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Knowt: AI Flashcards & Notes

Knowt · Build 4.0.0

com.knowt.app
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Static analysis completeScanned 2026-10-13 06:20 UTC

Static checks identify review items, not a guarantee of safety.

Overview

Analysis recorded

5 finding categories to review

Knowt: AI Flashcards & Notes (com.knowt.app) scored grade A, 90 out of 100, in a static scan of version 4.0.0 on 2026-10-13. It has no high or critical findings, and 5 lower-severity finding categories across 9 occurrences. 8 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.

Finding categories59 occurrences
High / critical0Category count
Tracking SDKs8Presence, not observed traffic
Assessment score90 / 100Grade A

Start with these findings

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.
Open in all findingsRequest a correction
lowAmazon S3 bucket reference5 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
5 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.
Open in all findingsRequest a correction
lowExported content provider without permission (third-party library artifact, shared across 11 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.
Open in all findingsRequest a correction
View all 5 categories

Privacy

41 requested permissions · 4 flagged high-risk classes.

Review privacy signals →

Build & components

122 components recorded. Certificate parsing does not validate APK signature integrity.

Inspect build evidence →
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Findings

5 categories · 9 occurrences. Severity totals describe categories. Expand a finding for interpretation and review guidance.

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.

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Link to categoryRequest a correction
lowAmazon S3 bucket reference5 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
5 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
assets/index.android.bundle
Recorded match
Pattern recorded; identifying value redacted.
Detector rule
s3_bucket_url
Recorded file locations
  • assets/index.android.bundle

5 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.

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Search recorded evidence and save private review notes with Pro. $99/month plus applicable tax.

Link to categoryRequest a correction
lowExported content provider without permission (third-party library artifact, shared across 11 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:m.reactnativeandroidwidget.RNWidgetImageProvider
Recorded match
RNWidgetImageProvider (exported, no permission)
Detector rule
manifest
Recorded file locations
  • AndroidManifest.xml:m.reactnativeandroidwidget.RNWidgetImageProvider

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.

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Link to categoryRequest a correction
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

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.

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Link to categoryRequest a correction
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.

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Search recorded evidence and save private review notes with Pro. $99/month plus applicable tax.

Link to categoryRequest a correction

Privacy signals

Capabilities and bundled software do not prove that data was collected or transmitted.

Requested permissions41
Flagged high-risk classes4
Detected SDKs8

Camera Microphone Contacts Draw over other apps

Requested permission inventory (41)
  • android.permission.ACCESS_ADSERVICES_AD_ID
  • android.permission.ACCESS_ADSERVICES_ATTRIBUTION
  • android.permission.ACCESS_NETWORK_STATE
  • android.permission.ACCESS_WIFI_STATE
  • android.permission.CAMERA
  • android.permission.FOREGROUND_SERVICE
  • android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK
  • android.permission.FOREGROUND_SERVICE_MICROPHONE
  • android.permission.INTERNET
  • android.permission.MODIFY_AUDIO_SETTINGS
  • android.permission.POST_NOTIFICATIONS
  • android.permission.READ_APP_BADGE
  • android.permission.READ_CONTACTS
  • android.permission.RECEIVE_BOOT_COMPLETED
  • android.permission.RECORD_AUDIO
  • android.permission.SYSTEM_ALERT_WINDOW
  • android.permission.USE_BIOMETRIC
  • android.permission.USE_FINGERPRINT
  • android.permission.VIBRATE
  • android.permission.WAKE_LOCK
  • android.permission.WRITE_EXTERNAL_STORAGE
  • com.anddoes.launcher.permission.UPDATE_COUNT
  • com.android.vending.BILLING
  • com.google.android.c2dm.permission.RECEIVE
  • com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
  • com.google.android.gms.permission.AD_ID
  • com.htc.launcher.permission.READ_SETTINGS
  • com.htc.launcher.permission.UPDATE_SHORTCUT
  • com.huawei.android.launcher.permission.CHANGE_BADGE
  • com.huawei.android.launcher.permission.READ_SETTINGS
  • com.huawei.android.launcher.permission.WRITE_SETTINGS
  • com.knowt.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
  • com.majeur.launcher.permission.UPDATE_BADGE
  • com.oppo.launcher.permission.READ_SETTINGS
  • com.oppo.launcher.permission.WRITE_SETTINGS
  • com.sec.android.provider.badge.permission.READ
  • com.sec.android.provider.badge.permission.WRITE
  • com.sonyericsson.home.permission.BROADCAST_BADGE
  • com.sonymobile.home.permission.PROVIDER_INSERT_BADGE
  • me.everything.badger.permission.BADGE_COUNT_READ
  • me.everything.badger.permission.BADGE_COUNT_WRITE

