Amplitude vs PostHog for Solo Developers

Quick Comparison

Amplitude Overview

Amplitude is the enterprise-grade product analytics platform that many large product teams standardized on over the last decade. The query depth is genuinely impressive. Behavioral cohorts, pathfinder, advanced funnels, retention matrices, and predictive analytics are all polished and well-instrumented. For a serious product team with a dedicated analyst, Amplitude is a powerful tool.

The free tier covers up to 50,000 monthly tracked users and 10 million events per month, which sounds generous on paper. For solo devs at the early stage, that's plenty. The catch is that paid plans aren't publicly priced and require talking to sales, which signals where Amplitude's commercial focus actually sits.

Amplitude has expanded into experimentation, CDP, and session replay over the past few years, mostly through acquisition. The integration is real but the products still feel somewhat separate. For an enterprise team that wants one vendor for everything, it works. For a solo dev, the breadth often comes with friction.

PostHog Overview

PostHog is the open-source product OS that combines event analytics, session replay, feature flags, A/B testing, surveys, error tracking, and a data warehouse into one platform. The pitch is simple, which is that one tool with one bill replaces five or six specialized products.

The free tier covers 1 million events per month across the suite. Beyond that, pricing is transparent and usage-based on the website. No sales calls, no "contact us for pricing", just numbers you can read. For solo devs evaluating tools, this transparency is itself a major feature.

PostHog can be self-hosted, which is the escape hatch enterprise tools never give you. Self-hosting on a Hetzner box is realistic for moderate-volume projects and gives you full data ownership. Most solo devs run on the cloud version for convenience, but the option being there matters.

Key Differences

Pricing transparency is the most obvious difference. PostHog publishes its prices and you can calculate your bill before signing up. Amplitude's paid plans require a sales call, which is friction that solo devs simply won't tolerate. If you can't price the tool before committing, the tool isn't really for you.

Amplitude's query depth still wins on advanced analytics. Behavioral cohorts, predictive analytics, and some of the more sophisticated funnel analyses are more polished on Amplitude. If you have an analyst writing complex queries against product data daily, Amplitude has features PostHog doesn't match yet. For solo devs asking basic questions, both platforms answer them fine.

PostHog bundles everything Amplitude sells separately or by acquisition. Session replay, feature flags, experimentation, and surveys are core PostHog products at no extra cost beyond event volume. Amplitude charges for these as add-ons or separate products. For a solo dev who actually needs replay plus flags plus analytics, PostHog's bundled pricing wins by a wide margin.

Self-hosting is a PostHog-only option. Amplitude offers no self-host path. If your project needs to keep data on your own infrastructure for compliance, cost, or principle reasons, PostHog is the only option of the two. This matters more for some projects than others, but the optionality is real.

Onboarding speed favors PostHog. PostHog's SDK install, dashboard setup, and first event are a fifteen-minute exercise. Amplitude's onboarding involves more configuration, more decisions about taxonomy, and more setup before you see real data. For solo devs who want to install once and move on, PostHog gets out of the way faster.

When to Choose Amplitude

• You're working at or building for an enterprise context with budget
• Advanced behavioral cohort analysis is a core part of your workflow
• You have an analyst or dedicated PM doing serious data work daily
• Your event taxonomy is complex and benefits from Amplitude's structure
• You're already invested in the Amplitude ecosystem from prior work

When to Choose PostHog

• You're a solo developer who wants transparent pricing
• You need analytics, session replay, and feature flags in one tool
• Self-hosting flexibility might matter to you down the line
• Fast onboarding and minimal taxonomy work appeal to you
• You want a product that ships meaningful updates regularly

The Verdict

For solo developers in 2026, PostHog is the clear winner. The bundled feature set, the transparent pricing, the fast onboarding, and the self-host option together make it the right answer for almost every solo dev situation. Amplitude is built for a different customer.

Amplitude has real strengths. The query depth and the polish on certain advanced analytics views are genuinely better than PostHog's. If you're an analyst who lives in product analytics tools all day and you need every advanced feature, Amplitude is a more mature product on those specific surfaces. But that's a tiny slice of the audience, and almost none of that slice is solo devs.

The blunt take is that Amplitude isn't really competing for solo dev attention anymore. The free tier exists, but the moment you outgrow it you're in a sales process. That's fine if you're a 50-person product team with budget. It's not fine if you're one person trying to ship a side project. PostHog made the bet that small teams and solo devs deserve enterprise-grade tools at indie prices, and they've delivered on that bet. Install PostHog, configure the free tier, get back to building.