If they email you the .app, it will be locked down to the purchaser's machine. In terms of Snow Leopard-only, that's not necessarily true. However, it will be

If they email you the .app, it will be locked down to the purchaser's machine. In terms of Snow Leopard-only, that's not necessarily true. However, it will be Intel-only. The version of TapeDeck I submitted to the App Store had to be stripped of the ppc binary in order to pass validation. However, the version on http://tapedeckapp.com http://tapedeckapp.com (the demo) is ppc/intel and 10.5-friendly.