Memorang: Flashcards, Test Pre
Memorang · Build 3.0.47
Static checks identify review items, not a guarantee of safety.
Overview
1 high or critical finding category to review
Memorang: Flashcards, Test Pre (com.memorang) scored grade F, 0 out of 100, in a static scan of version 3.0.47 on 2026-10-11. It has 1 high or critical finding among 8 finding categories across 28 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. 5 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
criticalAmazon S3 bucket reference — confirmed publicly readable20 occurrences
Interpretation & review guidance
A reference to an Amazon S3 bucket. Using cloud storage is normal — the risk exists only if the bucket allows anonymous listing/read, which requires a separate authorized assessment.
- Evidence
- 20 recorded occurrences in the analyzed APK. These are distinct stored findings, not a count of every source match.
- Verification
- 18 historically verified occurrences at the recorded scan time. 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.
lowExported content provider without permission (third-party library artifact, shared across 94 unrelated developers)1 occurrence
Interpretation & review guidance
An exported content provider declares no permission. Other apps on the device may reach it — verify it enforces access control internally; this flags the attack surface, not a confirmed leak.
- 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
52 components recorded. Certificate parsing does not validate APK signature integrity.
Inspect build evidence →Findings
8 categories · 28 occurrences. Severity totals describe categories. Expand a finding for interpretation and review guidance.
criticalAmazon S3 bucket reference — confirmed publicly readable20 occurrences
Interpretation & review guidance
A reference to an Amazon S3 bucket. Using cloud storage is normal — the risk exists only if the bucket allows anonymous listing/read, which requires a separate authorized assessment.
- Evidence
- 20 recorded occurrences in the analyzed APK. These are distinct stored findings, not a count of every source match.
- Verification
- 18 historically verified occurrences at the recorded scan time. Current reachability is not established.
Evidence preview
- Evidence type
- Static string match
- Representative location
assets/index.android.bundle- Recorded match
Pattern recorded; identifying value redacted.- Detector rule
s3_bucket_url- Recorded file locations
assets/index.android.bundle
20 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.
lowExported content provider without permission (third-party library artifact, shared across 94 unrelated developers)1 occurrence
Interpretation & review guidance
An exported content provider declares no permission. Other apps on the device may reach it — verify it enforces access control internally; this flags the attack surface, not a confirmed leak.
- 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:expo.modules.clipboard.ClipboardFileProvider- Recorded match
ClipboardFileProvider (exported, no permission)- Detector rule
manifest- Recorded file locations
AndroidManifest.xml:expo.modules.clipboard.ClipboardFileProvider
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 Realtime Database reference1 occurrence
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
- 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
Pattern recorded; identifying value redacted.- Detector rule
firebase_db- Recorded file locations
resources.arsc
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 reference1 occurrence
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
- 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
Pattern recorded; identifying value redacted.- Detector rule
firebase_storage_bucket- Recorded file locations
resources.arsc
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.
lowGoogle API key (client-shipped; restriction unverified)2 occurrences
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
- 2 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
AIza•••••••• (21–40 chars, redacted)- Detector rule
google_api_key- Recorded file locations
resources.arsc
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.
lowSentry DSN1 occurrence
Interpretation & review guidance
A Sentry DSN. These are client-side by design (embedded in apps to send crash reports), so presence is expected; it only lets someone send events to the project, not read data. Low severity — included for inventory.
- 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/index.android.bundle- Recorded match
Pattern recorded; identifying value redacted.- Detector rule
sentry_dsn- Recorded file locations
assets/index.android.bundle
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.
infoApplication data is backup-enabled1 occurrence
Interpretation & review guidance
The app allows Android backups (android:allowBackup="true"). App data can then be extracted via adb backup on many devices — a concern if the app stores tokens or personal/health/payment data locally. Common and low-severity, but worth disabling for sensitive apps.
- 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:allowBackup="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.
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Privacy signals
Capabilities and bundled software do not prove that data was collected or transmitted.
Camera Microphone Storage Draw over other apps
Requested permission inventory (14)
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 4 analytics/ad SDK(s) present — the mechanism used for cross-app profiling.
- Camera, Microphone, 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 comparison not recorded.
Trackers & SDKs (5 detected · privacy signal, not part of the grade)
Build & components
Scanned build 3.0.47. Store metadata may describe a newer release.
e4264327deef3803aceca1b2663f17caaf6302a5e5da9cc01d4c60f7b0661c86Signing certificate (who signed this build — factual, not part of the grade)
21:ce:33:de:16:bf:d4:77:3d:38:f1:00:98:8e:10:3a:30:b0:84:c3:4d:92:6b:2a:61:4a:51:e6:1c:c1:b4:18The certificate fingerprint identifies the parsed signing certificate. Knowing this public fingerprint does not establish ownership or validate the APK signature.
