You can find Cross DJ Pro on Google Play for a one-time purchase with no ads and all future updates included.

Access over 70 one-shot samples and 12 loops, or use the XY effects pad to shape your sound with pro-grade FX.

For specific builds like 2122010401, reliable repositories like Uptodown often host older or specific versions of APKs. Cross DJ Pro - Mix & Remix - Apps on Google Play

Features like Auto-sync and Auto-gain handle the technical side so you can focus on the performance.