Head-to-Head Comparison · Alternative to Amplitude · 📊 analytics
Amplitude vs PostHog
Funnels, cohorts and retention on a free million-event allowance; the kitchen sink comes along. Here is how PostHog ($0/mo open source) stacks up against Amplitude (paid subscription) across cost, hosting, data privacy, and real-world trade-offs.
Amplitude vs PostHog Specification Matrix
facts verified 2026-08-10
| Dimension | Amplitude (Paid) | PostHog (Replacement) |
|---|---|---|
| Monthly Price | Paid tier | $0 / mo |
| Source & License | Proprietary SaaS | open source MIT |
| Where It Runs | Vendor Cloud | Local or hosted (your machine or their cloud) |
| Platforms | Web / Cloud | mobilewebthey host it |
| GitHub Stars | — | ★ 38k (active aug 2026) |
Deep Dive: Switching from Amplitude to PostHog
Trade-offs, installation & data architecture
What you trade away
Its kitchen-sink product is heavier, while Amplitude's core product-analytics workflows and governance are more refined.
How to deploy PostHog
Create a PostHog Cloud project or use the hobby self-host script on a Linux server
What it takes to run
None for hosted signup; self-hosting is an unsupported, resource-heavy multi-service stack requiring serious operations work
Where your data lives
The self-hosted stack splits analytics, transactions, queues and recordings across ClickHouse, PostgreSQL, Kafka, Redis and object storage; cloud data lives in PostHog's managed regions
Why fork PostHog instead of vibe-coding a Amplitude clone?
A consolation build is possible, but the paid product's decisive value sits outside a solo rebuild. For Amplitude, build a bounded event explorer for funnels, cohorts, and retention on one product. The hard boundary is behavioral data platform, experimentation, identity, governance, and scale, plus data pipeline reliability and analytical depth.
Amplitude vs PostHog FAQ
Is PostHog a good free alternative to Amplitude?+
Yes. PostHog is a verified open-source (MIT) replacement for Amplitude. Funnels, cohorts and retention on a free million-event allowance; the kitchen sink comes along.
What is the catch when switching from Amplitude to PostHog?+
Its kitchen-sink product is heavier, while Amplitude's core product-analytics workflows and governance are more refined.
How do I install or self-host PostHog instead of Amplitude?+
Install: Create a PostHog Cloud project or use the hobby self-host script on a Linux server. Setup: None for hosted signup; self-hosting is an unsupported, resource-heavy multi-service stack requiring serious operations work
