Freezer is a macro for 3ds Max from developer Chuggnut. It began as a tool called freeze anim, and this version re-writes that tool as a macro. Freezer handles the freezing of animation, and this release adds support for freezing space warp effects.
When freezing a bomb effect specifically, the freeze should start on the frame of detonation. Because a bomb effect introduces a dynamic change in topology, beginning the freeze on that frame is what lets the macro handle it correctly.
Freezer is listed here at version 2.3.5 and appears in this catalog as a free download. The developer's page at chuggnut.com is the place to check for the latest details on the macro and any current licensing terms directly from Chuggnut.