Lingopanda: Language Learning
Lingopanda (previously PingoLearn) · Build 3.9.1
Static checks identify review items, not a guarantee of safety.
Overview
2 high or critical finding categories to review
Lingopanda: Language Learning (com.pingolearn.languages) scored grade F, 18 out of 100, in a static scan of version 3.9.1 on 2026-10-13. It has 2 high or critical findings among 5 finding categories across 8 occurrences. One finding was confirmed live: an anonymous request reached a backend the app references and it answered without authentication. No credential was used and no stored data was read. 9 tracking SDKs are present in the package, which describes what ships, not what runs or what it sends. This is static analysis of a single build: it does not observe the app running and does not establish that any data is exposed.
Start with these findings
criticalFirebase Realtime Database reference — confirmed publicly readable2 occurrences
Interpretation & review guidance
A Firebase Realtime Database URL. Nearly every app that uses Firebase ships one. It's only an exposure if the database rules are world-readable — that's what live verification checks.
- Evidence
- 2 recorded occurrences in the analyzed APK. These are distinct stored findings, not a count of every source match.
- Verification
- 1 historically verified occurrence at the recorded scan time. Current reachability is not established.
highSlack incoming webhook URL1 occurrence
Interpretation & review guidance
A Slack incoming-webhook URL. Anyone with it can post messages into the connected channel; treat as a secret and rotate.
- Evidence
- 1 recorded occurrence in the analyzed APK. These are distinct stored findings, not a count of every source match.
- Verification
- Static detection; current reachability is not established.
mediumCleartext (HTTP) traffic permitted1 occurrence
Interpretation & review guidance
The manifest permits cleartext (HTTP) traffic. Data sent over plain HTTP can be read or tampered with on the network; modern apps should require HTTPS.
- Evidence
- 1 recorded occurrence in the analyzed APK. These are distinct stored findings, not a count of every source match.
- Verification
- Static detection; current reachability is not established.
Build & components
89 components recorded. Certificate parsing does not validate APK signature integrity.
Inspect build evidence →Findings
5 categories · 8 occurrences. Severity totals describe categories. Expand a finding for interpretation and review guidance.
criticalFirebase Realtime Database reference — confirmed publicly readable2 occurrences
Interpretation & review guidance
A Firebase Realtime Database URL. Nearly every app that uses Firebase ships one. It's only an exposure if the database rules are world-readable — that's what live verification checks.
- Evidence
- 2 recorded occurrences in the analyzed APK. These are distinct stored findings, not a count of every source match.
- Verification
- 1 historically verified occurrence at the recorded scan time. Current reachability is not established.
Evidence preview
- Evidence type
- Static string match
- Representative location
_split_config.arm64_v8a/lib/arm64-v8a/libapp.so- Recorded match
Pattern recorded; identifying value redacted.- Detector rule
firebase_db- Recorded file locations
_split_config.arm64_v8a/lib/arm64-v8a/libapp.so
2 recorded findings have inspectable metadata. Duplicate matches may share a representative location.
Review whether this belongs to intended app functionality or a bundled library. A static match does not establish runtime impact.
Preview evidence and Pro toolsSearch recorded evidence and save private review notes with Pro. $99/month plus applicable tax.
highSlack incoming webhook URL1 occurrence
Interpretation & review guidance
A Slack incoming-webhook URL. Anyone with it can post messages into the connected channel; treat as a secret and rotate.
- Evidence
- 1 recorded occurrence in the analyzed APK. These are distinct stored findings, not a count of every source match.
- Verification
- Static detection; current reachability is not established.
Evidence preview
- Evidence type
- Static string match
- Representative location
assets/flutter_assets/.env- Recorded match
Pattern recorded; identifying value redacted.- Detector rule
slack_webhook- Recorded file locations
assets/flutter_assets/.env
1 recorded findings have inspectable metadata. Duplicate matches may share a representative location.
Review whether this belongs to intended app functionality or a bundled library. A static match does not establish runtime impact.
Preview evidence and Pro toolsSearch recorded evidence and save private review notes with Pro. $99/month plus applicable tax.
mediumCleartext (HTTP) traffic permitted1 occurrence
Interpretation & review guidance
The manifest permits cleartext (HTTP) traffic. Data sent over plain HTTP can be read or tampered with on the network; modern apps should require HTTPS.
