Character.AI — best overall
Character.AI is the closest like-for-like replacement for PolyBuzz: a free, ad-supported character chat app on web, iOS and Android, with a library its sign-up page puts at more than 10 million characters. You can chat by text or live voice call and build characters with their own personality, backstory and voice. Unlike Nomi, Kindroid or Replika, which center on a companion you create, Character.AI is a catalogue first.
Where PolyBuzz publishes no prices, Character.AI's are visible before you sign up. The App Store lists c.ai+ at $9.99/mo or $94.99/yr, a Lite tier at $4.99 and $2.49 with no stated billing period, and Charms currency packs from $0.99 to $49.99. Character.AI's own pricing page could not be opened, so these are App Store prices as of November 2026. Free use carries advertising, and its limits are unpublished.
Apple rates the app 17+ with content restrictions, Age Assurance and Parental Controls, where PolyBuzz's terms set the bar at 18. Its 4.3 from 561K US ratings is the largest App Store count here. If Character.AI itself is what you are leaving, see our Character AI alternatives.
One risk to weigh: Character Technologies filed for Chapter 11 on 12 October 2026 to run a court-supervised sale. As of November 2026 the app is online and subscriptions remain active; bids are due 24 November and the sale hearing is set for 3–4 December, so prefer a monthly plan over an annual one until the outcome is known.
- Library of 10M+ characters, per its sign-up page
- Live voice calls, not only text
- Apps on web, iOS and Android
- c.ai+ price visible on the App Store before you pay
- Ads on the free tier, with unpublished limits
- Charms currency packs ($0.99 to $49.99) alongside subscriptions
- In Chapter 11 since 12 October 2026; a sale hearing is set for 3–4 December
Choose Character.AI if you want the biggest library and voice calls, and can live with ads on the free tier.