Best Developer Platform With Self-Serve Analytics

Website: https://mixpanel.com

Best for: Product teams that want event-based analytics with a published price

Starting price: $140 per month (monthly billing; $120 billed annually)

Free plan: Yes

Pros: Free plan covers 1M events a month with no card; Growth includes unlimited saved reports, 20,000 replays a month and 50 feature flags; seats are unlimited on every plan

Cons: Growth price climbs fast with volume, reaching $1,176 a month at 10M events on monthly billing; Group Analytics for company-level reports is a priced add-on

Mixpanel prices by events, not by seats, and the free plan covers 1M events a month with no card required. Growth starts at $0 for the first 1M events, then $140 a month on monthly billing for 1.5M events, or $120 a month billed annually. The price rises with volume: $259 a month at 2M events, $613 at 5M and $1,176 at 10M on monthly billing, with yearly billing about 30 percent lower. Growth includes unlimited saved reports and cohorts, 20,000 session replays a month, 50 feature flags and 5,000 experiment monthly users, and it caps at 20M events a month before Enterprise pricing applies.

The free plan is usable for a young product, with core funnels, flows, retention curves and 10,000 session replays, but it caps saved reports at 5 per user. The main limits are the volume curve and the add-ons: Group Analytics for company-level reporting costs extra, and session replay and feature flags are capped on lower tiers. Mixpanel suits a product team that wants a published price and unlimited seats, and that can forecast its event volume month to month.

Website: https://amplitude.com

Best for: Teams that want a generous free tier and per-event pricing

Starting price: $75 per month (billed annually) for 3M events

Free plan: Yes

Pros: Free plan covers 2M events a month with no time limit and no card; Plus scales to 70M events a month; startup program gives a free year on Growth

Cons: Growth and Enterprise are custom priced with no self-serve path past Plus; per-event billing makes the bill hard to forecast when event volume spikes

Amplitude moved to per-event billing in 2026, and the free Starter plan covers 2M events a month with no time limit. Plus starts at $0 with those 2M events included, then the price follows a slider: $75 a month billed annually for 3M events, $225 for 5M, $576 for 10M and $1,260 for 20M, up to $4,692 for 70M events. Monthly billing costs about 20 percent more than annual billing. Plus includes unlimited product analytics, behavioral cohorts, feature tagging and custom audience syncs, plus 10,000 session replay sessions a month.

The free plan is the most generous here by event count, and Plus is the only priced tier you can buy without a sales conversation. Growth and Enterprise are custom priced, and buyer data puts the median Amplitude contract at about $64,000 a year, far above the Plus list price. Amplitude suits a team that wants to start free at real volume and budget from a public page up to 300,000 monthly tracked users or 25M events, and that does not need experimentation or advanced behavioral analysis at the entry tier.

Website: https://posthog.com

Best for: Developer-led teams that want analytics, replay and flags in one open-source stack

Starting price: $0 per month (usage-based, $50 per extra million events)

Free plan: Yes

Pros: No base fee and no per-seat charge, with 1M free events, 5,000 free recordings and 1M free flag requests every month; self-hosting is available for teams that want full data control

Cons: Costs accumulate per product once you pass the free allowances, and identified events cost about 4 times anonymous events; team security features need a platform package from $250 a month

PostHog has no monthly subscription and no seat pricing. There are two plans, Free and pay-as-you-go, and both start at $0 with the same monthly free allowances: 1M product analytics events, 5,000 web session recordings, 1M feature flag requests, 1,500 survey responses and 100,000 error tracking exceptions. Past the allowance you pay per unit on a sliding scale: analytics events start at $0.00005 each, so the second million events costs $50, and the rate falls to $0.000009 above 250M events a month. Session replay starts at $0.005 per recording and feature flags at $0.0001 per request.

The free tier is genuinely usable: PostHog says 97 percent of companies using it pay nothing, and a small app can run analytics, replay, flags, surveys and error tracking at once and still pay nothing. The costs to watch are identified events, which cost about 4 times anonymous events because person profiles are billed as a separate line item, and the platform packages, Boost at $250 a month, Scale at $750 and Enterprise at $2,000, which buy enforced SSO, SAML, audit logs and access control. PostHog suits a developer-led team that wants one stack and a $0 base, and that can cap each product with a billing limit.

Website: https://www.heap.io

Best for: Teams that want autocapture without writing tracking code

Starting price: quote only

Free plan: Yes

Pros: Free plan covers 10,000 sessions a month with core analytics, heatmaps and 6 months of history; autocapture records every interaction without manual instrumentation

Cons: All priced plans need a sales conversation and an annual contract, with no public price; the free tier is capped at 10,000 sessions and 6 months of history

Heap, now owned by Contentsquare, captures user behaviour automatically, so teams can define events retroactively instead of instrumenting each one in advance. The free plan costs $0 for up to 10,000 sessions a month, with core analytics charts, unlimited enrichment sources, guides integrations, heatmaps, journey maps and SSO, plus 6 months of data history. Growth adds Sense AI, unlimited users and reports, chart customization, CSV export and 12 months of history, while Pro adds account analytics and session replay as an add-on, and Premier adds data warehouse integration and region-specific storage.

