Browse appsScan report

Mazii: Japanese Kanji Study

Mastering Japanese · Build 3.1.5

com.mazii.kanji
Rescan appExport / share
Limited coverageScanned 2026-10-06 17:09 UTC

Review the recorded findings below. An overall grade is withheld where required checks lack coverage; a new scan may provide additional evidence.

Analysis limitations (1)
  • The amount of extracted text exceeded the analysis limit.

Overview

Limited assessment

3 finding categories to review

Mazii: Japanese Kanji Study (com.mazii.kanji) was scanned at version 3.1.5 on 2026-10-06 but is not graded, because the analysis did not complete enough of its checks for a score to mean anything. The checks that did run recorded 3 finding categories across 4 occurrences; because the analysis did not complete, the absence of anything more severe is not a result. 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 categories34 occurrences
High / critical0Category count
Tracking SDKs8Presence, not observed traffic
Assessment scoreNot gradedNot graded

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
lowFirebase Storage bucket reference2 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
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.
Open in all findingsRequest 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.
Open in all findingsRequest a correction
View all 3 categories

Privacy

22 requested permissions · 3 flagged high-risk classes.

Review privacy signals →

Build & components

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

Inspect build evidence →
Sign in to watchCompare with another app

Findings

3 categories · 4 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.

Preview evidence and Pro tools

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

Link to categoryRequest a correction
lowFirebase Storage bucket reference2 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
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
google/api/endpoint.proto
Recorded match
Pattern recorded; identifying value redacted.
Detector rule
firebase_storage_bucket
Recorded file locations
  • google/api/endpoint.proto

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 tools

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

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
  • _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 tools

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 permissions22
Flagged high-risk classes3
Detected SDKs8

Microphone Phone state Storage

Requested permission inventory (22)
  • android.permission.ACCESS_ADSERVICES_AD_ID
  • android.permission.ACCESS_ADSERVICES_ATTRIBUTION
  • android.permission.ACCESS_ADSERVICES_TOPICS
  • android.permission.ACCESS_NETWORK_STATE
  • android.permission.FOREGROUND_SERVICE
  • android.permission.INTERNET
  • android.permission.POST_NOTIFICATIONS
  • android.permission.READ_EXTERNAL_STORAGE
  • android.permission.READ_PHONE_STATE
  • android.permission.RECEIVE_BOOT_COMPLETED
  • android.permission.RECORD_AUDIO
  • android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS
  • android.permission.SCHEDULE_EXACT_ALARM
  • android.permission.VIBRATE
  • android.permission.WAKE_LOCK
  • android.permission.WRITE_EXTERNAL_STORAGE
  • com.android.vending.BILLING
  • com.android.vending.CHECK_LICENSE
  • com.google.android.c2dm.permission.RECEIVE
  • com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
  • com.google.android.gms.permission.AD_ID
  • com.mazii.kanji.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

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

Data the app can access
Microphone
Microphone
Phone
Phone state / number
Photos & files
Storage (write)Storage
Persistent identifiers (referenced in code)
Advertising ID (AAID)Android IDDevice ID / IMEI
Where it can go
Third parties present (5)
Google AdMobMeta Audience NetworkGoogle Analytics for FirebaseGoogle Firebase AnalyticsGoogle Tag Manager
  • Persistent-identifier APIs referenced in code (Advertising ID (AAID), Android ID, Device ID / IMEI) with 5 analytics/ad SDK(s) present — the mechanism used for cross-app profiling.
  • 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 comparison is not conclusive because analysis coverage is incomplete or unknown.

Trackers & SDKs (8 detected · privacy signal, not part of the grade)

Advertising
Google AdMobMeta Audience Network
Analytics
Google Analytics for FirebaseGoogle Firebase AnalyticsGoogle Tag Manager
Consent
Google UMP (consent)IAB TCF
Crash reporting
Google Crashlytics

Build & components

Scanned build 3.1.5. Store metadata may describe a newer release.

