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Ukulele Tuner - LikeTones

LikeTones · Build 26.2.6

com.sonkins.tukulele
Static analysis completeScanned 2026-10-13 08:05 UTC

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

Overview

Review needed

1 high or critical finding category to review

Ukulele Tuner - LikeTones (com.sonkins.tukulele) scored grade D, 43 out of 100, in a static scan of version 26.2.6 on 2026-10-13. It has 1 high or critical finding among 2 finding categories across 4 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. 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 categories24 occurrences
High / critical1Category count
Tracking SDKs6Presence, not observed traffic
Assessment score43 / 100Grade D

Start with these findings

criticalFirebase Storage bucket reference — confirmed publicly readable3 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
1 historically verified occurrence at the recorded scan time. Current reachability is not established.
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.
View all 2 categories

Privacy

10 requested permissions · 1 flagged high-risk classes.

Review privacy signals →

Build & components

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

Inspect build evidence →

Findings

2 categories · 4 occurrences. Severity totals describe categories. Expand a finding for interpretation and review guidance.

criticalFirebase Storage bucket reference — confirmed publicly readable3 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
1 historically verified occurrence at the recorded scan time. 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.

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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.

Privacy signals

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

Requested permissions10
Flagged high-risk classes1
Detected SDKs6

Microphone

Requested permission inventory (10)
  • android.permission.ACCESS_ADSERVICES_AD_ID
  • android.permission.ACCESS_ADSERVICES_ATTRIBUTION
  • android.permission.ACCESS_NETWORK_STATE
  • android.permission.INTERNET
  • android.permission.MODIFY_AUDIO_SETTINGS
  • android.permission.RECORD_AUDIO
  • android.permission.WAKE_LOCK
  • com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
  • com.google.android.gms.permission.AD_ID
  • com.sonkins.tukulele.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

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

Data the app can access
Microphone
Microphone
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.
  • Microphone 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 (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 26.2.6. Store metadata may describe a newer release.

APK SHA-256e59979d650d2b1434bd222455dfb570ef3c25011b7642b44ca14aabbc4d3963e

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
2023-06-19 → 2053-06-19
Cert SHA-256
fa:76:1d:e2:43:37:92:01:94:7f:3a:50:17:b9:2c:2c:75:1c:bf:3d:9f:7a:87:05:a0:57:02:51:ec:20:34:df

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

62 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:activity1.9.0None recorded
androidx.activity:activity-ktx1.9.0None recorded
androidx.annotation:annotation-experimental1.4.1None recorded
androidx.appcompat:appcompat1.7.1None recorded
androidx.appcompat:appcompat-resources1.7.1None recorded
androidx.asynclayoutinflater:asynclayoutinflater1.0.0None recorded
androidx.browser:browser1.9.0None recorded
androidx.coordinatorlayout:coordinatorlayout1.0.0None recorded
androidx.core:core1.17.0None recorded
androidx.core:core-ktx1.17.0None recorded
androidx.core:core-viewtree1.0.0None recorded
androidx.cursoradapter:cursoradapter1.0.0None recorded
androidx.customview:customview1.1.0None 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:exifinterface1.4.1None recorded
androidx.fragment:fragment1.7.1None recorded
androidx.fragment:fragment-ktx1.7.1None recorded
androidx.interpolator:interpolator1.0.0None recorded
androidx.legacy:legacy-support-core-ui1.0.0None recorded
androidx.legacy:legacy-support-core-utils1.0.0None recorded
androidx.lifecycle:lifecycle-livedata2.7.0None recorded
androidx.lifecycle:lifecycle-livedata-core2.7.0None recorded
androidx.lifecycle:lifecycle-livedata-core-ktx2.7.0None recorded
androidx.lifecycle:lifecycle-process2.7.0None recorded
androidx.lifecycle:lifecycle-runtime2.7.0None recorded
androidx.lifecycle:lifecycle-runtime-ktx2.7.0None recorded
androidx.lifecycle:lifecycle-viewmodel2.7.0None recorded
androidx.lifecycle:lifecycle-viewmodel-ktx2.7.0None recorded
androidx.lifecycle:lifecycle-viewmodel-savedstate2.7.0None recorded
androidx.loader:loader1.0.0None recorded
androidx.localbroadcastmanager:localbroadcastmanager1.0.0None recorded
androidx.preference:preference1.2.1None 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:profileinstaller1.3.1None recorded
androidx.recyclerview:recyclerview1.0.0None recorded
androidx.savedstate:savedstate1.2.1None recorded
androidx.savedstate:savedstate-ktx1.2.1None recorded
androidx.slidingpanelayout:slidingpanelayout1.2.0None recorded
androidx.startup:startup-runtime1.1.1None recorded
androidx.swiperefreshlayout:swiperefreshlayout1.0.0None recorded
androidx.tracing:tracing1.2.0None recorded
androidx.transition:transition1.4.1None 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.extensions.core:core1.0.0None recorded
androidx.window:window1.2.0None recorded
androidx.window:window-java1.2.0None recorded
com.google.dagger:dagger2.51None recorded
kotlinx:coroutines_android1.9.0None recorded
kotlinx:coroutines_core1.9.0None recorded
kotlinx:coroutines_play_services1.9.0None recorded
Export SBOM
About this app · store information

About this app

Tune ukulele with a professional ukulele tuner. Easy ukulele tuning.

Content ratingEveryone
Download size23.4 MB
Privacy policyPublished →
Developer siteliketones.com

Screenshots

App 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 08:05 UTC26.2.643D
2026-10-06 07:24 UTC26.2.643D
2026-09-29 07:23 UTC26.2.643D
2026-09-13 09:44 UTC26.2.692A
2026-09-05 20:17 UTC26.2.637D

View changes between the last two scans →

Export & share

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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Embed this grade

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apk-scanner.com exposure grade
Markdown
[![apk-scanner.com exposure grade](https://apk-scanner.com/app/com.sonkins.tukulele/badge.svg)](https://apk-scanner.com/app/com.sonkins.tukulele)
HTML
<a href="https://apk-scanner.com/app/com.sonkins.tukulele"><img src="https://apk-scanner.com/app/com.sonkins.tukulele/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/b18e362e-8d10-448f-abeb-69e753ed5c50/findings.sarif (also coverage.json and proof.json).

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