Every priced tier is quote only, and Heap publishes no number for Growth, Pro or Premier. Third-party reports put Growth near $3,600 a year, but that figure is unconfirmed and should not be used for budgeting. Annual contracts are required for priced plans, and the free tier is small: 10,000 sessions a month and 6 months of history. Heap suits a team that values autocapture and retroactive analysis above price transparency, and that can live inside the free tier or negotiate a contract.

Website: https://www.pendo.io

Best for: Product teams that want analytics plus in-app guides in one tool

Starting price: quote only

Free plan: Yes

Pros: Free plan covers 500 monthly active users with product analytics, in-app guides and NPS surveys at no cost; no per-seat charges for internal admins

Cons: Base, Core and Ultimate all read custom pricing, so every priced plan needs a sales conversation; the free plan excludes session replay, integrations and the Resource Center

Pendo combines product analytics, in-app guides, session replay and sentiment surveys on one bill, counted against a single monthly active user number. Pendo Free is a permanent $0 tier for up to 500 monthly active users, with product analytics, in-app guides, Pendo-branded roadmaps and Pendo-branded NPS surveys, plus 12 months of event-data history and unlimited internal teammates. There is no credit card required, and the free plan includes retroactive data collection.

The priced tiers are Base, Core and Ultimate, and every one reads custom pricing on the public page, with no calculator and no self-serve checkout. Buyer benchmarks put entry Base contracts near $7,000 to $15,000 a year and Core near $15,000 to $35,000, but those are third-party figures, not Pendo prices. Crossing the free cap does not switch Pendo off: you cannot create new guides, NPS surveys or segments until you upgrade. Pendo suits a team under 500 monthly active users that wants analytics and guides for free, or a larger team ready to negotiate an annual contract.

Website: https://www.fullstory.com

Best for: Teams that want session replay with product analytics

Starting price: quote only

Free plan: Yes

Pros: FullstoryFree gives 30,000 sessions a month and 12 months of data retention with no card; heatmaps, frustration signals and StoryAI summaries on priced plans

Cons: All three priced plans need a quote, and contracts commonly run $10,000 to $25,000 a year for small teams; mobile analytics is a priced add-on at every tier

Fullstory is a digital experience platform built on session replay, heatmaps, frustration signals and product analytics. FullstoryFree is a permanent version of the platform for individuals and small teams: 30,000 sessions a month, 12 months of data retention, session replay, basic analytics and debugging tools for up to 10 users, with no card required. The priced plans are Business, Advanced and Enterprise, and each one says request pricing and demo, with no public price. Dashboards, StoryAI and anything above 30,000 sessions need a priced plan.

Buyer data puts small teams on the Business tier at $10,000 to $25,000 a year, mid-market teams on Advanced at $30,000 to $70,000, and Enterprise deployments above $80,000 a year, with a median buyer at about $27,872 a year. Recording pauses when you hit your session cap, so underestimating traffic can leave gaps in the data. Fullstory suits a team that wants the most generous free replay tier here and is ready to negotiate once it outgrows 30,000 sessions a month.

Website: https://www.statsig.com

Best for: Teams that want feature flags, experiments and analytics together

Starting price: $150 per month

Free plan: Yes

Pros: Developer plan is free with 2M events a month, unlimited flag checks and no card; Pro at $150 a month includes 5M events, 100,000 session replays and change reviews

Cons: Pro is limited to a single project, so multi-project teams need Enterprise; overage at $0.05 per 1,000 events can grow fast at high volume

Statsig is a hosted platform for feature flags, experiments and product analytics, now run by Amplitude after OpenAI acquired the Statsig team in 2025. The Developer plan is free with no card: 2M events a month, 50,000 session replays a month, unlimited flag and config checks, unlimited seats and 1 year of analytics retention. Pro costs $150 a month with 5M events included, then $0.05 per 1,000 events over that, plus 100,000 session replays a month, advanced experimentation, unlimited analytics retention and change reviews. Enterprise is by contract, with warehouse-native deployment, SSO, role-based access, EU hosting and a service level agreement.

The split between flags and analytics is the point: flag and config checks are free and unlimited on every tier, and you pay for analytics events, not for flags. Pro is limited to a single project, so a team running several products needs Enterprise. Statsig suits a team that wants experimentation and flags in the same tool as its analytics, and that can live inside 5M events a month or budget $0.05 per 1,000 events over it.