- Evidence
- 1 recorded occurrence in the analyzed APK. These are distinct stored findings, not a count of every source match.
- Verification
- Static detection; current reachability is not established.
Evidence preview
- Evidence type
- Parsed app configuration
- Representative location
AndroidManifest.xml- Recorded match
android:usesCleartextTraffic="true"- Detector rule
manifest- Recorded file locations
AndroidManifest.xml
1 recorded findings have inspectable metadata. Duplicate matches may share a representative location.
Review whether this belongs to intended app functionality or a bundled library. A static match does not establish runtime impact.
Preview evidence and Pro toolsSearch recorded evidence and save private review notes with Pro. $99/month plus applicable tax.
lowFirebase Storage bucket reference3 occurrences
Interpretation & review guidance
A Firebase Cloud Storage bucket reference (the default <project>.appspot.com). Storing user files here is normal — it's only an exposure if the Storage security rules allow public read/list, which live verification tests.
- Evidence
- 3 recorded occurrences in the analyzed APK. These are distinct stored findings, not a count of every source match.
- Verification
- Static detection; current reachability is not established.
Evidence preview
- Evidence type
- Static string match
- Representative location
resources.arsc- Recorded match
Pattern recorded; identifying value redacted.- Detector rule
firebase_storage_bucket- Recorded file locations
resources.arsc_split_config.arm64_v8a/lib/arm64-v8a/libapp.so
3 recorded findings have inspectable metadata. Duplicate matches may share a representative location.
Review whether this belongs to intended app functionality or a bundled library. A static match does not establish runtime impact.
Preview evidence and Pro toolsSearch recorded evidence and save private review notes with Pro. $99/month plus applicable tax.
lowGoogle API key (client-shipped; restriction unverified)1 occurrence
Interpretation & review guidance
Android apps are designed to ship Google API keys in the client; Google restricts them by app signing certificate + enabled API. This is only a problem if the key is left unrestricted — presence alone is expected, not an exposure.
- Evidence
- 1 recorded occurrence in the analyzed APK. These are distinct stored findings, not a count of every source match.
- Verification
- Static detection; current reachability is not established.
Evidence preview
- Evidence type
- Static string match
- Representative location
resources.arsc- Recorded match
AIza•••••••• (21–40 chars, redacted)- Detector rule
google_api_key- Recorded file locations
resources.arsc_split_config.arm64_v8a/lib/arm64-v8a/libapp.so
1 recorded findings have inspectable metadata. Duplicate matches may share a representative location.
Review whether this belongs to intended app functionality or a bundled library. A static match does not establish runtime impact.
Preview evidence and Pro toolsSearch recorded evidence and save private review notes with Pro. $99/month plus applicable tax.
No categories match these filters. Clear the search or choose all severities.
Privacy signals
Capabilities and bundled software do not prove that data was collected or transmitted.
Camera Microphone Phone state Storage
Requested permission inventory (47)
Data collection & flow (privacy signal, not part of the grade)
- Persistent-identifier APIs referenced in code (Advertising ID (AAID), Android ID, Device ID / IMEI) with 7 analytics/ad SDK(s) present — the mechanism used for cross-app profiling.
- Camera, Microphone, Phone, Photos & files data requested with third-party analytics/ad SDKs present.
This maps what the app can access (permissions it requests, identifier APIs its code references) to the third parties bundled in it. It reflects capability and SDK presence — not proof that a specific value was transmitted.
Data Safety: declared vs observed (Play label vs our analysis)
We compare the developer's Google Play Data Safety declaration with what the binary can actually do (permissions it requests, identifier APIs and third-party SDKs it ships). A mismatch is a capability signal to confirm — a requested permission is not proof of collection.
Trackers & SDKs (9 detected · privacy signal, not part of the grade)
Build & components
Scanned build 3.9.1. Store metadata may describe a newer release.
660bc193c5db15ab60977dcdb4e31d85d2b75fc79b4fc184ae75e0e274222fe5Signing certificate (who signed this build — factual, not part of the grade)
1a:26:de:8a:78:30:1f:d9:cf:d1:b0:c0:41:3c:10:9b:f4:08:bb:bb:d5:50:b3:21:c6:c0:d6:6b:26:28:76:29The certificate fingerprint identifies the parsed signing certificate. Knowing this public fingerprint does not establish ownership or validate the APK signature.
