Amplitude alternative and competitors that tell you why users churn, not just what they did

It depends which constraint pushed you to look. If it was pricing predictability, Mixpanel publishes the clearest unit rate in the category and gives you most of the same behavioral analysis. If it was engineering ownership and tool sprawl, PostHog bundles analytics, replay and flags on one usage-based bill with no platform fee. If it was instrumentation effort, Heap's retroactive autocapture means you can ask questions about events nobody thought to track.

If what pushed you was the meeting where the chart made sense and the reason did not, none of those three will change that meeting. That is the specific gap UserInsight is built for.

Amplitude prices on events, not seats, and all plans carry unlimited seats. Re-checked against amplitude.com/pricing in August 2026, the free plan includes 2 million events per month with no time limit plus 10,000 session replays, the Plus plan starts at zero with a card and scales up to 70 million events with two year data retention, and Growth and Enterprise are quoted by sales rather than published. Session replay allowances step up with the tier, from 10,000 a month on Free to 20,000 on Growth and 50,000 on Enterprise. Startups with under $10 million in funding and fewer than 20 employees get one free year on the Growth plan, which is worth checking before you evaluate anything else.

One structural detail is easy to miss: Amplitude states that its expanded add-on packages are priced as a percentage of your platform plan rather than as a flat fee, so add-on cost scales with contract size instead of staying fixed. Note too that plenty of comparison pages still describe Amplitude as billing on monthly tracked users. Its current pricing page prices on events, so if you are handed a number, ask which unit the contract is written against before comparing it to anything.

The budgeting risk with event pricing is that costs follow instrumentation discipline rather than headcount. A sloppy tracking plan that fires a dozen redundant events per session can multiply the bill without adding a single answer, which is why teams on event-based tools end up governing their taxonomy far more carefully than teams on seat-based ones.

PostHog is the main one people mean. It is open source under an MIT license, covers product analytics, session replay, feature flags, experiments, surveys and error tracking in a single platform, and prices per product with a free tier of 1 million analytics events a month on cloud. For engineering-led teams, it is a genuine option rather than a compromise.

Be realistic about the self-hosting part, though, because it is the reason most people name PostHog here and it does not hold up the way it is usually described. PostHog's own documentation states that self-hosted deployments are officially unsupported, that all paid-plan features are Cloud-only, and that new Kubernetes deployments of the paid open source product are no longer supported. On top of that, running an event pipeline yourself means owning storage, upgrades and query performance, and the engineering time that consumes is usually worth more than the license you avoided. Most teams who evaluate self-hosting end up on the managed cloud version, and PostHog itself recommends exactly that.

For most teams the honest answer is no, and it is not meant to. Amplitude is best in class at deep ad-hoc behavioral querying, and if your analysts live in that interface, ripping it out to save a line item is a bad trade. UserInsight tracks usage, funnels and retention, but the reason to bring it in is the qualitative layer, not to duplicate what you already have.

The pairing that works is behavioral tool plus why layer. Keep the funnel you trust, then attach the tickets, reviews and survey replies from the same users so the drop arrives with candidate causes already named and traced back to the evidence behind them.