Can a single woman be a swinger, or do you need a partner?
You don't need a partner to identify as a swinger or to participate in the lifestyle. Swinging is most visible as a couples' activity because couples are the majority, but single women attend the same events, and at launch will hold independent JoinTheSwing membership.
The word swinger conjures a couple for most people, and historically the community's on-ramps — house parties, club nights, referral networks — were built around couples finding other couples. That history doesn't define who is allowed to participate now.
A single woman can be a swinger in exactly the same sense a single person can be part of any social or dating community: by participating on her own account, under her own name, making her own decisions about who she meets and what she's open to. She isn't required to be paired with anyone, temporarily or otherwise, to belong.
In practice, single women in the lifestyle pursue a range of things — connecting with couples, meeting other single women, attending social events without any expectation of pairing off, or simply being part of a community that doesn't require monogamy to be explained or justified.
At launch, single membership on JoinTheSwing will be a first-class account type, not a workaround: your own verification, your own profile, your own privacy settings, and your own decisions about every introduction that comes your way.