Naatkaatti: Tamil Calendar Privacy Policy

Effective date: 24 October 2026. Last updated: 24 October 2026.

This policy is also available in Tamil: தமிழில் படிக்க.

Summary

• There is no account and no sign-up, and the app never asks for your location.
• Your saved days, notes, reminders, rasi, birth nakshatram and settings stay on your device. We never receive them.
• On the phone app, we use Firebase Analytics to see which screens and calendar layers are used. It never includes your personal days, notes, reminders or birth details. In the EU, UK, EEA, Switzerland and India it stays off unless you allow it, and anyone can turn it off in Settings › Privacy.
• There are no ads, and we don't sell your data.

1 Who we are

Naatkaatti: Tamil Calendar (package name com.glintside.naatkaatti) is an Android app for phones, tablets and foldables, with a read-only Wear OS companion app for your watch. It is provided by Glintside ("we", "us" or "our"), which is responsible for your information under this policy.

This policy is published at glintside.com/naatkaatti/privacy.

For any privacy question or request, email hello@glintside.com.

2 No account and no location

There is no sign-up or account. The app never asks for GPS or location permission. Instead, you pick a city from a list, and the app uses it to work out the calendar on your device.

3 What stays on your device

The app stores the following only on your device:

• Your saved personal days, with their titles, notes and repeat rules.
• Your reminder messages and times.
• The rasi and birth nakshatram you choose.
• Your settings.
• The date your free trial started and whether you have unlocked the app.

None of this is sent to Glintside or anyone else. Android cloud backup and device-to-device transfer are turned off for the app, so this information is not copied into your Google backup or to a new phone.

4 Backups

You can save a backup of your data as a file. You choose where the file is saved; there is no Glintside server.

A password is optional. If you set one, the file is encrypted with AES-256-GCM. If you forget the password, the backup can't be recovered, by you or by us.

Where you keep the file, for example on a cloud drive, is your choice, and that provider's own terms and privacy policy apply.

5 Usage statistics (Firebase Analytics)

The phone app uses Firebase Analytics, a service from Google, to show us how the app is used. The watch app has no analytics.

We send only:

• Which screens are opened.
• Which calendar layers are shown or hidden.
• The region group of the city you chose, for example "Europe". We never send the exact city.

We never send your personal day titles, notes, messages or dates, your rasi or birth nakshatram, the content of your reminders, or the contents of your backups.

Firebase also records some standard data: an app-instance ID, your device model, operating system and app version, your country (worked out from your IP address), and session and first-open events.

On our side we have turned off the advertising ID, ad personalisation, Google signals, and granular location and device data. Our Analytics location is set to India.

When analytics is on

Analytics is on by default, except in the European Union, the United Kingdom, the European Economic Area, Switzerland and India. The app decides this from the city you select or your device's region. There, analytics stays off unless you tap Allow on a consent screen, which offers Allow and Don't allow as equal choices.

You can turn analytics off at any time in Settings › Privacy. Collection stops at once.

How long analytics data is kept

Google keeps the event data the app sends for the retention period set in our Google Analytics settings, which is currently Google's default, and then deletes it automatically. Summary reports that don't identify anyone are not affected by this period. Turning analytics off stops new data being sent; data already sent is kept until its retention period ends.

Google handles this data under the Google Privacy Policy. You can read more about how Google uses this kind of data at Firebase privacy and security.

6 Crash and performance reports

Crash and performance data come from Google Play Console (Android vitals). Google collects these under your device's own settings.

7 Calendar data updates

The app downloads a signed calendar data file from static hosting on glintside.com. No account is used and nothing personal is sent. The hosting may keep standard server logs, such as your IP address and the time of the request.

8 Purchases

The app has a 14-day free trial and a one-time unlock, bought through Google Play Billing. Google handles the payment. We receive only the purchase status from Google Play and never see your card or payment details.

9 Device calendar (optional, off by default)

If you turn this feature on, the app asks for calendar permission and writes two local calendars on your phone: one with your saved days, and one with festivals and Tamil Nadu government holidays.

The app doesn't read your other calendars. If you turn the feature off, the app offers to remove these two calendars.

10 Notifications and your watch

The app asks for notification permission only when you save your first reminder.

The watch app receives calendar data and, if you allow sharing, your marked days. These are sent over the Google Play services Wear OS connection between your phone and watch. If you turn sharing off, the watch's copy is deleted, either then or the next time the watch reconnects.

Alerts on your lock screen and watch show "Personal reminder" instead of the reminder text, unless you choose to show the full text.

11 Children

The app isn't directed at children.

12 No ads and no sale of data

The app shows no ads. We don't sell your data.

13 Your rights and choices

You have the right to access your information, to ask for it to be deleted, and to withdraw your consent.

• Most of your information is only on your device. You can see and change it in the app, and uninstalling the app deletes it.
• To withdraw consent to analytics, turn it off in Settings › Privacy. Collection stops at once.
• To remove the app's calendars from your phone, turn the device calendar feature off and accept the offer to remove them.
• To stop sharing with your watch, turn sharing off; the watch's copy is deleted.
• For any other request about information we or our service providers hold, email hello@glintside.com.

14 Changes to this policy

If we change this policy, we will publish the new version at this address with a new "Last updated" date at the top. Where the law requires, we will also give you additional notice.