APK SHA-256f6bf35862ff686e14fe48b14931bbca1ccd1d8e1e8108ab8d45f097e48b57b34

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
2025-07-24 → 2055-07-24
Cert SHA-256
bf:69:64:73:da:95:f7:0f:0b:c1:8b:eb:d6:8c:75:81:e3:d2:d5:20:37:19:75:7e:cb:e0:83:4f:8b:23:04:e8

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

69 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.annotation:annotation-experimental1.4.1None recorded
androidx.appcompat:appcompat1.7.1None recorded
androidx.appcompat:appcompat-resources1.7.1None recorded
androidx.browser:browser1.9.0None recorded
androidx.compose.runtime:runtime1.9.0None recorded
androidx.compose.runtime:runtime-annotation1.9.0None recorded
androidx.compose.ui:ui-geometry1.6.8None recorded
androidx.compose.ui:ui-graphics1.6.8None recorded
androidx.compose.ui:ui-unit1.6.8None recorded
androidx.compose.ui:ui-util1.6.8None recorded
androidx.constraintlayout:constraintlayout2.2.1None recorded
androidx.core:core1.18.0None recorded
androidx.core:core-ktx1.18.0None recorded
androidx.core:core-remoteviews1.1.0None recorded
androidx.core:core-viewtree1.0.0None recorded
androidx.cursoradapter:cursoradapter1.0.0None recorded
androidx.customview:customview1.0.0None recorded
androidx.datastore:datastore1.1.7None recorded
androidx.datastore:datastore-core1.1.7None recorded
androidx.datastore:datastore-preferences1.1.7None recorded
androidx.datastore:datastore-preferences-core1.1.7None recorded
androidx.documentfile:documentfile1.0.0None recorded
androidx.drawerlayout:drawerlayout1.0.0None recorded
androidx.emoji2:emoji21.3.0None recorded
androidx.emoji2:emoji2-views-helper1.3.0None recorded
androidx.exifinterface:exifinterface1.4.2None recorded
androidx.fragment:fragment1.7.1None recorded
androidx.glance:glance1.2.0None recorded
androidx.glance:glance-appwidget1.2.0None recorded
androidx.interpolator:interpolator1.0.0None recorded
androidx.legacy:legacy-support-core-utils1.0.0None 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-process2.10.0None recorded
androidx.lifecycle:lifecycle-runtime2.10.0None recorded
androidx.lifecycle:lifecycle-service2.10.0None recorded
androidx.lifecycle:lifecycle-viewmodel2.10.0None recorded
androidx.lifecycle:lifecycle-viewmodel-savedstate2.10.0None recorded
androidx.loader:loader1.1.0None recorded
androidx.localbroadcastmanager:localbroadcastmanager1.1.0None recorded
androidx.media:media1.7.0None recorded
androidx.navigationevent:navigationevent1.0.0None 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:profileinstaller1.4.0None recorded
androidx.room:room-runtime2.7.0None recorded
androidx.savedstate:savedstate1.4.0None recorded
androidx.sqlite:sqlite2.5.0None recorded
androidx.sqlite:sqlite-framework2.5.0None recorded
androidx.startup:startup-runtime1.1.1None recorded
androidx.tracing:tracing1.2.0None recorded
androidx.tracing:tracing-ktx1.2.0None recorded
androidx.vectordrawable:vectordrawable1.1.0None recorded
androidx.vectordrawable:vectordrawable-animated1.1.0None recorded
androidx.versionedparcelable:versionedparcelable1.1.1None recorded
androidx.viewpager:viewpager1.0.0None recorded
androidx.webkit:webkit1.15.0None recorded
androidx.window.extensions.core:core1.0.0None recorded
androidx.window:window1.2.0None recorded
androidx.window:window-java1.2.0None recorded
androidx.work:work-runtime2.11.2None recorded
androidx.work:work-runtime-ktx2.11.2None recorded
com.google.dagger:dagger2.57.2None recorded
kotlinx:coroutines_android1.10.2None recorded
kotlinx:coroutines_core1.10.2None recorded
kotlinx:coroutines_play_services1.10.2None recorded
Export SBOM
About this app · store information

About this app

Study Kanji N5-N1 with flashcards, stroke order, quizzes & handwriting

Content ratingEveryone
Download size94.0 MB
Privacy policyPublished →
Developer sitemazii.net

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
2026-10-06 17:09 UTC3.1.5Not gradedNot graded
2026-09-02 12:06 UTC3.0.992A
2026-09-01 22:17 UTC3.0.992A

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

API users can request authenticated, scan-specific exports at /v1/scans/96b83123-5e45-4d66-a29d-37946808eeda/findings.sarif (also coverage.json and proof.json).

Request a correction or removal · How to interpret a scan · Browse apps