Privacy policy
Last updated 12 November 2026
This policy explains what Popglot (the Android and Android TV app, and popglot.com) does with personal data. Popglot is published on Google Play by Slekio. Contact for privacy questions: [email protected].
The short version
- You can use Popglot without an account. Signing in with Google is optional.
- Subtitles are fetched and processed on your phone. Their text is never stored on our servers.
- Your saved words, review history and watch history are stored on your phone.
- We never sell personal data and show no ads of our own.
- You can delete your account and data at any time in the app.
What we process and why
| Data | Purpose | Where it's kept |
|---|---|---|
| A random install identifier (stored only as a one-way hash) | Creating your anonymous account and applying the free daily limits | Our server, until you delete the account |
| Google account id, e-mail and name (only if you sign in) | Signing in and keeping Pro on your devices | Our server, until you delete the account |
| Preferences: languages, level, interests, moods, video length, content filters, hidden channels | Recommending videos | Our server and your phone |
| Text you type into the AI search | Turning your request into YouTube searches | Sent to our server and our AI provider; the resulting search plan is cached for up to 30 days, linked to a hash of the request, not to you |
| A word you tap and the subtitle sentence around it | Explaining the word in context | Sent to our server and our AI provider; only the explanation is cached (under a hash), the sentence is not stored |
| Subtitle lines (Pro AI translation only) | Translating them | Passed through our server to our AI provider and back; not stored |
| Numbers about a video (speaking speed, words per line, share of rare words, which subtitle languages exist, whether subtitles loaded) | Estimating video difficulty for everyone | Our server, without any link to you |
| Feedback you give (too hard, too easy, hide channel…) | Improving your recommendations | Our server, until you delete the account |
| Daily usage counters (explanations, searches) | Free and Pro limits | Our server, up to 30 days |
| Subscription status | Unlocking Pro | Our server; payments are handled by Google Play |
| Saved words, reviews, watch history, watch later, settings, a 7-day subtitle cache | Running the app | Only on your phone (and in Android's own device backup if you use it) |
| Server logs (IP address, time, request) | Security and abuse prevention | Up to 14 days |
Microphone (Live Listen)
Live Listen uses your phone's speech recognition service only while you have it switched on. Depending on your phone, speech is recognised on the device or by the speech service's provider (usually Google). Popglot does not record, store or upload audio.
YouTube
Popglot uses YouTube API Services to search and describe videos, and plays videos in YouTube's embedded player. When a video plays, YouTube and Google may collect data as described in the Google Privacy Policy. By using Popglot's video features you also agree to the YouTube Terms of Service. Popglot never asks for access to your YouTube account.
Service providers
- Hetzner Online GmbH: server hosting in the EU (Finland).
- Cloudflare, Inc.: DNS and network protection for popglot.com.
- DeepSeek: the AI model for search planning, word explanations and Pro translations. It receives only the text needed for each request, never your account details. Its servers are in China; we rely on the safeguards available for international transfers.
- Google: Sign in with Google, Google Play billing, YouTube API Services, and on-device translation models (ML Kit).
- RevenueCat, Inc.: subscription status for Pro (USA), identified by your Popglot account id.
Your rights
You can access, correct, export and delete your data. Delete everything in the app under Profile → Delete account and data, or see how to delete your account. For a copy of your data, write to [email protected]. If you're in the EU/EEA or UK you may also complain to your data protection authority.
Children
Popglot is for people aged 13 and over. We don't knowingly collect data from younger children.
Changes
We'll update this page when the app changes and show the new date at the top.