Tendril

Privacy Policy

Last updated: 22 July 2026

This Privacy Policy explains what information the Tendril logic puzzle (“Tendril”, “the app”, “we”, “us”) collects, how we use it, and the choices you have. Tendril is published by MJK APPS SRL. If you have any questions, contact us at contact@fluttech.com.

1. Information we process

On your device only

Your puzzle progress, best times, streaks, daily history, hint balance, Seeds, water and app settings — and the display name you play under — are stored locally on your device. This information stays on your device except for the specific items listed below.

Accounts and cloud data

Tendril uses Firebase Authentication. When you first open the app it creates an anonymous account — a random identifier with no name, email address or other personal detail attached. This is what your garden and your leaderboard entry are stored against, and it lets the game work without ever asking you to register.

You may additionally choose to sign in with Google or Apple, which upgrades that anonymous account so your data can follow you to a new device. When you do, we receive your name and email address from that provider. With Apple you may choose “Hide My Email”, in which case we only ever receive a private relay address.

The following is stored in Cloud Firestore and linked to your account:

• the display name you choose (or one you are offered);
• your number of solved puzzles and your water balance;
• your times on today’s daily puzzles, in each mode;
• your garden — which plants you have placed, where, and how far each has grown.

Your display name and your daily solve times are visible to other players on the public daily leaderboard. Nothing else is — your garden is yours alone.

We also keep a small set of anonymous counters (how many puzzles were solved today, this week and in total across all players). These are totals only and are not linked to you.

Usage analytics

We use Google Firebase Analytics to understand, in aggregate, how the game is used — which screens and features are opened, how puzzles are started and completed, and where players run into difficulty — so we can improve the app. These events are tied to a random, app-generated instance identifier, not to your name or email. The analytics data is exported to Google BigQuery, which we use only for our own internal product analysis. We do not use it to build advertising profiles, and we do not share it with third parties for their own purposes. You can turn analytics off at any time in the app under You → Settings → Share anonymous analytics.

Advertising

Tendril shows a single banner ad at the bottom of the screen while you are solving. There are no full-screen ads and no rewarded videos. Ads are supplied by Google AdMob (provided by Google LLC / Google Ireland Ltd). To deliver, frequency-cap and measure ads, AdMob may process information about you and your device, including the device’s advertising identifier, IP address, approximate (coarse) location derived from that IP address, device and operating-system details, and basic information about how you interact with the ads. Some of this processing is considered “tracking” under Apple’s App Tracking Transparency framework.

Personalisation. Ads are served non-personalised by default — they are based on general context rather than a profile of you. Where we offer a choice (through Google’s consent form, or Apple’s App Tracking Transparency prompt on iOS), you may opt in to personalised ads; if you do nothing, you will still see ads, but they will not be personalised. Buying Tendril Complete removes ads entirely. For full details of how Google uses this data, see the Google Ads technologies and Google Privacy Policy.

In-app purchases

Tendril offers two optional in-app purchases: Tendril Complete (unlimited hints, no ads, every puzzle pack and the full daily archive) and a bundle of 10 Seeds for planting in the garden and opening packs. Purchases are handled entirely by Apple’s App Store or Google Play — we never receive or store your payment-card details. We receive only confirmation that a purchase completed, together with the product purchased and its price, which we record as a usage-analytics event so we can understand the game’s economy.

2. How we use your information

• To run the game and save your progress.
• To keep your garden and your profile, and to show the daily leaderboard.
• To show a banner ad so the app can be offered for free.
• To process the optional in-app purchases.
• To understand how the game is used and improve it (analytics).
• To respond to any message you send us.

3. Service providers

We rely on the following providers to run these features:

• Google Firebase — Authentication, Cloud Firestore and Analytics (provided by Google LLC / Google Ireland Ltd). See Firebase privacy and the Google Privacy Policy.
• Sign in with Apple and Google Sign-In — used only if you choose to sign in. See the Apple and Google privacy policies.
• Google AdMob — used to serve the in-app banner ad. See AdMob privacy & security.
• Apple App Store / Google Play Billing — used to process the optional in-app purchases.

Beyond AdMob’s role in serving ads (described above), we do not share your data with third parties for their own purposes.

4. Sharing and selling

We do not sell your personal data. We share the limited information described in the “Advertising” section with Google AdMob so it can serve and measure ads. Aside from that, the only information visible to other people is the display name and daily times you publish to the leaderboard.

5. Keeping and deleting your data

• Local data — progress, settings, Seeds and water — is removed when you uninstall the app.
• You can permanently delete your account and all its cloud data — profile, garden and leaderboard entries — at any time from You → Account & sync → Delete account inside the app. If you signed in with Google or Apple, the app asks you to sign in once more to confirm it is you. Your progress on the device is untouched and you can keep playing as a guest. You can also email contact@fluttech.com. See our account-deletion page for exactly what is removed.
• Daily leaderboard entries from past days age out automatically.

6. Your rights (EU/EEA — GDPR)

You have the right to access, correct, export and erase your personal data, to restrict or object to processing, and to lodge a complaint with your local data-protection authority. To exercise any of these, contact us at the address below.

Our legal bases for processing are: providing the features you request (account, garden, leaderboard) under contract; our legitimate interest in keeping the app free (non-personalised advertising) and analysing usage to improve the game; and your consent for personalised ads and tracking, which you can grant or withdraw where the choice is offered.

7. Children

Tendril is a general-audience puzzle game and is not directed at children below the age of consent in their country. We do not knowingly collect personal data from children. If you believe a child has provided us with personal data, contact us and we will delete it.

8. Security

Data is transmitted over encrypted connections (HTTPS/TLS). Cloud data is protected by Firebase security rules so that each account can only read and write its own records; the shared counters can only be incremented, never read back as individual entries.

9. Changes to this policy

We may update this policy from time to time. We will update the date at the top and, for significant changes, note it in the app.

10. Contact

MJK APPS SRL
contact@fluttech.com