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Rings: Fitness Tracking Hub

Yuan Yao · Build 2.6.0

com.whyyao.rings
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Static analysis completeScanned 2026-09-30 18:27 UTC

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

Overview

Analysis recorded

3 finding categories to review

Rings: Fitness Tracking Hub (com.whyyao.rings) scored grade A, 98 out of 100, in a static scan of version 2.6.0 on 2026-09-30. It has no high or critical findings, and 3 lower-severity finding categories across 5 occurrences. 6 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 categories35 occurrences
High / critical0Category count
Tracking SDKs6Presence, not observed traffic
Assessment score98 / 100Grade A

Start with these findings

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.
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
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.
Open in all findingsRequest a correction
View all 3 categories

Privacy

34 requested permissions · 0 flagged high-risk classes.

Review privacy signals →

Build & components

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

Inspect build evidence →
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Findings

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

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.en/resources.arsc

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.

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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
  • _split_config.en/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 tools

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

Link to categoryRequest a correction
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 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 permissions34
Flagged high-risk classes0
Detected SDKs6
Requested permission inventory (34)
  • android.permission.ACCESS_ADSERVICES_AD_ID
  • android.permission.ACCESS_ADSERVICES_ATTRIBUTION
  • android.permission.ACCESS_NETWORK_STATE
  • android.permission.FOREGROUND_SERVICE
  • android.permission.INTERNET
  • android.permission.POST_NOTIFICATIONS
  • android.permission.RECEIVE_BOOT_COMPLETED
  • android.permission.VIBRATE
  • android.permission.WAKE_LOCK
  • android.permission.health.READ_ACTIVE_CALORIES_BURNED
  • android.permission.health.READ_DISTANCE
  • android.permission.health.READ_ELEVATION_GAINED
  • android.permission.health.READ_EXERCISE
  • android.permission.health.READ_EXERCISE_ROUTES
  • android.permission.health.READ_FLOORS_CLIMBED
  • android.permission.health.READ_HEALTH_DATA_IN_BACKGROUND
  • android.permission.health.READ_HEART_RATE
  • android.permission.health.READ_MINDFULNESS
  • android.permission.health.READ_POWER
  • android.permission.health.READ_SLEEP
  • android.permission.health.READ_SPEED
  • android.permission.health.READ_STEPS
  • android.permission.health.READ_TOTAL_CALORIES_BURNED
  • android.permission.health.WRITE_ACTIVE_CALORIES_BURNED
  • android.permission.health.WRITE_DISTANCE
  • android.permission.health.WRITE_ELEVATION_GAINED
  • android.permission.health.WRITE_EXERCISE
  • android.permission.health.WRITE_MINDFULNESS
  • android.permission.health.WRITE_TOTAL_CALORIES_BURNED
  • com.android.vending.BILLING
  • com.android.vending.CHECK_LICENSE
  • com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
  • com.google.android.gms.permission.AD_ID
  • com.whyyao.rings.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

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

Data the app can access
No sensitive runtime permissions requested.
Persistent identifiers (referenced in code)
Advertising ID (AAID)Android IDDevice ID / IMEI
Where it can go
Third parties present (4)
Google AdMobGoogle Analytics for FirebaseGoogle Firebase AnalyticsGoogle Tag Manager
  • 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.

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 (6 detected · privacy signal, not part of the grade)

Advertising
Google AdMob
Analytics
Google Analytics for FirebaseGoogle Firebase AnalyticsGoogle Tag Manager
Consent
IAB TCF
Crash reporting
Google Crashlytics

Build & components

Scanned build 2.6.0. Store metadata may describe a newer release.

APK SHA-256180c29b5548792018c59b3839f2d50d6ec8accf0cd5a72542026bdb0a54c59c2

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
2024-03-25 → 2054-03-25
Cert SHA-256
71:ae:60:8d:86:a8:23:5c:9e:72:60:63:43:c7:55:59:3d:3a:37:e5:5c:c0:3d:a5:21:d8:49:24:7c:dd:6d:7d

