Reviewers like the idea more than the execution. Many say Cirkul helps them drink more water, with adjustable flavor and a few well-liked fruit flavors, especially for replacing soda. But the most common complaints are hard to ignore: cartridges often run out far faster than expected, flavors can taste artificial or inconsistent, and bottles may leak, make loud slurping noises, or be hard to drink from. Customer service, shipping, packaging, and autoship billing draw repeated criticism, leaving many users feeling the system is overpriced and unreliable.
