Most teams don't go looking for a LaunchDarkly alternative on day one. They find themselves here after one of three moments: the first production bill, the first time they tried to add a second project, or the first afternoon spent wiring up an SDK that should have taken 15 minutes.

This article is for that moment. It's not a generic platform roundup. It's a guide for teams already on LaunchDarkly who want to understand what switching actually involves, what they'd gain and lose, and which platform fits their situation.

For a general comparison of all major feature flag platforms from scratch, see Best Feature Flag Platforms 2026.

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Why teams leave LaunchDarkly

The pricing model. LaunchDarkly charges on two dimensions simultaneously: per service connection ($12/month; each environment, microservice, or replica counts as one) and per client-side MAU ($10/1k users/month). A typical setup of 3 environments with 2 replicas each hits $72/month before a single user evaluates a flag. Add 50,000 users and you're at $572/month. At 500,000 MAUs with 10 service connections: $5,120/month for feature flags alone.

The free tier (5 service connections, 1,000 MAUs) is enough to prototype but not to run a real production app. Most teams upgrade quickly, and the jump is steep.

The complexity. LaunchDarkly is built for large enterprises with compliance requirements, dedicated platform teams, and polyglot stacks. Its SDK uses a persistent streaming connection for real-time updates, which adds initialisation overhead and footprint that most teams don't need. TypeScript support is partial: return types are not inferred from a central definition, so you cast values yourself at every call site. If you're a startup or a mid-size JS team, you're operating infrastructure designed for a customer that isn't you.

The per-project multiplier. LaunchDarkly's paid plan doesn't cover all your projects. Each project you add is a separate subscription. Teams with multiple apps (main product, admin panel, internal tools) quickly find themselves paying for three separate LaunchDarkly subscriptions.

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The short answer

For most JS/TS teams: Supaship. It eliminates all three pain points: event-based pricing with no MAU charges, a lightweight SDK designed for TypeScript teams, and a single $30/month plan that covers your entire workspace. Full pricing details here.

Read on for the full migration picture for each alternative.

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Switching to Supaship

Supaship is the most common destination for teams leaving LaunchDarkly because it replaces the feature flag functionality directly, without the enterprise overhead or the pricing model.

What changes

Pricing: Instead of $12/service connection + $10/1k MAU, Supaship charges per flag evaluation (event). Free tier covers 1M events/month across unlimited projects and team members. Pro plan is $30/month for your entire workspace, not per project. The same team that pays $5,120/month on LaunchDarkly pays $30 on Supaship Pro.

SDK: Supaship's SDK is lighter and purpose-built for JavaScript. No persistent streaming connection: flags are fetched on initialisation and can be refreshed on demand. TypeScript inference flows from a single flag definition to every call site: flag names are autocompleted, typos are compile errors, and deleting a flag from your definition surfaces every usage as a TypeScript error.

// LaunchDarkly: types not inferred, you cast at every call site
const showDashboard = ldClient.variation('new-dashboard', false) // any

// Supaship: full inference from a central definition
const FEATURE_FLAGS = {
  'new-dashboard': false,
  'theme-config': { mode: 'light' as 'light' | 'dark' },
} satisfies FeaturesWithFallbacks

const { feature: showDashboard } = useFeature('new-dashboard') // boolean ✓
const { feature: theme } = useFeature('theme-config') // { mode: 'light' | 'dark' } ✓
const { feature } = useFeature('new-dashbord') // ❌ TypeScript error (caught before prod)

Next.js App Router: Supaship has first-class support for Server Components, Edge Middleware, and the hydration-safe patterns the App Router requires. LaunchDarkly's SDK pre-dates the App Router and requires workarounds for server-side evaluation. See the full Next.js guide.

Dev toolbar: Supaship ships a built-in flag override toolbar that appears automatically in development. LaunchDarkly uses a browser extension for the same purpose.