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

110 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-experimental1.5.1None recorded
androidx.appcompat:appcompat1.7.1None recorded
androidx.appcompat:appcompat-resources1.7.1None recorded
androidx.autofill:autofill1.0.0None recorded
androidx.browser:browser1.10.0None recorded
androidx.compose.animation:animation1.12.0-beta01None recorded
androidx.compose.animation:animation-core1.12.0-beta01None recorded
androidx.compose.foundation:foundation1.12.0-beta01None recorded
androidx.compose.foundation:foundation-layout1.12.0-beta01None recorded
androidx.compose.material3.adaptive:adaptive1.2.0None recorded
androidx.compose.material3.adaptive:adaptive-layout1.2.0None recorded
androidx.compose.material3.adaptive:adaptive-navigation1.2.0None recorded
androidx.compose.material3:material31.5.0-alpha25None recorded
androidx.compose.material3:material3-adaptive-navigation-suite1.5.0-alpha25None recorded
androidx.compose.material3:material3-ripple1.5.0-alpha25None recorded
androidx.compose.material:material-icons-core1.7.8None recorded
androidx.compose.material:material-icons-extended1.7.8None recorded
androidx.compose.material:material-ripple1.12.0-beta01None recorded
androidx.compose.runtime:runtime1.12.0-beta01None recorded
androidx.compose.runtime:runtime-annotation1.12.0-beta01None recorded
androidx.compose.runtime:runtime-retain1.12.0-beta01None recorded
androidx.compose.runtime:runtime-saveable1.12.0-beta01None recorded
androidx.compose.ui:ui1.12.0-beta01None recorded
androidx.compose.ui:ui-geometry1.12.0-beta01None recorded
androidx.compose.ui:ui-graphics1.12.0-beta01None recorded
androidx.compose.ui:ui-text1.12.0-beta01None recorded
androidx.compose.ui:ui-tooling-preview1.12.0-beta01None recorded
androidx.compose.ui:ui-unit1.12.0-beta01None recorded
androidx.compose.ui:ui-util1.12.0-beta01None recorded
androidx.core:core1.19.0None recorded
androidx.core:core-ktx1.19.0None 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:customview1.0.0None recorded
androidx.customview:customview-poolingcontainer1.0.0None recorded
androidx.databinding:viewbinding9.2.1None 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:documentfile1.0.0None recorded
androidx.drawerlayout:drawerlayout1.0.0None recorded
androidx.emoji2:emoji21.4.0None recorded
androidx.emoji2:emoji2-views-helper1.4.0None recorded
androidx.fragment:fragment1.5.4None recorded
androidx.glance:glance1.1.1None recorded
androidx.glance:glance-appwidget1.1.1None recorded
androidx.glance:glance-material31.1.1None recorded
androidx.graphics:graphics-path1.0.1None recorded
androidx.graphics:graphics-shapes1.1.0None recorded
androidx.health.connect:connect-client1.1.0None recorded
androidx.hilt:hilt-lifecycle-viewmodel1.4.0None recorded
androidx.hilt:hilt-lifecycle-viewmodel-compose1.4.0None recorded
androidx.hilt:hilt-work1.4.0None recorded
androidx.interpolator:interpolator1.0.0None recorded
androidx.legacy:legacy-support-core-utils1.0.0None recorded
androidx.lifecycle:lifecycle-livedata2.11.0None recorded
androidx.lifecycle:lifecycle-livedata-core2.11.0None recorded
androidx.lifecycle:lifecycle-livedata-core-ktx2.11.0None recorded
androidx.lifecycle:lifecycle-process2.11.0None recorded
androidx.lifecycle:lifecycle-runtime2.11.0None recorded
androidx.lifecycle:lifecycle-runtime-compose2.11.0None recorded
androidx.lifecycle:lifecycle-runtime-ktx2.11.0None recorded
androidx.lifecycle:lifecycle-service2.11.0None recorded
androidx.lifecycle:lifecycle-viewmodel2.11.0None recorded
androidx.lifecycle:lifecycle-viewmodel-compose2.11.0None recorded
androidx.lifecycle:lifecycle-viewmodel-ktx2.11.0None recorded
androidx.lifecycle:lifecycle-viewmodel-navigation32.11.0None recorded
androidx.lifecycle:lifecycle-viewmodel-savedstate2.11.0None recorded
androidx.loader:loader1.0.0None recorded
androidx.localbroadcastmanager:localbroadcastmanager1.0.0None recorded
androidx.navigation3:navigation3-runtime1.1.5None recorded
androidx.navigation3:navigation3-ui1.1.5None recorded
androidx.navigationevent:navigationevent1.1.2None recorded
androidx.navigationevent:navigationevent-compose1.1.2None 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-ktx2.8.4None recorded
androidx.room:room-runtime2.8.4None recorded
androidx.savedstate:savedstate1.4.0None recorded
androidx.savedstate:savedstate-compose1.4.0None recorded
androidx.savedstate:savedstate-ktx1.4.0None recorded
androidx.sqlite:sqlite2.6.2None recorded
androidx.sqlite:sqlite-framework2.6.2None recorded
androidx.startup:startup-runtime1.2.0None 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.window:window1.5.0None recorded
androidx.window:window-core1.5.0None recorded
androidx.work:work-runtime2.11.2None recorded
androidx.work:work-runtime-ktx2.11.2None recorded
com.google.dagger:dagger2.60.1None recorded
com.google.dagger:dagger-lint-aar2.60.1None recorded
com.google.dagger:hilt-android2.60.1None recorded
com.google.dagger:hilt-core2.60.1None recorded
kotlinx:coroutines_android1.11.0None recorded
kotlinx:coroutines_core1.11.0None recorded
kotlinx:coroutines_guava1.11.0None recorded
kotlinx:coroutines_play_services1.11.0None recorded
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About this app · store information

About this app

Brings all your fitness data together in one hub to track progress and insights

Content ratingEveryone
Download size11.6 MB
Privacy policyPublished →

Screenshots

App 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
2026-09-30 18:27 UTC2.6.098A
2026-09-23 09:35 UTC2.6.097A
2026-09-14 21:12 UTC2.5.197A
2026-09-06 18:06 UTC2.5.197A

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

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apk-scanner.com exposure grade
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