Yes, and that's not really something you'd need in a home darkroom.
An alternative to the 'official' final rinse for a C41 would be a combination of:
1 A dye coupler stabilizer (but this is optional/unnecessary for modern films).
2 A surfactant to reduce the risk of drying spots.
3 An antifungal/antibacterial compound to prevent biological damage to the film later on.
There are many ways to skin these three cats. A simple solution that will work well in a low-volume environment (e.g. home darkroom) is to use demineralized water, add some photoflo (according to the mfgr's instructions) and a few drops of formalin solution. The demi water + photoflo address #2, while the formalin addresses #1 and #3. If you can find something that will address #3 only (and isn't nastier than formalin and doesn't leave residue on the film), you'd be good for modern (post ca. 2000) films, too.