: Go to Settings > Security and toggle on "Install from Unknown Sources."

If you found it while searching for a specific app feature (e.g., motion tracking, video effects), reply with what functionality you need, and I will recommend a legitimate, safe app from the Google Play Store instead.

: Specialized tools for "twixtor" or slow-motion effects used in AMVs (Anime Music Videos).

The suffix " -1-" in the file name is intriguing. It could indicate that this is a modified or patched version of the app, or perhaps it's a build number. The presence of this string may imply that the app has undergone some changes or customizations.

. It is frequently used by creators for cinematic video editing, keyframe animation, and advanced visual effects. Google Play Key Features of After Motion ZR Motion Graphics