Non-JS backends: Supaship's native SDKs target JavaScript. For Python, Go, Ruby, or any other backend, the REST API evaluates flags with a single HTTP call:

curl -X POST "https://edge.supaship.com/v1/features" \
  -H "Content-Type: application/json" \
  -d '{
    "apiKey": "YOUR_API_KEY",
    "environment": "production",
    "features": ["new-dashboard"],
    "context": { "userId": "user-123" }
  }'

What you give up

Supaship doesn't have LaunchDarkly's experimentation suite, release automation pipelines (Guardian/automated rollback), HIPAA/FedRAMP compliance, or native mobile SDKs. If any of those are active requirements (not just things you might use someday), read the sections below before switching.

Migration effort: low

The conceptual model is identical: flags, environments, targeting rules, percentage rollouts. The migration is mostly mechanical:

1. Recreate your flags in Supaship with matching targeting rules
2. Replace withLDProvider / LDProvider with SupaProvider
3. Replace ldClient.variation() calls with useFeature() / getFeature()
4. Run both SDKs in parallel for one sprint to verify flag parity
5. Remove the LaunchDarkly dependency

Supaship's free tier (1M events/month) lets you run both platforms simultaneously during the transition at zero additional cost.

Best for: JS/TS teams (React, Next.js, Vue, Node.js) that used LaunchDarkly primarily for feature flags, gradual rollouts, and user targeting.

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Switching to Statsig

Statsig is worth considering if the reason you're leaving LaunchDarkly is pricing, and you still want a full-platform experience (flags + experimentation + analytics). Statsig is LaunchDarkly's closest functional peer.

What changes

Pricing: Statsig's free tier is generous (2M metered events/month), but the paid plan has its own trap: $150/month per project. A team with 3 apps pays $450/month base, which is better than LaunchDarkly at the same scale, but still per-project. The "metered events" definition is also non-obvious: 0% and 100% rollouts don't count, but partial rollouts with Metric Lifts enabled do.

Experimentation: Statsig's experimentation engine is where it genuinely beats both LaunchDarkly and Supaship. Bayesian and frequentist analysis, CUPED variance reduction, multi-arm bandits, holdouts, and sequential testing. If you were using LaunchDarkly's experimentation features heavily, Statsig's suite is at least as capable and arguably better.

SDK surface area: Statsig's SDK carries flags, analytics, and experimentation together. More powerful, but heavier initialisation than Supaship. TypeScript types are not inferred from a central definition.

What you give up

HIPAA/FedRAMP compliance (Statsig has HIPAA but not FedRAMP), release automation, and the per-project pricing flexibility that LaunchDarkly's structure provides for large enterprise accounts.

Migration effort: medium

Statsig uses different primitives: "gates" and "experiments" rather than just flags. Migrating requires mapping your LaunchDarkly flag types to Statsig's model, which adds a review step before you can do mechanical SDK replacement.

Best for: Teams leaving LaunchDarkly specifically because of pricing, who were actively using LaunchDarkly's experimentation features and want to keep them. If you weren't using experimentation, the Statsig bundle is overhead you're paying for unnecessarily.

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Switching to ConfigCat

ConfigCat is a viable LaunchDarkly replacement specifically if your team ships beyond the web: native mobile apps, game engines, or desktop software where offline flag caching matters.

What changes

Pricing: ConfigCat's model is unusual: it prices by the number of feature flags you create. The free tier allows 10 flags. The Pro plan ($110/month) caps you at 100 flags. Unlimited flags require the Smart plan at $325/month. This is a better deal than LaunchDarkly for small flag counts, but equivalent or more expensive once you're using flags aggressively across a real product.

SDK breadth: 20+ SDKs including iOS, Android, Flutter, Unity, Unreal Engine, C++, and Rust. The CDN-based delivery model means flags are cached locally and work offline, a meaningful advantage for mobile and game scenarios that LaunchDarkly's streaming model doesn't match.

TypeScript / Next.js: ConfigCat's TypeScript SDK has partial type inference. There's no dedicated Vue SDK and no first-class Next.js App Router support. For JS-heavy teams, this is a downgrade from LaunchDarkly's SDK.

What you give up

A/B experimentation, release automation, enterprise compliance features, and a better web/JS developer experience.

Migration effort: low to medium

The conceptual model is similar (flags, environments, targeting rules). SDK replacement is straightforward for supported languages. The flag-count pricing model means you may need to audit and trim flags before migrating to stay on a lower tier.

