| Price from | $8.25/mo | $19/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | — | Yes |
| macOS | Yes | — |
| iOS | Yes | — |
| Plans published | 3 | 1 |
| Spec score · AI Companion Apps | 8.2 (#10) | 7.5 (#27) |
| Integrations | The Agent Presentation Protocol connects agents that can send JSON to presentation surfaces, and the maker says any framework that speaks APP can drive Chitin surfaces. | The privacy policy says Persa uses OpenAI’s API for certain AI features and Stripe for membership payments. |
| Product | Chitin connects AI agents to animated avatars, voice companions, and other presentation surfaces. | Persa is a personal AI companion with long-term memory, proactive messages, voice notes, images, and Digital Life. |
| Support | The support page says the team replies to email support requests within a day; Free includes community support and Plus includes priority support. | The support center accepts tickets for billing, refunds, technical issues, account help, privacy, feature requests, and media inquiries. |