Duolingo: Language Lessons
Data calls made by Duolingo: Language Lessons
Overview of network connections made by Duolingo: Language Lessons during the first 60 seconds after installation.
Duolingo: Language Lessons contacted 4 different domains within the first minute of opening. This data was collected from 3 independent scans We identified 0 ad creatives being loaded, confirming active ad monetization. across servers in 🇺🇸, providing transparency into the app's actual network behavior and data sharing practices.
Scan Runs
3
Unique Domains
4
Ad Creatives Found
0
Countries
🇺🇸
Contacted Domains (4)
| February 18, 2026 at 00:34:37 | Firebase firebaseinstallations.googleapis.com/v1/p... | 🇺🇸 Google LLC | Request: application/json Response: application/json | ||
| February 18, 2026 at 00:34:41 | Facebook graph.facebook.com/v14.0/app | 🇺🇸 Facebook, Inc. | Request: application/x-www-form-urlencoded Response: text/javascript | ||
| February 18, 2026 at 00:34:41 | Facebook graph.facebook.com/v14.0/app | 🇺🇸 Facebook, Inc. | Request: application/x-www-form-urlencoded Response: text/javascript | ||
| February 18, 2026 at 00:34:41 | Facebook graph.facebook.com/v14.0/app | 🇺🇸 Facebook, Inc. | Request: application/x-www-form-urlencoded Response: text/javascript | ||
| February 18, 2026 at 00:34:41 | Facebook graph.facebook.com/v14.0/app | 🇺🇸 Facebook, Inc. | Request: application/x-www-form-urlencoded Response: text/javascript | ||
| February 18, 2026 at 00:34:41 | Firebase play-fe.googleapis.com/fdfe/intermediateI... | 🇺🇸 Google LLC | Request: application/x-protobuf Response: application/protobuf | ||
| February 18, 2026 at 00:34:41 | duolingo.com zombie.duolingo.com/0/android.json | 🇺🇸 Amazon.com, Inc. | Request: Response: text/html | ||
| February 18, 2026 at 00:34:42 | Google www.googleadservices.com/pagead/conversion | 🇺🇸 Google LLC | Request: Response: text/html | ||
| February 18, 2026 at 00:34:42 | Google www.googleadservices.com/pagead/conversion | 🇺🇸 Google LLC | Request: Response: text/html | ||
| February 18, 2026 at 00:34:43 | duolingo.com android-api-cf.duolingo.com/2017-06-30/co... | 🇺🇸 Amazon.com, Inc. | Request: Response: application/json | ||
| February 18, 2026 at 00:34:43 | duolingo.com android-api-cf.duolingo.com/2017-06-30/co... | 🇺🇸 Amazon.com, Inc. | Request: Response: application/json | ||
| February 18, 2026 at 00:35:27 | Firebase firebaselogging.googleapis.com/v0cc/log | 🇺🇸 Google LLC | Request: application/json Response: application/json | ||
| February 18, 2026 at 00:35:28 | Firebase firebaselogging-pa.googleapis.com/v1/firelog | 🇺🇸 Google LLC | Request: application/json Response: application/json | ||
| February 18, 2026 at 00:35:35 | duolingo.com excess.duolingo.com/batch | 🇺🇸 Amazon.com, Inc. | Request: application/json Response: text/plain | ||
| June 21, 2025 at 01:01:38 | Google www.googleadservices.com/pagead/conversion | Request: Response: text/html | |||
| June 21, 2025 at 01:02:07 | Firebase android.googleapis.com/auth/devicekey | Request: application/x-protobuf Response: text/html | |||
| June 21, 2025 at 01:02:07 | Firebase firebaselogging.googleapis.com/v0cc/log | Request: application/json Response: application/json | |||
| June 21, 2025 at 01:02:07 | Firebase firebaselogging-pa.googleapis.com/v1/firelog | Request: application/json Response: application/json | |||
| June 21, 2025 at 01:02:32 | Firebase play.googleapis.com/play/log | Request: Response: text/plain | |||
| June 21, 2025 at 01:02:32 | Firebase play.googleapis.com/play/log | Request: application/x-gzip Response: text/plain | |||
| June 21, 2025 at 01:02:37 | duolingo.com zombie.duolingo.com/0/android.json | Request: Response: text/html | |||
| October 20, 2025 at 00:13:12 | Google www.googleadservices.com/pagead/conversion | Request: Response: text/html | |||
| October 20, 2025 at 00:13:27 | Firebase android.googleapis.com/auth/devicekey | Request: application/x-protobuf Response: text/html | |||
| October 20, 2025 at 00:14:10 | duolingo.com zombie.duolingo.com/0/android.json | 🇺🇸 AMAZON-02 | Request: Response: text/html |