Privacy notice

Who we are

LinguaFlow is published by Aero Sapiens Private Limited under the AeroSapiens brand (“AeroSapiens”, “we”, “us”).

Privacy contact: info@aerosapiens.in

Under review: whether further company or grievance-contact details must be listed here.

Summary

• LinguaFlow is a French-learning website. There is no sign-up, no account and no login. The first three lessons are free. Other lessons need a Premium pass, which you pay for once.
• If you buy a pass, your payment is handled by Razorpay. We keep a tax invoice with your email address, phone number and state, as tax law requires. We never receive your card, UPI or bank details.
• Your progress, answers and writing are saved in your browser on your device. The LinguaFlow app does not upload them to our server.
• Like any website, our hosting provider’s servers receive and log technical information, such as your IP address, when your browser loads the site.
• We use Google Analytics to count visits to the website. It sets cookies and receives technical information from your browser, but never your progress, answers, writing or voice. LinguaFlow has no advertising.
• Speaking practice uses your browser’s own speech recognition. Depending on your browser and device, your voice may be processed by the browser maker’s online service.

Information stored on your device

The LinguaFlow app saves the following in your browser’s local storage, on your device:

• your settings: daily goal, speech speed, autoplay, colour theme and chosen course;
• your learning progress: completed lessons, points (XP), a daily activity log by date, review-word schedules and placement-check results;
• your recent mistakes, including the answers you typed, so you can review them;
• writing you save in writing exercises, with its word count and checklist;
• mock-paper attempts, if you use them.

The app does not send this information to our server, and it does not sync between devices. Anyone using the same browser on the same device can see it. If saved data cannot be read (for example, it is damaged), the app keeps the unreadable copy on your device instead of deleting it.

Offline use. To work offline, the app keeps a copy of its files and the course content you open in your browser’s cache. This cache holds course material, not your progress or answers.

Backup files. Settings → Export backup creates a file containing the information above. It is saved wherever you choose, and we never receive it. Import reads a backup file on your device; it is not uploaded. Keep backup files safe, because they contain your answers and writing.

Information our server and hosting provider receive

When your browser loads LinguaFlow, it requests the app’s files and course content from our server. These requests necessarily include technical information such as your IP address, the date and time, the address requested, and the browser information your browser sends.

The LinguaFlow application itself does not record a log of requests and does not store IP addresses. To protect the service from overload, it counts requests per IP address in memory only; each count is discarded within about two minutes and is never written to disk. It records technical error messages, which do not include your answers, writing or progress.

Our hosting provider. LinguaFlow is hosted on shared hosting provided by DomainIndia, which processes information under its own privacy policy. That published policy says that access logs can include IP addresses and timestamps, that “device insights” may include browser and operating-system information and behavioural patterns, that regulatory logs are kept within India for at least 180 days, and that backups may be kept for up to 30 days. Those are the provider’s general statements; we have not independently confirmed the exact logs or retention settings for our hosting account.

We use technical information only to deliver, secure and maintain the website.

Under review: further statements about how technical information is used and shared.

If you buy a Premium pass

Who collects your payment. Payments are collected by Varshney Infotech Private Limited, the development partner of Aero Sapiens Private Limited, under the same leadership. Tax invoices are issued by Varshney Infotech Private Limited. Aero Sapiens Private Limited is responsible for resolving any payment issue. Contact: info@aerosapiens.in.

What Razorpay receives. You enter your payment details, email address and phone number directly in Razorpay's checkout. Razorpay processes them under its own privacy policy. LinguaFlow never receives your card, UPI or bank details.

What we keep. For each pass we store:

• the payment ID, pass type, amount and tax
• your email address and phone number, as given to Razorpay
• your state, which decides how GST applies
• if you ask for a business invoice: your GSTIN, the name to bill to and the billing address
• the tax invoice number and dates

Why. To issue the tax invoice, keep the tax records the law requires, answer questions about your payment, and restore your pass if you ask.

How long. Invoices and payment records are kept for as long as tax law requires. They cannot be deleted before then, even on request.

