This policy explains what EP Companheiro collects, what it does with it, and who else is involved when you use the app. It's written to be read, not just filed.

The short version

We do not store the text of your translations, questions, or lookups on our servers. It's processed to produce your result, then it's gone from our side.
Your history stays on your device. Nothing you translate is uploaded to us for storage or synced between devices. You can clear it any time in the app.
We never use your text to train AI, and we don't sell your data.
To actually translate, your text is sent — over an encrypted connection — to OpenAI, the AI provider that powers the app. That's the one place your content goes outside your device.
The only things we keep are your account (email + a scrambled/hashed password) and anonymous usage counts (how many requests you made and roughly how large), which we use to run the service and keep costs sane.

Who we are

EP Companheiro ("the app", "we", "us") is operated by Professor Caloiro Digital Products, based in Portugal. Questions or requests about your data: jimr@professorcdp.com.

What the app does

EP Companheiro translates between English and European Portuguese and offers related learning tools (natural-phrasing suggestions, a language-and-culture tutor, and a word/expression profiler). Some of these use a large language model, which is why your text is sent to an AI provider to generate results.

What we collect, and why

1. Your account — the email address and password you create.

Your password is stored only as a salted hash (PBKDF2). We cannot see or recover your actual password; nobody at Professor Caloiro Digital Products can read it.
We use your account to sign you in and to grant access on all your devices.

2. Usage records (metadata only) — for each request, we store: which account made it, which feature was used (e.g. "translate"), which AI model, the number of tokens (a rough size measure), and the time.

We do not store the text you enter, the images or documents you send, or the results you receive. The usage record contains counts and timestamps only.
We use this to operate the service, prevent abuse, apply fair-use limits, and understand overall cost — not to profile you.

3. Content you translate (not stored by us) — the text, photos, or documents you submit are sent to our AI provider to produce your result and are not written to our databases or logs. See "Who else is involved" below.

4. On-device history (stays on your device) — the app keeps a local history of your recent translations and lookups so you can revisit them. This lives in the app's private storage on your device only; it is not uploaded to us. You can erase it any time with Clear all in the app, or by deleting the app.

We do not collect your contacts, location, or advertising identifiers, and we do not use tracking or advertising cookies.

Who else is involved (subprocessors)

To provide the service, your request passes through two third parties:

OpenAI — performs the translation/analysis. The text (and any photo or document) you submit is sent to OpenAI to generate your result. Per OpenAI's API terms, submissions are not used to train their models, and are retained only for a limited period for abuse monitoring before deletion. OpenAI is based in the United States. (See OpenAI's current API data-usage and retention terms for the authoritative, up-to-date details.)
Cloudflare — hosts our backend and carries the request in transit. It acts as infrastructure and does not retain the content of your requests for us.

All connections between the app, our backend, and OpenAI are encrypted in transit (HTTPS/TLS). We do not sell or share your data with anyone for advertising, and we have no other third-party recipients.

Payments

During the beta, the app is free. If and when paid plans launch, purchases will be handled by Apple's App Store, Google Play, and/or RevenueCat. Those providers process your payment; we do not receive or store your card number.

Data retention

Account data: kept while your account exists.
Usage metadata: kept to run and cost-manage the service; not tied to the content of what you translated.
Your translated content: not retained by us at all (held only transiently to produce your result, and briefly by OpenAI per their terms).
On-device history: retained on your device until you clear it or remove the app.

How we protect your data

Encrypted connections everywhere (HTTPS/TLS).
Passwords stored only as salted hashes, never in plain text.
The AI provider's key lives only on our server and is never placed in the app.
We do not log the content of your requests, by design.

No system is perfectly secure, but we work to keep the amount of data we hold — and therefore the amount at risk — as small as possible.

Your choices and rights

See or delete your account data: email jimr@professorcdp.com and we'll provide or delete your account information. (Account deletion is currently handled by request; a self-serve option may be added later.)
Clear your history: use Clear all in the app, or delete the app.
As we are based in the EU, the GDPR applies. Depending on where you live, you may have rights to access, correct, delete, export, or object to certain processing of your data. Contact us to exercise them.

Children

EP Companheiro is not directed to children under 13 (or the minimum age in your country), and we don't knowingly collect their data.

Changes to this policy

We may update this policy; we'll change the "Last updated" date above and, for significant changes, notify you in the app.

Contact

Questions, requests, or concerns: jimr@professorcdp.com — Professor Caloiro Digital Products, Portugal.

How we compare to other translation tools

People switching from another translator often ask, reasonably, "is my text more or less private here?" Here's a straight answer that sticks to what we do — we encourage you to check any other service's current policy yourself, since those can change.

What's true of EP Companheiro

We don't store what you translate. Your queries and results aren't saved on our servers; your history stays on your device.
Your text is never used to train AI.
To translate, your text is sent to a third-party AI provider (OpenAI) over an encrypted connection, which processes it and, per their API terms, doesn't train on it and keeps it only briefly. This third-party step is what lets us offer more than plain translation — the Context, Language & Culture, and Word Profile tools all rely on that AI.

How to think about the trade-off

Some free translators improve their models using the text people type in. We don't — nothing you enter trains an AI, and we keep none of it.
Some paid, enterprise translators run their own engine (your text goes to one company, not a third party) and back it with formal certifications and contractual immediate-deletion. We don't run our own engine — we rely on OpenAI — and we don't yet carry those certifications. If single-vendor processing with audited guarantees is a hard requirement for you, a certified enterprise service may fit better; for most everyday use, "not stored, not trained on, encrypted" is the practical bar, and we meet it.

The honest summary: we hold very little about you, we never train on your text, and the one place your content travels is to the AI that produces your result.

This section states our own practices only. We deliberately don't quote other services' policies here, because they change — please compare against their live, official terms.