Feature checklists rarely decide anything. What decides it is the pricing metric, who has to write the tests, and which limitation you can live with.
Entry price
Free tier available
Free tierFrom $12 per seat/month plus context-based usage (indicative)
PaidWhat drives the bill
The metric that actually scales your invoice.
Paid tiers are quote-based, priced by monthly tracked keys.
Priced on seats plus monthly contexts (roughly, unique users evaluated). High-traffic consumer products get expensive.
Free tier
Free tier with limited monthly tracked keys.
14-day trial; no permanent free tier.
Open source
Self-hostable
No-code authoring
Languages
Platforms
Fits teams
Adoption
Established
Harness · since 2015
Category standard
LaunchDarkly · since 2014
Strengths
Limitations
Best for
Teams that want every release measured, not just deliberate experiments.
Engineering organisations where flags are critical infrastructure and governance is required.
All of these integrate with: Segment, Datadog, Snowflake, Slack, Jira, New Relic.
Pricing last reviewed August 2026 and is indicative only — confirm on each vendor’s own page.