Privacy Policy

2. The WzorAI app

WzorAI creates knitting charts from a description you type in your own words. To generate a pattern, the app connects to the Controller's server, which uses an artificial intelligence model.

2.1. What data we process

• Anonymous identifier (UID) — created by Firebase Authentication on first launch (anonymous sign-in, no email or password). It links your device to your pattern balance and purchases. You can find it in the app under “About”.
• Balance and activity — how many patterns you can still generate and the date of your last activity.
• Purchases — when you buy a pattern pack on Google Play: the purchase token, product ID and purchase status. We never receive payment details such as card numbers — those are handled by Google Play alone.
• Pattern description — the text you type, together with the technical data needed to process it. It goes to our server and to the AI model (section 2.4). Once the pattern is generated, we do not store it in our database.
• Technical data — device model, system version and app error reports. Used only to improve stability.

2.2. What stays only on your phone

Generated charts, your pattern history, the names you give them, favourites, notes, your place in the row counter, calculator results and the PDF files you create are stored only on your device. We have no access to them. Deleting a pattern from the history or uninstalling the app removes them permanently. When you share a chart image or a PDF, you decide who receives it.

2.3. Purposes and legal bases

2.4. Who processes data on our behalf

Google Ireland Limited / Google LLC:

• Firebase Cloud Functions (region us-central1, USA) — the app's server,
• Cloud Firestore (USA) — database of identifiers, balances and purchase statuses,
• Firebase Authentication — anonymous sign-in,
• Google Cloud Pub/Sub — Google Play purchase notifications,
• Google Cloud Secret Manager — secure storage of access keys,
• Google Play Billing — payments.

Google Privacy Policy: policies.google.com/privacy

Anthropic, PBC (USA) — provider of the Claude language model, which creates the pattern from your description. It receives the pattern description together with the technical data needed to process it. Under Anthropic's commercial terms, content sent this way is not used to train models by default.

Anthropic Privacy Policy: anthropic.com/legal/privacy

2.5. How long we keep data

2.6. Security

• all communication with the server is encrypted (TLS/HTTPS),
• access keys are kept in Google Cloud Secret Manager,
• only authorised server services can access the database (Firestore security rules),
• every purchase is automatically verified with Google Play.

2.7. Deleting your data from the server

Write to kontakt@paradrutow.com and include the ID shown under “About” in the app. We will delete the data linked to it: the identifier, balance and activity date. We keep purchase records only to the extent the law requires.

3. The ShiftLens app

ShiftLens turns a photo or file of your work rota into alarms. It runs entirely on your phone: it needs no account, has no server and does not send photos or rotas to the Controller or to anyone else. The only exception is your choice — a report about a misread rota, which you can send by email (section 3.7).

3.1. Permissions

• Camera — to take a photo of the rota.
• Photos and files — to pick a photo from your gallery or an Excel or PDF file. You choose the file in the system picker, and the app gets access to that file only.
• Notifications and exact alarms — so the alarm rings at the right time before your shift, to remind you that your rota is running out and to warn you if the phone turns alarms off. Android asks for separate permission for exact alarms.
• Running after a restart — to restore the alarms you have set.

3.2. Data stored on your phone

• recognised shifts (dates, times, type of day) and your manual corrections,
• your surname, if you enter it (separately for each job if you have two) — used only to find your row on the rota,
• company names and colours if you have two jobs, and the date from which a new job takes over the rota,
• time to get ready and commute, unpaid break, alarm sound, extra alarms and other settings,
• counted hours, overtime and the history of previous months,
• the app language you chose.

The home-screen widget uses the same data. All of it stays only on your device and is not sent to the Controller or to third parties unless you send a report yourself (section 3.7).

3.3. Team rotas and coworkers' data

If the rota includes other employees, the app reads their rows only in the device's memory — for example, to recognise shift codes — and discards them straight away. Only your own shifts are saved, never your coworkers' data. The exception is a rota photo you attach to a report yourself (section 3.7) — it may contain other people's names.

3.4. Google services

• Google ML Kit — text recognition. The model is downloaded once by Google Play services during installation; recognition then happens offline, on the device.
• Google Play — the one-time purchase of the app. Payment is handled by Google alone; we receive no payment details.

The app itself sends no data to the Controller or to anyone else, and apart from these cases it does not need the internet.

Google Privacy Policy: policies.google.com/privacy

3.5. What the app does not do

• it does not require an account or sign-in,
• it does not send photos, files or recognised text to any server,
• it shows no ads,
• it contains no analytics or tracking tools,
• it does not sell or share data with third parties.

3.6. Sharing your rota

When you share your rota as an image, the app creates it on your phone and passes it to the app you choose (for example, a messenger). You decide who gets it; we do not receive it.

3.7. Recognition report sent by email (optional)

If a rota was read incorrectly, you can send a report to the app's developer. ShiftLens opens your own email app with a ready-made message to app@paradrutow.com. Nothing is sent automatically — the message goes out only when you tap “Send” yourself. Before that you can review it, change it or remove attachments.

The report contains:

• the photo or photos of the rota, uncompressed — they may show coworkers' names,
• the recognised text with word positions on the photo and a description of how recognition went,
• the app version, phone model and Android version,
• a numeric summary of the recognition (e.g. how many days were found) and, if the app hit an error, its technical description.

Purpose: solely to improve recognition of this and similar rotas in future versions of the app. Legal basis: your consent, given by sending the message (Art. 6(1)(a) GDPR). Other people's data visible in the photo is processed only to fix the error, on the basis of legitimate interest (Art. 6(1)(f) GDPR).

Retention: photos and recognition data are deleted right after analysis. The message passes through your email provider and ours, under those providers' terms. You can ask us to delete a report you sent at any time.

3.8. Control over your data

Because rota data lives only on your phone, you have full control over it without contacting us. At any time you can:

• delete a single history entry or a day correction,
• clear the whole history (Menu → History),
• clear the cache, including temporary photos (Menu → Settings → Clear cache),
• delete all data at once by uninstalling the app.