feat

feat is a hosted feature-flag platform for early engineering teams. Server SDKs evaluate flags locally without a network call for each read, while changes stream to connected SDKs in under a second. Targeting rules can combine AND and OR conditions across users, devices, organizations, sessions, and requests. Sticky percentage rollouts keep a user, device, or organization on the same variation across requests and sessions. First-party SDKs are available for Node.js, Bun, Deno, Go, Python, Ruby, browser JavaScript, and Flutter/Dart; feat also provides OpenFeature providers for web, Node.js, and Dart. Metric sources include Segment, Mixpanel, PostHog, and custom sources. The free plan includes 7,500 MAU, 100 server connections, two projects, unlimited environments, and unlimited flags. Starter is $19 a month, with annual billing listed at $15/mo. Built-in statistical experiments and Slack integration are listed as coming in Q3 2026, rather than current features.

feat offers flag evaluation, targeting, and rollouts with a free tier and SDKs across several languages. Teams needing experiments or Slack integration should note that these are listed as future additions.

feat is aimed at early engineering teams that need feature flags, targeting rules, and percentage rollouts. Its SDK range and OpenFeature providers may suit teams building across multiple languages or platforms.

feat is a hosted feature-flag service for early engineering teams that need to target and roll out changes across applications. It suits teams prioritizing local server-side evaluation and sticky assignments; its current focus is flag management rather than a finished experimentation suite.

Overview

Server SDKs evaluate flags locally, avoiding a network call for each flag read, while updates stream to connected SDKs in under a second. That is a practical fit for services with frequent checks and teams that want rollout changes to propagate quickly. Targeting can span users, devices, organizations, sessions, and requests, giving engineers several ways to scope a release.

Key features

Targeting and rollouts

Rules combine conditions with AND and OR logic, which supports precise targeting but requires teams to design and maintain their own criteria. Sticky percentage rollouts keep a user, device, or organization on the same variation across requests and sessions, making staged releases more consistent.

SDKs and integrations

First-party SDKs cover Node.js, Bun, Deno, Go, Python, Ruby, browser JavaScript, and Flutter/Dart. feat also provides OpenFeature providers for web, Node.js, and Dart, useful for teams adopting that interface. Pluggable metric sources include Segment, Mixpanel, PostHog, and custom sources. A statistical engine, variant tracking, metric integrations, automatic gradual-rollout advancement, and Slack integration are planned for Q3 2026; teams needing those capabilities now should choose a more complete option.

Privacy and security

Backend SDKs send no evaluation context to feat; browser SDKs send only hashed identifier-and-kind pairs for MAU counting. Customer-facing endpoints use TLS 1.2+ and HSTS, and managed-service encryption at rest covers Postgres, R2, and KV. These are useful protections, but teams with formal compliance requirements should note that SOC 2 Type I scaffolding is in progress, Type II is planned after the standard observation window, and ISO 27001 is on the roadmap.

Pricing

The Free plan costs nothing and includes 7,500 MAU, 100 server connections, two projects, unlimited environments, and unlimited flags. It is a meaningful starting point for small teams, though community support and 30-day audit-log retention may not suit teams that need faster assistance or a longer record.

Starter costs $19 a month, or $15/mo billed annually. It raises the allowance to 25,000 MAU and 250 server connections, with a 90-day audit log and a 48-hour email response target. This fits teams outgrowing Free, but does not include the 99.9% SLA offered by Growth.

Growth costs $49 a month, or $39/mo billed annually, for 100,000 MAU, 750 server connections, a one-year audit log, a 99.9% SLA, and 24-hour email support. It is the more appropriate paid tier when service commitments and longer audit history matter. Scale costs $149 a month, or $119/mo billed annually, and includes 500,000 MAU, 2,500 server connections, three-year audit retention, and an eight-hour email response target.

Elastic costs $299 a month, or $239/mo base billed annually. It includes 1M MAU and uncapped server connections, with additional usage at $0.20 per 1,000 MAU above 1M; that makes the overage rate important for high-traffic teams. Enterprise has custom pricing and adds custom contracts, SCIM, private tenancy, data residency, and a dedicated CSM.

Platforms

feat supports Android, iOS, web, and API use. Its SDK coverage across server, browser, and Flutter/Dart environments gives engineering teams several implementation paths.

Who it's for

feat is best suited to early engineering teams that want local evaluation, flexible targeting, and consistent percentage rollouts without a network call on every server-side read. Teams that need built-in experimentation today, formal compliance certifications, or a guaranteed response target on the Free plan should weigh other providers.

Pros and cons

• Pros: Local server-side evaluation avoids a per-read network call, while updates stream in under a second.
• Pros: Targeting across several entity types and sticky rollouts give engineers control over release scope and assignment consistency.
• Pros: Broad first-party SDK coverage and OpenFeature providers support a range of implementation choices.
• Cons: Core experimentation capabilities and Slack integration are planned for Q3 2026 rather than available now.
• Cons: Compliance work remains in progress or on the roadmap, which may rule it out for teams that require those certifications today.
• Cons: The Free plan has a 7,500 MAU cap and community support, so teams that exceed its usage or need a response commitment must pay.

Alternatives

ConfigCat is worth considering when a free plan's higher configuration-download allowance matters: its Forever Free plan includes 5 million config JSON downloads per month and 20 GB of network traffic, alongside 10 flags, two environments, and two products.

Featureflow may fit a small team prioritizing seat limits and a no-credit-card free tier: its Free plan is free forever and includes up to five seats, one project, two environments, 1M SDK requests per month, and a seven-day audit trail.

Flagsmith is an option for teams that prioritize open-source core flag functionality; its maker says most of the product is under the BSD-3 licence.

Bucketeer is the alternative to consider when self-hosting and avoiding per-seat pricing are priorities; its open-source plan is free forever.

DevCycle is another freemium option for teams comparing client-side MAU and config-request allowances.

Featurevisor is a free, self-hosted alternative under the MIT License with no per-seat pricing.

GO Feature Flag suits teams looking for an open-source option they can run on their own infrastructure, with unlimited flags and community support.

GrowthBook is worth comparing when self-hosted feature flags and experiments with unlimited traffic are priorities.

Verdict

Choose feat if your engineering team wants fast-propagating configuration changes, local flag evaluation, and stable rollouts across several SDK environments. Its strongest case is focused flag delivery with useful targeting; look elsewhere if experimentation, Slack integration, or established compliance certifications are requirements today.