Best for: Teams leaving LaunchDarkly because of pricing who primarily need feature flags on mobile, game engines, or embedded platforms. Not a good fit for JS-first teams.

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Switching to Unleash (self-hosted)

Unleash is the right choice if the reason you're leaving LaunchDarkly isn't pricing per se, but data ownership. If you need flag evaluation to happen entirely within your own infrastructure, Unleash's open-source self-hosted version is the only production-ready option in this list.

What changes

Cost: The self-hosted OSS version is free to run. You pay for a server, a Postgres database, and the ops time to maintain it. The tradeoff is real: that's an ongoing engineering investment. Unleash Cloud solves the ops burden but introduces a $375/month floor (5-seat minimum at $75/seat), comparable to LaunchDarkly for small teams.

Control: Complete. Flag data never leaves your infrastructure. No vendor API calls at evaluation time. You own the schema, the backups, and the uptime SLA.

Environments: The open-source version supports a single environment. You need separate instances for dev, staging, and production, each with their own database.

What you give up

A managed service, experimentation features, mobile/native SDK depth, and the convenience of a hosted dashboard with audit logs and user management handled for you.

Migration effort: high

Self-hosting Unleash requires provisioning infrastructure, setting up the database, configuring environments, and handling upgrades. The SDK replacement is mechanical, but the operational setup is a real investment. Plan for a week of setup work minimum.

Best for: Teams in regulated industries or with strict data residency requirements that make a third-party SaaS flag platform a non-starter, and that have the infrastructure team to operate it.

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Switching to Flagsmith

Flagsmith is a simpler alternative for smaller teams who want to reduce costs without taking on the operational burden of self-hosting. It covers the core feature flag use cases and has a cloud option at reasonable pricing.

What changes

Pricing: $45/month (Start-Up) for 1M requests and 3 team members, or $100/month (Scale-Up) for 10M requests and 10 team members. Better than LaunchDarkly for small teams, but the team member cap becomes a friction point as you grow. Adding more than 10 people requires Enterprise pricing.

Features: Boolean flags, multi-variate flags, segments, percentage rollouts. No experimentation, no release automation, no enterprise compliance. The dashboard is straightforward with no TypeScript type inference or Next.js App Router support.

What you give up

LaunchDarkly's enterprise features, experimentation, SDK breadth, and the JS developer experience improvements that Supaship offers.

Migration effort: low

The conceptual model maps cleanly. SDK replacement is straightforward.

Best for: Small teams (under 10 people in the dashboard) that are price-sensitive and don't need experimentation or advanced TypeScript ergonomics.

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Which LaunchDarkly features are you actually using?

Before deciding, be honest about which LaunchDarkly features your team actively uses versus features you have access to but never touch.

Most teams using LaunchDarkly are in the top three rows. They're paying enterprise prices for enterprise capabilities they never use.

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Migrating from LaunchDarkly: what to expect

Regardless of which platform you choose, the migration playbook is the same:

Week 1: audit and recreate

• Export your flag list from LaunchDarkly
• Identify flags that are 100% rolled out and should be cleaned up before migrating (don't carry dead flags to the new platform)
• Recreate active flags in the new platform with matching targeting rules and environments

Week 2: parallel running

• Install the new SDK alongside LaunchDarkly
• Add the new evaluation calls next to existing LaunchDarkly calls and log any discrepancies
• Compare flag values for the same users across both platforms to verify parity

Week 3: cutover

• Replace all LaunchDarkly evaluation calls with the new SDK
• Remove LaunchDarkly SDK and API key configuration
• Verify in staging, then deploy to production

The total engineering investment is typically 3–5 days of focused work for a codebase of moderate size. The biggest variable is how many flags you have and how spread they are across your codebase.

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Ready to switch? Sign up for Supaship free · 1M events/month, unlimited projects, no credit card required. Pro plan is $30/month for your entire workspace.

Get started with your framework: Next.js · React · Vue · Node.js

More reading: LaunchDarkly vs Supaship (full comparison) · Best Feature Flag Platforms 2026