Component inventory
52 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 | 1.1.0 | None recorded |
androidx.annotation:annotation-experimental | 1.1.0 | None recorded |
androidx.appcompat:appcompat | 1.2.0 | None recorded |
androidx.appcompat:appcompat-resources | 1.2.0 | None recorded |
androidx.arch.core:core-runtime | 2.1.0 | None recorded |
androidx.asynclayoutinflater:asynclayoutinflater | 1.0.0 | None recorded |
androidx.autofill:autofill | 1.1.0 | None recorded |
androidx.browser:browser | 1.2.0 | None recorded |
androidx.cardview:cardview | 1.0.0 | None recorded |
androidx.coordinatorlayout:coordinatorlayout | 1.1.0 | None recorded |
androidx.core:core | 1.6.0 | None recorded |
androidx.core:core-ktx | 1.6.0 | None recorded |
androidx.cursoradapter:cursoradapter | 1.0.0 | None recorded |
androidx.customview:customview | 1.0.0 | None recorded |
androidx.databinding:viewbinding | 7.0.4 | None recorded |
androidx.documentfile:documentfile | 1.0.0 | None recorded |
androidx.drawerlayout:drawerlayout | 1.0.0 | None recorded |
androidx.exifinterface:exifinterface | 1.3.3 | None recorded |
androidx.fragment:fragment | 1.2.1 | None recorded |
androidx.interpolator:interpolator | 1.0.0 | None recorded |
androidx.legacy:legacy-support-core-ui | 1.0.0 | None recorded |
androidx.legacy:legacy-support-core-utils | 1.0.0 | None recorded |
androidx.legacy:legacy-support-v4 | 1.0.0 | None recorded |
androidx.lifecycle:lifecycle-extensions | 2.2.0 | None recorded |
androidx.lifecycle:lifecycle-livedata | 2.2.0 | None recorded |
androidx.lifecycle:lifecycle-livedata-core | 2.2.0 | None recorded |
androidx.lifecycle:lifecycle-process | 2.3.0-rc01 | None recorded |
androidx.lifecycle:lifecycle-runtime | 2.3.0-rc01 | None recorded |
androidx.lifecycle:lifecycle-service | 2.2.0 | None recorded |
androidx.lifecycle:lifecycle-viewmodel | 2.2.0 | None recorded |
androidx.lifecycle:lifecycle-viewmodel-savedstate | 2.2.0 | None recorded |
androidx.loader:loader | 1.0.0 | None recorded |
androidx.localbroadcastmanager:localbroadcastmanager | 1.0.0 | None recorded |
androidx.media:media | 1.0.0 | None recorded |
androidx.print:print | 1.0.0 | None recorded |
androidx.recyclerview:recyclerview | 1.1.0 | None recorded |
androidx.room:room-runtime | 2.4.2 | None recorded |
androidx.savedstate:savedstate | 1.0.0 | None recorded |
androidx.slidingpanelayout:slidingpanelayout | 1.0.0 | None recorded |
androidx.sqlite:sqlite | 2.2.0 | None recorded |
androidx.sqlite:sqlite-framework | 2.2.0 | None recorded |
androidx.swiperefreshlayout:swiperefreshlayout | 1.0.0 | None recorded |
androidx.transition:transition | 1.2.0 | 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 |
com.google.android.material:material | 1.1.0 | None recorded |
com.squareup.okhttp3:okhttp | 4.9.2 | None recorded |
kotlinx:coroutines_android | 1.6.0 | None recorded |
kotlinx:coroutines_core | 1.6.0 | None recorded |
About this app · store information
About this app
Flashcards ⚡ Quizzes ✅ Practice Tests 📝 Automated Study Schedules 📅
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 |
|---|---|---|---|
| 2026-10-11 04:16 UTC | 3.0.47 | 0 | F |
| 2026-10-04 03:50 UTC | 3.0.47 | 0 | F |
| 2026-09-09 19:05 UTC | 3.0.47 | Not graded | Not graded |
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Exports describe the recorded assessment. Signed evidence proves origin and integrity, not completeness or safety.
Coverage & gap matrix · Verify signed evidence
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API users can request authenticated, scan-specific exports at /v1/scans/7623eea4-8e3a-4696-844b-25347d93c02d/findings.sarif (also coverage.json and proof.json).
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