Data collection & flow (privacy signal, not part of the grade)

Data the app can access
Camera
Camera
Contacts
Contacts
Microphone
Microphone
Photos & files
StorageStorage (write)
Persistent identifiers (referenced in code)
Advertising ID (AAID)Android IDDevice ID / IMEIHardware MAC address
Where it can go
Third parties present (6)
Google AdMobGoogle Analytics for FirebaseGoogle Firebase AnalyticsGoogle Tag ManagerMixpanelAdjust
  • Persistent-identifier APIs referenced in code (Advertising ID (AAID), Android ID, Device ID / IMEI +1 more) with 6 analytics/ad SDK(s) present — the mechanism used for cross-app profiling.
  • Camera, Contacts, 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 (8 detected · privacy signal, not part of the grade)

Advertising
Google AdMob
Analytics
Google Analytics for FirebaseGoogle Firebase AnalyticsGoogle Tag ManagerMixpanel
Attribution
Adjust
Consent
IAB TCF
Crash reporting
Sentry

Build & components

Scanned build 4.0.0. Store metadata may describe a newer release.

APK SHA-25601a6245d607ab01baaa53c691dba0dc961394dcdda61370510e9e8b579145f88

Signing certificate (who signed this build — factual, not part of the grade)

Signer
Google Inc. self-signed
Scheme
V3V2
Key
RSA 4096-bit
Algorithm
sha256WithRSA
Validity
2023-08-29 → 2053-08-29
Cert SHA-256
56:af:b4:2a:5c:46:fa:60:67:f8:d3:19:b3:58:7d:4e:f4:6b:b6:b4:48:a2:05:ab:55:2f:53:ce:fe:64:18:2e

The certificate fingerprint identifies the parsed signing certificate. Knowing this public fingerprint does not establish ownership or validate the APK signature.

Signature integrity: not established by certificate parsing.

Component inventory

122 components. Advisory matching covers a curated set; no match is not proof that a component is vulnerability-free.

