abundance calculator choose a group, and drag the slider to calculate how many peoplefigures are rough 2025 estimates affinity groupEntire World (8 B)Crypto users (560 M)Bitcoin holders (100 M)Yoga practitioners (300 M)Vegans (79 M)US digital nomads (18 M)CrossFit athletes (5 M)Chess.com users (150 M)Ham‑radio operators (3 M)US podcast listeners (200 M)Steam gamers (120 M)Left‑handed (708 M)PS5 owners (55 M)Specialty‑coffee fans (400 M)Anime fans (150 M)Marathon finishers (1.2 M)NaNoWriMo writers (0.5 M)EV owners (40 M)Hard‑sci‑fi readers (10 M)Adults w/ ADHD (140 M)Custom…Custom group size audience slice (%) 0.1% —