Component inventory
89 components. Advisory matching covers a curated set; no match is not proof that a component is vulnerability-free.
| Component | Version | Advisory matches |
|---|---|---|
androidx.activity:activity | 1.12.4 | None recorded |
androidx.activity:activity-ktx | 1.12.4 | None recorded |
androidx.annotation:annotation-experimental | 1.5.0 | None recorded |
androidx.appcompat:appcompat | 1.7.1 | None recorded |
androidx.appcompat:appcompat-resources | 1.7.1 | None recorded |
androidx.biometric:biometric | 1.1.0 | None recorded |
androidx.browser:browser | 1.9.0 | None recorded |
androidx.cardview:cardview | 1.0.0 | None recorded |
androidx.compose.runtime:runtime | 1.9.0 | None recorded |
androidx.compose.runtime:runtime-annotation | 1.9.0 | None recorded |
androidx.compose.ui:ui-geometry | 1.1.1 | None recorded |
androidx.compose.ui:ui-graphics | 1.1.1 | None recorded |
androidx.compose.ui:ui-unit | 1.1.1 | None recorded |
androidx.compose.ui:ui-util | 1.1.1 | None recorded |
androidx.coordinatorlayout:coordinatorlayout | 1.1.0 | None recorded |
androidx.core:core | 1.18.0 | None recorded |
androidx.core:core-ktx | 1.18.0 | None recorded |
androidx.core:core-remoteviews | 1.0.0 | None recorded |
androidx.core:core-viewtree | 1.0.0 | None recorded |
androidx.credentials:credentials | 1.5.0 | None recorded |
androidx.credentials:credentials-play-services-auth | 1.5.0 | None recorded |
androidx.cursoradapter:cursoradapter | 1.0.0 | None recorded |
androidx.customview:customview | 1.1.0 | None recorded |
androidx.databinding:viewbinding | 8.9.1 | None recorded |
androidx.datastore:datastore | 1.1.7 | None recorded |
androidx.datastore:datastore-core | 1.1.7 | None recorded |
androidx.datastore:datastore-preferences | 1.1.7 | None recorded |
androidx.datastore:datastore-preferences-core | 1.1.7 | None recorded |
androidx.documentfile:documentfile | 1.0.1 | None recorded |
androidx.drawerlayout:drawerlayout | 1.1.1 | None recorded |
androidx.dynamicanimation:dynamicanimation | 1.1.0 | None recorded |
androidx.emoji2:emoji2 | 1.3.0 | None recorded |
androidx.emoji2:emoji2-views-helper | 1.3.0 | None recorded |
androidx.exifinterface:exifinterface | 1.4.2 | None recorded |
androidx.fragment:fragment | 1.7.1 | None recorded |
androidx.fragment:fragment-ktx | 1.7.1 | None recorded |
androidx.glance:glance | 1.0.0 | None recorded |
androidx.glance:glance-appwidget | 1.0.0 | None recorded |
androidx.graphics:graphics-shapes | 1.0.1 | None recorded |
androidx.heifwriter:heifwriter | 1.0.0 | None recorded |
androidx.interpolator:interpolator | 1.0.0 | None recorded |
androidx.legacy:legacy-support-core-utils | 1.0.0 | None recorded |
androidx.lifecycle:lifecycle-livedata | 2.10.0 | None recorded |
androidx.lifecycle:lifecycle-livedata-core | 2.10.0 | None recorded |
androidx.lifecycle:lifecycle-livedata-core-ktx | 2.10.0 | None recorded |
androidx.lifecycle:lifecycle-process | 2.10.0 | None recorded |
androidx.lifecycle:lifecycle-runtime | 2.10.0 | None recorded |
androidx.lifecycle:lifecycle-runtime-ktx | 2.10.0 | None recorded |
androidx.lifecycle:lifecycle-service | 2.10.0 | None recorded |
androidx.lifecycle:lifecycle-viewmodel | 2.10.0 | None recorded |
androidx.lifecycle:lifecycle-viewmodel-ktx | 2.10.0 | None recorded |
androidx.lifecycle:lifecycle-viewmodel-savedstate | 2.10.0 | None recorded |
androidx.loader:loader | 1.1.0 | None recorded |
androidx.localbroadcastmanager:localbroadcastmanager | 1.1.0 | None recorded |
