Privacy Policy — Das Material
Last updated: July 13, 2026 · Effective: July 13, 2026
Das Material is an Android app that keeps the vehicles you own and reminds you before your papers expire. This policy is written in plain English and describes the app as it ships today — when it starts collecting something new, this page changes before that ships, not after. If anything is unclear, write to the grievance officer below.
Who we are (Data Fiduciary)
- Name: Bharat Patodi (individual data fiduciary)
- Project: Das Material
- Country of operation: India
Das Material is in early validation with a small cohort. There is no separate company entity at the time of this version.
What we collect, and why
Everything below is data you type in. There are no trackers that follow you around, and the app does not read your contacts, location, call logs, photos, or other apps.
| What | Why we need it | Required? |
|---|---|---|
| Email address | It is your sign-in. Nothing else. | Yes — you need an account to save a vehicle |
| Your name | So the app can address you. A display name — whatever you want to be called | Yes, at sign-up |
| Vehicle details — make, model, variant, colour, year, body type | To show you your vehicle and identify it back to you | No — but the app is not much use without one |
| Insurance and PUC expiry dates | To remind you before they lapse | No. A vehicle with no dates is perfectly valid — you simply get no reminders for it |
| App usage events, device model, OS, app version, language | Captured by our analytics provider (PostHog) so we can tell which parts of the app work | Automatic |
We do not collect your phone number, address, registration/plate number, location, documents, or photos. We do not use advertising identifiers. We show no ads. We do not sell or rent your data — ever.
What analytics can and cannot see
This is the part most apps are vague about, so here it is precisely. PostHog receives:
- An opaque account identifier — a random id generated by our backend. Not your email, not your name.
- Which actions happened— e.g. "a vehicle was added", "a reminder was opened".
- Basic device and app context — device model, operating system, app version, language.
PostHog does not receive:
- Your email address or your name — no way to work out who you are.
- Your location. We switch off IP-based location lookup, so it is not even inferred.
- Your vehicles' details.
- No screen recording. No session replay. No automatic capture of your taps or text — we send only the specific events we have named in our code.
When you delete your account, we delete your PostHog record and its events too.
Reminders never leave your phone
Reminders are local notifications, scheduled on your own device. Your expiry dates are not sent to any push-notification service to make a reminder happen — not to Google, not to us, not to anyone. Your phone holds the schedule and your phone fires the reminder.
The app asks for notification permission the first time you save a date— never on the splash screen. If you say no, the app keeps working; you just don't get nudged.
Who we share data with (Processors)
| Processor | What they do for us | Location |
|---|---|---|
| Appwrite | Hosts our database and authentication — your account and every vehicle you save | European Union — Frankfurt |
| PostHog, Inc. | Product analytics — an opaque id and what happened, as described above | United States |
| Google Play Services | Distributes the app + baseline crash reporting | Google Cloud regions |
That is the entire list. We do not share your data with advertisers or data brokers, and we send it to no AI provider.
Cross-border transfer
Your personal data is stored outside India, and the split is deliberate:
- Everything that could identify you — your email, your name, your vehicles and their dates — stays in the European Union (Appwrite, Frankfurt).
- Only anonymous usage events leave it (PostHog, United States). Those carry an opaque id, not your identity.
Neither provider offers an Indian region. Under the DPDP Act, transferring personal data outside India is permitted. Data is encrypted in transit.
Your vehicles are readable only by you
Access is enforced per record, on the server — not merely hidden in the app. No other user of Das Material can read your rows.
How long we keep your data
- Account data (email, name, vehicles, dates): retained until you delete your account.
- Analytics events: deleted along with your PostHog record when you delete your account.
- Deleted accounts: gone immediately — not archived, not soft-deleted, no grace period.
Deleting your account
In the app: You → Delete account. It asks you to confirm once, because it cannot be undone. It removes every vehicle, every date, your analytics record, and your account itself — including your email and name.
Full instructions, including what to do if you cannot get into the app, are on the Account & Data Deletion page.
Your rights under the DPDP Act 2023
- Access — ask us what data we hold about you (§11).
- Correction — ask us to fix anything wrong (§12). Vehicle details are editable in the app.
- Erasure — delete your account yourself, in seconds, from inside the app (§12). Or ask us.
- Nomination — nominate someone to exercise your rights if you become incapacitated (§14).
- Withdraw consent — at any time, and as easily as you gave it (§6(4)).
You do not need to justify a deletion request, and we will not try to talk you out of one.
Children's data
Das Material is for users 18 years and older. We do not knowingly collect or process the personal data of anyone under 18 (DPDP §9). If you believe a child has registered, contact the grievance officer and we will delete the account immediately.
Security
Your data is encrypted in transit (TLS 1.2+) and at rest via our processors' defaults. We are honest about our scale: Das Material is an early-stage app with a small cohort and no dedicated security team. If you find a vulnerability, please email the grievance officer privately before disclosing publicly — we will respond within 48 hours.
Grievance Officer
Per DPDP §8(9), this is the person you contact for anything privacy-related — access, deletion, complaints, or questions:
- Name: Bharat Patodi
- Email: bharatpatodi@gmail.com
- Response time: within 7 days of receipt
If you are not satisfied with our response, you may register a complaint with the Data Protection Board of India.
Changes to this policy
If we change what we collect, we update this page and the "Last updated" date above before the change ships. Material changes are surfaced in the app, not buried here.
Das Material (Play Store Internal Testing, Production track to follow) · Last reviewed July 13, 2026