Featureflip

Featureflip provides feature flags to control functionality in a running application without deploying new code. It supports percentage rollouts, targeting rules, kill switches, A/B tests, and isolated environments. Developers can use thirteen SDKs and OpenFeature providers, manage flags through a REST Management API, or evaluate them through an Evaluation API. Server SDKs evaluate from an in-memory configuration and continue with the last configuration if the service cannot be reached. A GitHub Action can open a reviewable pull request to remove a retired flag’s code path across thirteen languages, then archive the flag after the change is merged. Integrations include an MCP server for Claude Code, Cursor, Copilot, and Cline, plus a Terraform provider and GitHub Action. Featureflip says its service and PostgreSQL database run on Hetzner Cloud in the European Union. Evaluation context is not stored; server SDKs do not transmit it, while client SDKs send it for evaluation and it is then discarded. Plans include a free tier with one project, ten flags per project, two environments, and up to three team members. Paid Team pricing is $49 a month.

Featureflip combines rollout controls with APIs, SDKs, and a workflow for removing retired flags. Review the free-tier limits and paid-plan allowances before choosing a plan.

Featureflip may suit small teams, indie developers, startups, and consultants managing feature rollouts across applications. It also offers integration options for teams using SDKs, APIs, GitHub Actions, or Terraform.

Overview

Featureflip is feature-flag software for teams that need to change running applications without shipping new code. It is best suited to small development teams that want rollout controls and flag cleanup tied to their engineering workflow. The standout advantage is its route from a retired flag to a reviewable code-removal pull request; the free plan’s strict project and flag caps make it a poor fit for growing portfolios.

Key features

Percentage rollouts, targeting rules, kill switches, A/B tests and isolated environments cover both gradual releases and fast reversals. That breadth makes Featureflip useful when experimentation and release controls need to share infrastructure. Server-side testing and mobile SDK support broaden its fit, but there is no visual editor, so teams that expect to build experiments visually should choose another tool.

Flag cleanup is a practical differentiator: a GitHub Action can open a reviewable pull request to remove a retired flag’s code path across thirteen languages, then archive the flag after merge. This puts cleanup into the code-review process rather than leaving it as a manual follow-up.

Developers can use thirteen SDKs and OpenFeature providers, manage flags through the REST Management API, or evaluate them through the Evaluation API. An MCP server connects agents including Claude Code, Cursor, Copilot and Cline; a Terraform provider and GitHub Action support infrastructure and repository workflows. Server SDKs evaluate from an in-memory configuration and continue with their last configuration if Featureflip cannot be reached, a useful resilience measure for runtime decisions.

Featureflip says its service and PostgreSQL database run on Hetzner Cloud in the European Union. Evaluation context is not stored: server SDKs do not transmit it, and client SDKs send it for evaluation before it is discarded. Two-factor authentication is available on every plan; account security also includes Google sign-in, hashed passwords and temporary lockouts after repeated failed sign-ins.

Pricing

The free plans are generous enough to start, but their caps differ. Solo is free forever and allows one developer, one project, ten flags per project, two environments and seven-day audit logs. Free keeps the same project, flag, environment and log limits, but allows up to three team members and adds one webhook endpoint; community support is included. For an individual, Solo covers the basics, while Free is the more useful entry point for a small team that needs webhook access.

Team costs $49 a month, or $39 /mo billed annually. It raises capacity to three projects, unlimited flags, three environments per project and five team members, with 30-day audit logs, three webhook endpoints and email support. This is the sensible step up for a small group that has outgrown the free project or flag caps, though three environments per project may still constrain more complex release setups.

Pro costs $99 a month, or $79 /mo billed annually. It allows ten projects, five environments per project and up to ten team members, adding flag owners while retaining unlimited flags, 30-day audit logs, three webhook endpoints and email support. The extra project and environment headroom suits teams coordinating more applications; it does not extend audit retention over Team.

Business costs $249 a month, or $199 /mo billed annually. Its 25 projects, unlimited environments, up to 25 team members, 90-day audit logs, unlimited webhook endpoints and priority support suit larger teams with more demanding collaboration and review needs. Enterprise has custom pricing, with custom scale and requirements, custom data retention, a contracted SLA, on-premise deployment and SAML/SCIM for organizations that need those terms.

There is no free trial, so the free forever plans are the available way to assess the product before paying. Choose based on the limits that matter: flags, projects, environments, seats, log retention and support tier.

Platforms

Featureflip supports Android, iOS, macOS, web, APIs and self-hosted use. Its SDKs and APIs make it relevant to both mobile and server-side applications, while the local server evaluation behavior helps when the service is temporarily unreachable.

Who it's for

Featureflip fits indie developers, consultants, startups and small teams that need feature flags across application environments and want stale code paths handled through pull requests. It is less compelling for teams that depend on a visual editor, or for organizations whose required scale or deployment model makes the free and standard paid limits unsuitable.

Pros and cons

• Useful flag lifecycle: rollout controls pair with a GitHub Action that proposes removal across thirteen languages and archives flags after merge.
• Flexible developer access: SDKs, OpenFeature providers, APIs, Terraform and an MCP server give teams several integration paths.
• Local server evaluation: SDKs can use their in-memory configuration and last known settings during a Featureflip outage.
• Free-tier ceilings: one project and ten flags per project can force a paid upgrade as work expands.
• No visual editor: experiment setup is not aimed at teams that want a visual editing workflow.
• Plan trade-offs: Team and Pro retain only 30 days of audit logs, while longer retention and unlimited environments require Business.

Alternatives

For dedicated experimentation comparisons, browse A/B Testing Tools; for broader flag-platform choices, see Feature Flag Software.

• Apex is another freemium option with a free plan and free trial; its listed platforms are Android, API, iOS and web.
• Confidence by Spotify has a free plan with 75,000 credits per month, unlimited flags and seats, up to five surfaces, Google SSO, EU or US hosting and a one-month audit log; consider it when those free allowances match your needs.
• Firebase Cloud Messaging is a no-cost option for teams seeking a free messaging service rather than Featureflip’s feature-flag workflow.
• GrowthBook offers a self-hosted open-source plan with one project, unlimited flags, unlimited experiments and unlimited traffic; it is a fit for teams prioritizing self-hosted experimentation.
• Nativeblocks has a free tier for up to 1,000 active users aimed at prototypes and side projects, with a $19 a month Starter plan.
• Webtrends Optimize offers a free account for websites with fewer than 10,000 sessions each month, with the same features as its paid version.
• DevCycle is a freemium alternative with a free plan and platforms spanning Android, API, extension, iOS and web.
• Experimently offers a free preview self-hosted on your AWS account with all features included; consider it if that deployment arrangement suits you.

Verdict

Featureflip is a strong choice for small development teams that want release controls, APIs and a credible cleanup path in one system. Its integration range and pull-request-based flag removal are the clearest reasons to choose it. Look elsewhere if a visual editor is essential, or compare paid plans carefully if your work needs more projects, environments, seats or audit history than the free tier allows.