CITT

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    Puzzle (ad free)

    Android

    Puzzle (ad free) is a simple offline puzzle game that allows users to create puzzle pieces from bundled images or photos from their gallery. Developed by Stefan Oltmann, this game requires no internet connection and respects user privacy.

    CITT SCORE
    100
    out of 100
    TRUSTED

    Quick Verdict

    Best for: Puzzle fans wanting offline play without ads

    What It Means For You

    Puzzle activity stays entirely on the device and is never transmitted anywhere. No advertising networks, analytics services, or third-party data recipients are connected to this app. Gameplay and progress remain local to the phone.

    Method and Limitations

    Static analysis only. CITT reviewed the code of this build without running the app, so runtime behavior was not observed. The findings below describe the analyzed build and may not reflect server-side controls or later versions. CITT makes no determination about compliance with any law or platform policy; it reports what the artifacts contain and cites the published guidance so a reader can compare.

    How CITT scores an app

    Findings (4)

    Data Security

    2 total
    1 Low
    1 Info

    Network Security

    1 total
    1 Info

    Privacy

    1 total
    1 Info

    Security Strengths

    • ✓Zero network connectivity - completely offline operation
    • ✓Stateless architecture with no data persistence
    • ✓No analytics, advertising, or tracking SDKs
    • ✓Minimal permissions (only READ_EXTERNAL_STORAGE for gallery)
    • ✓No API keys, tokens, or credentials embedded
    • ✓GDPR/CCPA compliant by design (zero data collection)
    What changed since the last scan

    Version diff is on the Developer plan. See developer plans.

    Context Tags

    offline
    privacy friendly
    no tracking

    Package

    de.stefan_oltmann.puzzleapp

    Version

    0.4 (versionCode: 4)

    Analysis Date

    Mar 5, 2026

    Classes Analyzed

    695

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    View on Play Store

    Recommendation: Very Secure

    Key Findings

    Data Security - 2 findings (1 low, 1 info)

    Network Security - 1 finding (1 info)

    Code Safety - 0 findings

    Privacy - 1 finding (1 info)

    Privacy Concerns

    What Data is Collected

    No personal data is collected. The app operates entirely offline and stores puzzle progress locally on the device only.

    Third-Party Data Sharing

    No third-party services were identified. User data is not shared with any external companies, advertisers, or analytics providers.

    Understanding the Scores

    CategoryScore
    Security99/100
    Privacy100/100
    Data Security99/100
    Network Security100/100
    Code Safety100/100
    Data Collection100/100
    Data Sharing100/100
    User Control100/100

    Positive Security Features

    • All puzzle data and progress are kept entirely on the device with nothing sent externally.
    • No advertising or analytics networks are embedded in the app.
    • No personal information is collected or shared with any third party.

    Areas for Improvement

    • A few minor code-level hardening measures could further strengthen the app's resistance to tampering, though these pose no practical risk in everyday use.
    • Some network configuration settings could be refined slightly as a best-practice measure, representing no real concern for users.

    About This Analysis

    This scorecard is based on automated static analysis of the app's code and configuration. Scores reflect security and privacy practices observed at the time of the scan.

    App Details

    • App Name: Puzzle (ad free)
    • Package ID: de.stefan_oltmann.puzzleapp
    • Version: 0.4 (build 4)
    • Scan Date: March 5, 2026
    • Analysis Method: Static code analysis

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