Samyak Tap means the right or proper austerity (tapas) practiced with discipline and the correct spiritual intention. In Jainism, tapas refers to self-restraint, penance, and voluntary hardship undertaken to purify the soul. When qualified by samyak, it emphasizes:

• Doing austerities in a balanced, sincere way—not excessive or harmful, but with steady effort.
• Aligning the penance with purification of conduct, intention, and knowledge (and ultimately liberation).
• Practicing appropriate forms of austerity according to one’s mode of life (monastic or lay), without violating nonviolence (ahimsa) or other Jain vows.

In short, samyak tap is the “right” discipline of penance that leads toward spiritual progress. Differences between Digambar and Shwetambar traditions may appear in specific practices or how they classify austerities, but the core idea—austerity done with proper understanding and intent—remains the same.