commercial terms. Under those terms it doesn't use it to train its models, and keeps it only for a limited time for safety and abuse monitoring [verify the current retention period].
- AI replies can be wrong. Exam feedback is a practice estimate, not a test result.
Speech recognition and recordings
- Recordings: they stay on your device. We never upload them.
- Speech-to-text on the device: when your device can turn speech into text by itself, it does.
- When the device can't do it alone: the app asks before using the online speech service of your phone or browser company (Apple, Google or the browser maker). That company handles the audio under its own privacy terms. Euphemo never receives it.
- Model voices: the practice voices use your device's built-in text-to-speech. They read lesson text, not anything you wrote [verify whether any platform voice sends text to the network].
Picture search
If you tap See pictures on a word, your browser opens Google Images for that word. Google receives that search under its own privacy terms. Euphemo doesn't receive the search or the pictures, and doesn't store either.
How we use information
We use it to:
- provide the app and your plan;
- sync your devices;
- run the AI coach within fair allowances;
- prevent abuse;
- answer support requests;
- fix content problems;
- meet our legal obligations.
We don't use it for advertising, and we don't sell or rent it to anyone.
Companies that help us run Euphemo
These service providers process information only to provide their service to us:
| Provider | What it does for us |
|---|---|
| Supabase | Database, sign-in and server functions [verify the hosting region] |
| Anthropic | The AI model behind the coach |
| RevenueCat | Subscriptions and one-off purchases from the App Store, Google Play and our web checkout [verify the web payment processor RevenueCat uses for us, for example Stripe] |
| Apple and Google | App stores, payments, optional sign-in and on-device or online speech recognition |
| Cloudflare | Our website and support email |
Some of these providers process information outside Canada, including in the United States. When that happens, the information is protected by contract. It may also be available to authorities in those countries under their laws.
Your choices and rights
- See and download your data: Profile > Account and sync > Download my account data, and Profile > Privacy and data > Export my data for what is on this device.
- Correct it: change your settings in the app, or contact us.
- Delete your account: Profile > Account and sync > Delete my account (also linked from Privacy and data), or follow the steps at https://learneuphemo.com/delete-account. This deletes your account and everything stored with it on our servers, and we ask RevenueCat to delete its customer record for you [verify]. If you subscribed through the App Store or Google Play, cancel the subscription there too.
- Withdraw consent: turn off sync, notes sync, automatic crash reports or online speech recognition at any time.
- Complain: if you're unhappy with how we handle your information, contact us first. You can also contact the Office of the Privacy Commissioner of Canada or the privacy authority where you live.
Depending on where you live, you may have more rights under local law. Contact us to use them.
Age
Euphemo is for adults (18 and over). It isn't directed at children. If we learn that a child has given us personal information, we'll delete it.
Security
Information is encrypted in transit. On our servers, access is limited so that each account can reach only its own data. Our staff access it only when needed to run the service. No system is perfectly secure, so please keep your sign-in details private.
Changes
If we change this policy in a way that matters, we'll tell you in the app before the change takes effect.
Contact
Argusis Technology Inc. · [companyAddress to be added] · [supportEmail to be added]