Autodesk no longer provides direct downloads or updates for any version, including 4.1.5, on its main website.
Version 4.1.5 represents a specific "sweet spot" in this evolution. Released before the major UI overhauls and the eventual split from Autodesk, this version is often remembered for its stability and its focused toolset. Users seeking this specific iteration are often looking for a few key attributes that have become rare in modern apps.
Includes 1-point, 2-point, 3-point, and fisheye perspective tools, critical for environmental design and architectural sketching.
From a software integrity standpoint, the version hosted on APKMirror is considered safe. APKMirror verifies that the APKs they host are signed with the original developer's key and are not altered. This minimizes the risk of malware.
Software updates usually bring exciting new features, but they can also introduce system bloat, change beloved user interfaces, or drop support for older operating systems. Version 4.1.5 represents a "sweet spot" in Sketchbook's history for several distinct reasons: 1. Legacy Hardware Compatibility
Assuming you found a safe SketchBookPro_4.1.5_64bit.exe :
Navigate to your device Settings > Security (or Apps on newer Android versions) and toggle on "Install Unknown Apps" for your mobile browser.