About
Built for teams who ship.
SignaKit is a feature flags and experimentation platform for engineering teams. We built the tool we wished existed — complete, predictable, and priced for teams at every stage.
Why we built this
Feature flags shouldn't cost as much as a full-time hire.
The tools engineering teams reach for to ship safely — feature flags, A/B tests, gradual rollouts — have become expensive. The incumbents charge per seat, add MAU fees as you grow, and lock A/B testing behind enterprise contracts.
We kept hitting the same friction: wanting to run a simple experiment, needing a flag for a percentage rollout, tracking a conversion event — and finding that the cost or complexity of the tooling didn't match the value of the task.
SignaKit started as an answer to that frustration. Flag evaluations should be free. A/B testing should be included. Pricing should scale with usage, not headcount. And the developer experience — the SDK, the dashboard, the documentation — should be something engineers actually enjoy.
Official SDKs
Node.js, React, Browser, PHP, Laravel, and more
Flag evaluation latency
Local evaluation — no network roundtrip on the hot path
Experiment types
A/B testing, multivariate, and multi-armed bandit on every plan
To get started
1M exposures/month, 3 members, 1 project — no credit card required
What we believe
The principles behind SignaKit
Pricing that makes sense
Per-seat pricing penalizes team growth. MAU charges punish success. We built SignaKit on event-based pricing so your bill reflects usage — not headcount. Flag evaluations are always free.
Built for engineers, not just managers
Feature flags should be something engineers reach for instinctively, not a tool that requires a purchase order and a sales call. We prioritize the SDK and developer experience first.
Experimentation should be standard, not a premium add-on
A/B testing and multi-armed bandit optimization should be available to every team — not locked behind enterprise pricing. Every SignaKit plan, including the free tier, includes them.
No surprises
Overage billing at $0.05 per 1,000 events sounds small until a high-traffic week turns your $150 bill into something much larger. SignaKit's overage rates are flat-tier and predictable. Hard stops on the free plan mean no accidental charges.
The team
A small team building tools for engineers.
SignaKit was founded in 2024 by Robbie Crenshaw, a software engineer who spent years building and shipping products across multiple teams. The recurring frustration: every time a project needed feature flags or experimentation, the available tools were either overpriced for small teams or under-featured for serious use. SignaKit exists to fix that.
The platform launched with SDKs across five ecosystems — Node.js, React, Browser, PHP, and Laravel — and multi-armed bandit optimization available on the free tier from day one. We are early stage and move fast. If you have feedback, a feature request, or just want to talk about the product, we read every message.
Ready to start shipping with confidence?
Feature flags, A/B testing, and multi-armed bandits — free to start, no credit card required.