Bundled components and recorded advisory matches
ComponentVersionAdvisory matches
androidx.activity:activity1.13.0None recorded
androidx.activity:activity-compose1.13.0None recorded
androidx.activity:activity-ktx1.13.0None recorded
androidx.annotation:annotation-experimental1.4.1None recorded
androidx.appcompat:appcompat1.7.1None recorded
androidx.appcompat:appcompat-resources1.7.1None recorded
androidx.autofill:autofill1.3.0None recorded
androidx.biometric:biometric1.1.0None recorded
androidx.browser:browser1.8.0None recorded
androidx.camera:camera-camera21.5.0-alpha03None recorded
androidx.camera:camera-core1.5.0-alpha03None recorded
androidx.camera:camera-extensions1.5.0-alpha03None recorded
androidx.camera:camera-lifecycle1.5.0-alpha03None recorded
androidx.camera:camera-video1.5.0-alpha03None recorded
androidx.camera:camera-view1.5.0-alpha03None recorded
androidx.cardview:cardview1.0.0None recorded
androidx.compose.animation:animation1.11.3None recorded
androidx.compose.animation:animation-core1.11.3None recorded
androidx.compose.foundation:foundation1.11.3None recorded
androidx.compose.foundation:foundation-layout1.11.3None recorded
androidx.compose.material3:material31.5.0-alpha17None recorded
androidx.compose.material:material-ripple1.11.3None recorded
androidx.compose.runtime:runtime1.11.3None recorded
androidx.compose.runtime:runtime-annotation1.11.3None recorded
androidx.compose.runtime:runtime-retain1.11.3None recorded
androidx.compose.runtime:runtime-saveable1.11.3None recorded
androidx.compose.ui:ui1.11.3None recorded
androidx.compose.ui:ui-geometry1.11.3None recorded
androidx.compose.ui:ui-graphics1.11.3None recorded
androidx.compose.ui:ui-text1.11.3None recorded
androidx.compose.ui:ui-tooling-preview1.11.3None recorded
androidx.compose.ui:ui-unit1.11.3None recorded
androidx.compose.ui:ui-util1.11.3None recorded
androidx.constraintlayout:constraintlayout2.2.1None recorded
androidx.coordinatorlayout:coordinatorlayout1.2.0None recorded
androidx.core:core1.18.0None recorded
androidx.core:core-ktx1.18.0None recorded
androidx.core:core-remoteviews1.1.0None recorded
androidx.core:core-splashscreen1.2.0None recorded
androidx.core:core-viewtree1.0.0None recorded
androidx.cursoradapter:cursoradapter1.0.0None recorded
androidx.customview:customview1.1.0None recorded
androidx.customview:customview-poolingcontainer1.0.0None recorded
androidx.databinding:viewbinding8.12.0None recorded
androidx.datastore:datastore1.2.1None recorded
androidx.datastore:datastore-core1.2.1None recorded
androidx.datastore:datastore-preferences1.2.1None recorded
androidx.datastore:datastore-preferences-core1.2.1None recorded
androidx.documentfile:documentfile1.1.0None recorded
androidx.drawerlayout:drawerlayout1.1.1None recorded
androidx.dynamicanimation:dynamicanimation1.1.0None recorded
androidx.dynamicanimation:dynamicanimation-ktx1.1.0None recorded
androidx.emoji2:emoji21.4.0None recorded
androidx.emoji2:emoji2-views-helper1.4.0None recorded
androidx.exifinterface:exifinterface1.4.2None recorded
androidx.fragment:fragment1.8.9None recorded
androidx.fragment:fragment-ktx1.8.9None recorded
androidx.glance:glance1.2.0-rc01None recorded
androidx.glance:glance-appwidget1.2.0-rc01None recorded
androidx.graphics:graphics-path1.0.1None recorded
androidx.graphics:graphics-shapes1.1.0None recorded
androidx.interpolator:interpolator1.0.0None recorded
androidx.legacy:legacy-support-core-utils1.0.0None recorded
androidx.lifecycle:lifecycle-extensions2.2.0None recorded
androidx.lifecycle:lifecycle-livedata2.10.0None recorded
androidx.lifecycle:lifecycle-livedata-core2.10.0None recorded
androidx.lifecycle:lifecycle-livedata-core-ktx2.10.0None recorded
androidx.lifecycle:lifecycle-livedata-ktx2.10.0None recorded
androidx.lifecycle:lifecycle-process2.10.0None recorded
androidx.lifecycle:lifecycle-runtime2.10.0None recorded
androidx.lifecycle:lifecycle-runtime-compose2.10.0None recorded
androidx.lifecycle:lifecycle-runtime-ktx2.10.0None recorded
androidx.lifecycle:lifecycle-service2.10.0None recorded
androidx.lifecycle:lifecycle-viewmodel2.10.0None recorded
androidx.lifecycle:lifecycle-viewmodel-compose2.10.0None recorded
androidx.lifecycle:lifecycle-viewmodel-ktx2.10.0None recorded
androidx.lifecycle:lifecycle-viewmodel-savedstate2.10.0None recorded
androidx.loader:loader1.1.0None recorded
androidx.localbroadcastmanager:localbroadcastmanager1.0.0None recorded
androidx.media:media1.7.0None recorded
androidx.navigation:navigation-common2.9.8None recorded
androidx.navigation:navigation-compose2.9.8None recorded
androidx.navigation:navigation-runtime2.9.8None recorded
androidx.navigationevent:navigationevent1.0.0None recorded
androidx.navigationevent:navigationevent-compose1.0.0None recorded
androidx.paging:paging-common3.4.1None recorded
androidx.paging:paging-compose3.4.1None recorded
androidx.paging:paging-runtime3.4.1None recorded
androidx.paging:paging-runtime-ktx3.4.1None recorded
androidx.print:print1.0.0None recorded
androidx.privacysandbox.ads:ads-adservices1.1.0-beta11None recorded
androidx.privacysandbox.ads:ads-adservices-java1.1.0-beta11None recorded
androidx.profileinstaller:profileinstaller1.4.1None recorded
androidx.recyclerview:recyclerview1.3.2None recorded
androidx.room:room-ktx2.6.1None recorded
androidx.room:room-runtime2.6.1None recorded
androidx.savedstate:savedstate1.4.0None recorded
androidx.savedstate:savedstate-compose1.4.0None recorded
androidx.savedstate:savedstate-ktx1.4.0None recorded
androidx.sqlite:sqlite2.4.0None recorded
androidx.sqlite:sqlite-framework2.4.0None recorded
androidx.startup:startup-runtime1.1.1None recorded
androidx.swiperefreshlayout:swiperefreshlayout1.1.0None recorded
androidx.tracing:tracing1.2.0None recorded
androidx.tracing:tracing-ktx1.2.0None recorded
androidx.transition:transition1.7.0None recorded
androidx.transition:transition-ktx1.7.0None recorded
androidx.vectordrawable:vectordrawable1.1.0None recorded
androidx.vectordrawable:vectordrawable-animated1.1.0None recorded
androidx.versionedparcelable:versionedparcelable1.1.1None recorded
androidx.viewpager2:viewpager21.1.0-beta02None recorded
androidx.viewpager:viewpager1.0.0None recorded
androidx.webkit:webkit1.14.0None recorded
androidx.window:window1.5.1None recorded
androidx.window:window-core1.5.1None recorded
androidx.work:work-runtime2.8.1None recorded
androidx.work:work-runtime-ktx2.8.1None recorded
com.google.android.material:material1.14.0-alpha05None recorded
com.squareup.okhttp3:okhttp4.12.0None recorded
kotlinx:coroutines_android1.10.2None recorded
kotlinx:coroutines_core1.10.2None recorded
kotlinx:coroutines_play_services1.10.2None recorded
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About this app · store information