androidx.media:media | 1.7.1 | None recorded |
androidx.navigationevent:navigationevent | 1.0.2 | None recorded |
androidx.preference:preference | 1.2.1 | None recorded |
androidx.print:print | 1.0.0 | None recorded |
androidx.privacysandbox.ads:ads-adservices | 1.1.0-beta11 | None recorded |
androidx.privacysandbox.ads:ads-adservices-java | 1.1.0-beta11 | None recorded |
androidx.profileinstaller:profileinstaller | 1.4.0 | None recorded |
androidx.recyclerview:recyclerview | 1.2.1 | None recorded |
androidx.room:room-runtime | 2.8.4 | None recorded |
androidx.savedstate:savedstate | 1.4.0 | None recorded |
androidx.savedstate:savedstate-ktx | 1.4.0 | None recorded |
androidx.security:security-crypto | 1.1.0-alpha03 | None recorded |
androidx.slidingpanelayout:slidingpanelayout | 1.2.0 | None recorded |
androidx.sqlite:sqlite | 2.6.2 | None recorded |
androidx.sqlite:sqlite-framework | 2.6.2 | None recorded |
androidx.startup:startup-runtime | 1.1.1 | None recorded |
androidx.swiperefreshlayout:swiperefreshlayout | 1.1.0 | None recorded |
androidx.tracing:tracing | 1.2.0 | None recorded |
androidx.transition:transition | 1.5.0 | None recorded |
androidx.vectordrawable:vectordrawable | 1.1.0 | None recorded |
androidx.vectordrawable:vectordrawable-animated | 1.1.0 | None recorded |
androidx.versionedparcelable:versionedparcelable | 1.1.1 | None recorded |
androidx.viewpager2:viewpager2 | 1.0.0 | None recorded |
androidx.viewpager:viewpager | 1.0.0 | None recorded |
androidx.webkit:webkit | 1.12.0 | None recorded |
androidx.window.extensions.core:core | 1.0.0 | None recorded |
androidx.window:window | 1.2.0 | None recorded |
androidx.window:window-java | 1.2.0 | None recorded |
androidx.work:work-runtime | 2.8.1 | None recorded |
androidx.work:work-runtime-ktx | 2.8.1 | None recorded |
com.google.android.material:material | 1.13.0 | None recorded |
com.squareup.okhttp3:okhttp | 4.12.0 | None recorded |
kotlinx:coroutines_android | 1.9.0 | None recorded |
kotlinx:coroutines_core | 1.9.0 | None recorded |
kotlinx:coroutines_play_services | 1.9.0 | None recorded |
About this app · store information
About this app
Learn & Speak English or Spanish with videos from natives, quizzes and AI tutor.
Screenshots
Scan history
Each row is an observed scan. Gaps between scans do not establish how long a finding existed.
| Scanned (UTC) | Build | Score | Grade |
|---|---|---|---|
| 2026-10-13 00:51 UTC | 3.9.1 | 18 | F |
| 2026-10-06 00:41 UTC | 3.9.1 | 18 | F |
| 2026-09-29 00:39 UTC | 3.9.0 | 18 | F |
| 2026-09-13 11:34 UTC | 3.8.6 | 73 | C |
| 2026-09-06 06:40 UTC | 3.8.5 | 18 | F |
Export & share
Exports describe the recorded assessment. Signed evidence proves origin and integrity, not completeness or safety.
Coverage & gap matrix · Verify signed evidence
Embed the latest grade
Embed this grade
The badge reads the latest recorded grade each time it is loaded, and links back to the full report so a reader can see the build it covers and what the scan could not see.
Grades can move when a new version is scanned or when a detector is corrected. If you would rather publish a grade that cannot change under you, link a signed Proof Capsule instead.
API users can request authenticated, scan-specific exports at /v1/scans/3ea746b8-2a88-4e97-a15e-3bde7572d8c1/findings.sarif (also coverage.json and proof.json).
Request a correction or removal · How to interpret a scan · Browse apps