What stays separate. Your lesson progress, answers, writing and voice stay as described in the rest of this notice. They are not linked to your payment and are not sent to us.

Cookies, analytics and third parties

• Google Analytics. We use Google Analytics 4, provided by Google, to count visits and understand how many people use the website. It sets cookies in your browser and receives technical information such as your IP address (which Google says GA4 does not store), browser and device type, approximate location derived from it, the page address without the in-app screen, and how you arrived. It does not receive your progress, answers, writing, saved backups or voice. Google processes this under its own privacy policy. You can block it with your browser’s tracking protection, an ad blocker or Google’s opt-out add-on.
• If you buy a pass, LinguaFlow sets one essential cookie, lf_pass. It holds your signed pass and its payment reference, and lasts until your pass ends. It is what opens Premium lessons in your browser. The app sets no other cookies, and has no advertising or social-media plug-ins.
• Razorpay. When you open the checkout page, Razorpay's payment window loads from Razorpay's own website and may set its own cookies. It loads only on the checkout page.
• Sharing. The invite and share buttons open the network you choose, such as WhatsApp or Facebook. Nothing is sent until you tap one, and that network's own privacy policy then applies.
• Apart from Google Analytics and Razorpay's checkout, the app loads its scripts, styles, fonts and images from its own server only.

Under review: confirmation that the hosting platform adds no cookies or tracking of its own.

Microphone and speech features

Speech features depend on your browser and device.

• Listening uses your browser’s built-in text-to-speech to read lesson text aloud. The app prefers voices installed on your device; if your browser only offers an online voice, the lesson text may be processed by the browser maker’s service.
• Speaking practice uses your browser’s built-in speech recognition. Your browser asks for microphone permission when you start a speaking exercise; the microphone is not used otherwise.
• In some browsers (for example Google Chrome), speech recognition sends your voice to the browser maker’s servers to be processed. That processing is done by the browser maker under its own privacy policy, not by AeroSapiens, and we do not control it.
• The app receives only the recognized words from your browser, shows them on screen to compare with the phrase, and does not save them. Our server never receives your audio or the recognized words.
• You can skip any speaking exercise, refuse microphone permission, or withdraw it at any time in your browser’s site settings.

Under review: whether additional notice or consent is needed before speech recognition starts.

Children and young learners

LinguaFlow is open to French learners of any age, including people under 18. The current beta offers a beginner French course; curriculum-aligned courses for school students are planned for a future version and are not part of the current offering.

LinguaFlow has no accounts, and the free lessons do not ask for a learner’s name, age, school or contact details. Passes are for buyers aged 18 or over. If the learner is under 18, a parent or guardian must accept the pass terms, make the payment and supervise its use. The contact details on a pass are the payer's. We are not responsible for payments made by a minor without the supervision of a parent or guardian.

Technical information such as IP addresses is processed when any visitor, including a child, uses the site.

Under review: obligations for users under 18, including any parental-consent requirements and whether Google Analytics may be used for visitors under 18.

Your choices and deleting your data

• Progress on your device: Settings → Reset progress deletes your saved progress in this browser. It does not remove unreadable copies kept after a damaged save, or the offline cache. To remove everything, clear this website’s stored data in your browser settings (often called “site data” or “cookies and site data”).
• Backup files you exported stay where you saved them until you delete them.
• Certificates: if you earn a certificate, you can type the name to print on it. The name stays in your browser and only leaves your device if you choose to download, email or share the certificate.
• Payment records: to ask about your payment details, or to correct them, write to info@aerosapiens.in with your payment ID. Records the law requires us to keep stay until that period ends.
• Questions and requests: we do not hold an account or profile for you. If you bought a pass, we hold the payment records above. For questions about technical logs or any privacy request, email info@aerosapiens.in.

Under review: how requests are verified and answered, and response times.

Your rights

Under review: the privacy rights that apply under Indian law, and any grievance or complaint route.

Changes and contact

We will update this notice if LinguaFlow changes how it handles information, for example if accounts or school courses are added.

Aero Sapiens Private Limited (AeroSapiens / LinguaFlow) · info@aerosapiens.in