Amplitude vs PostHog

Amplitude is a product analytics service with event tracking, conversion funnels, session recordings, and ecommerce tracking. It also provides API access and extended data retention. The platform is listed as API-based. Its Free plan costs nothing and includes up to 2M events per month, 10,000 monthly session replays, and 2,000 AI feedback records; it is billed free forever and requires no credit card. Plus is listed at free, with the first 2M events per month free and a credit card required. It supports up to 70M events, 20 behavioral cohorts, and two-year data retention. Amplitude, the maker, was founded in 2012 and is headquartered in San Francisco, California, United States.

PostHog is a platform for building products, communicating with customers, and understanding customer data. Its suite includes product and web analytics, funnels, heatmaps, graphs and trends, lifecycle analysis, and user paths. Session Replay records sessions from web, React Native, iOS, Android, Flutter, and other SDKs. Feature Flags can target users, groups, or traffic percentages and support phased rollouts, kill switches, multivariate variants, JSON payloads, and beta opt-ins. An integrated data warehouse can use external sources such as Snowflake or BigQuery. PostHog CDP transforms events in real time and sends them to more than 50 destinations, including webhooks, Slack, Braze, and Customer.io. PostHog Desktop is a coding agent that can use product signals such as errors, support tickets, session replays, GitHub issues, Linear, and Zendesk to investigate causes and create pull requests. The free plan includes one year of event and metadata retention; free recordings are kept for one month. Paid plans guarantee seven years of event and metadata retention. PostHog also describes an open-source product licensed under MIT.