Amplitude Alternatives

PostHog

Free plan

9.4 /10

PostHog is the open-source product analytics suite with transparent per-unit pricing across all products. Free tier: 1M events + 5K recordings + 1M feature flag requests + 100K exceptions + 1.5K surveys + 1M data warehouse rows monthly (most generous free tier in category). Pay-as-you-go: $0.00005/event, $0.005/recording, $0.0001/flag request, $0.000015/warehouse row. Self-hosted open-source deployment free. All eight products (analytics + replay + flags + experiments + warehouse + errors + surveys + LLM) in single platform.

• Most generous free tier across entire product analytics category
• Fully transparent per-unit pricing — no sales contact required at any scale
• Most comprehensive product suite (8 products) in single platform

Full Review Visit PostHog

Mixpanel

Free plan

9 /10

Mixpanel is the product analytics category pioneer (founded 2009). Free: 1M events + 5 saved reports + 10K session replays + unlimited user seats. Growth: $0 for first 1M events, $0.28 per 1K events up to 20M + 20K replays + unlimited reports + behavioral cohorts + AI query builder. Enterprise custom (up to 1T events). Startup program: first year free on Growth for companies under 5 years + under $8M funding.

• Product analytics category pioneer with 15+ years feature maturity
• Transparent event-based pricing ($0.28 per 1K events — easy to model TCO)
• 20K session replays/month included on Growth is generous for mid-market

Full Review Visit Mixpanel

Pendo

Free plan

8.4 /10

Pendo is the digital adoption platform (product analytics + in-app guides + sentiment surveys). Free: 500 MAUs + Product Analytics + In-app Guides + Pendo-branded NPS. Base/Core/Ultimate all custom pricing. Core adds session replay. Ultimate adds sentiment surveys (NPS, PMF, CSAT), Orchestrate, Listen, Data Sync. Industry estimates: Base $15-40K/year, Core $30-80K/year, Ultimate $50-200K+/year. Vista Equity investor (same PE as Gainsight — potential pricing alignment).

• Digital adoption platform unifies product analytics + in-app guides + sentiment surveys
• In-app guides + onboarding workflows unique among product analytics vendors
• Strongest PLG + customer-onboarding focus in product analytics category

Full Review Visit Pendo

Heap (Contentsquare)

Free plan

8.3 /10

Heap (acquired by Contentsquare 2024) uses session-based pricing unique in category. Free: 10K sessions/month + core analytics charts + unlimited enrichment + SSO + 6-month data history. Growth/Pro/Premier all custom pricing. Differentiator: auto-capture events (captures all user events automatically without manual tagging). Industry estimates: Growth $15-40K/year, Pro $30-80K/year, Premier $60-200K+/year. Now operates as product analytics product line within Contentsquare's Digital Experience Intelligence platform.

• Auto-capture events removes instrumentation barrier (unique differentiator)
• Session-based pricing advantages deployments with deep engagement per session
• Contentsquare acquisition provides broader digital experience platform integration

Full Review Visit Heap (Contentsquare)