About this app

Snap & Solve Questions, AI Summarizers, and Live Lecture Note Taker

Content ratingEveryone 10+
Download size194.8 MB
Privacy policyPublished →
Developer siteknowt.com

Screenshots

App screenshotApp screenshotApp screenshotApp screenshotApp screenshotApp screenshotApp screenshotApp screenshot

Scan history

Each row is an observed scan. Gaps between scans do not establish how long a finding existed.

Scanned (UTC)BuildScoreGrade
2026-10-13 06:20 UTC4.0.090A
2026-10-06 05:49 UTC3.25.035D
2026-09-29 05:49 UTC3.25.035D
2026-09-13 23:45 UTC3.22.084B
2026-09-06 15:35 UTC3.22.084B

View changes between the last two scans →

Export & share

Exports describe the recorded assessment. Signed evidence proves origin and integrity, not completeness or safety.

SARIFFindings CSVCoverage JSONSigned evidenceSBOM

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.

apk-scanner.com exposure grade
Markdown
[![apk-scanner.com exposure grade](https://apk-scanner.com/app/com.knowt.app/badge.svg)](https://apk-scanner.com/app/com.knowt.app)
HTML
<a href="https://apk-scanner.com/app/com.knowt.app"><img src="https://apk-scanner.com/app/com.knowt.app/badge.svg" alt="apk-scanner.com exposure grade" height="20"></a>

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API users can request authenticated, scan-specific exports at /v1/scans/b5d6e9a4-fd08-40ef-9f7b-bec33e49890d/findings.sarif (also coverage.json and proof.json).

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