ConfigCat vs LaunchDarkly
An independent, review-free comparison compiled by the SaaSTracker editorial team. Both products are profiled in full, and neither can pay for placement here.
Still shortlisting? Browse the best in Product Analytics & Session Replay for every option we track, with award winners called out.
The short answer
Both sides assessedConfigCat compared with LaunchDarkly
Both give unlimited seats, but they meter different things: LaunchDarkly counts client-side monthly active users above its free 1,000 and bills $8.33 per thousand on Foundation, while ConfigCat counts only config downloads and a busy consumer app can stay on Pro at $110 a month. LaunchDarkly brings experimentation statistics, session replay, and observability that ConfigCat does not attempt, plus unlimited flags on its free tier. Choose ConfigCat for predictable flag billing and SSO without an enterprise contract; choose LaunchDarkly if you want measurement and release control from one vendor.
LaunchDarkly compared with ConfigCat
ConfigCat is a narrower, flat-priced flag service from a small bootstrapped Budapest company. Both give unlimited seats, but ConfigCat meters config downloads rather than client-side monthly active users, so a consumer app with a large audience can sit on its $110 a month Pro plan where LaunchDarkly's Foundation tier would bill $8.33 per thousand users. LaunchDarkly brings experimentation, session replay, and observability that ConfigCat does not attempt, plus unlimited flags on the free tier. Teams that want measurement and release control in one vendor take LaunchDarkly; teams that want predictable flag billing and SSO without an Enterprise contract take ConfigCat.
Choose ConfigCat if
Small and mid-sized development teams who want a hosted feature flag service with flat, predictable billing, where adding engineers, product managers, or users never changes the price, and who need SSO and a clean ISO 27001 answer without paying for an enterprise tier to get them.
Choose LaunchDarkly if
Engineering teams who want feature management, experimentation, and observability from one vendor with unlimited seats, and small teams who can genuinely live inside the free Developer tier while retaining a credible upgrade path as the company grows into enterprise controls.
Side by side
13 attributes| Attribute | ConfigCat | LaunchDarkly |
|---|---|---|
| Category | Product Analytics | Product Analytics |
| Starting price | $0 (Forever Free), then $110 per month billed annually or $120 billed monthly (Pro) | $0 (Developer), then pay-as-you-go from $8.33 per 1,000 client-side monthly active users per month billed yearly (Foundation) |
| Pricing model | Freemium subscription with flat plan prices, metered on config JSON downloads and network traffic, with unlimited seats, monthly active users, and service connections on every plan. Extra quota is sold in fixed blocks, and a Dedicated plan covers private cloud or on-premise deployment. | Freemium and pay-as-you-go, metered on client-side monthly active users and service connections with unlimited seats on all plans, plus usage allowances for session replays, errors, logs, traces, and AI runs. Enterprise is quoted. |
| Free plan | Forever Free, no card: 5 million config JSON downloads and 20 GB of traffic a month, 10 flags and 2 environments per product across 2 products, 2 segments, unlimited seats, SSO and SAML, 1 webhook, and 7-day audit log retention. | Developer is free forever with unlimited feature flags, unlimited seats, 30 SDKs, 1,000 client-side monthly active users, 100,000 experimentation monthly active users, 5,000 session replays, 5,000 errors, 10 million logs and traces, 5,000 AI runs, and 5 service connections. |
| Free trial | No | 14 days on Foundation; Enterprise trials by request |
| Best for | Small and mid-sized development teams who want a hosted feature flag service with flat, predictable billing, where adding engineers, product managers, or users never changes the price, and who need SSO and a clean ISO 27001 answer without paying for an enterprise tier to get them. | Engineering teams who want feature management, experimentation, and observability from one vendor with unlimited seats, and small teams who can genuinely live inside the free Developer tier while retaining a credible upgrade path as the company grows into enterprise controls. |
| Setup time | Under an hour to a first flag in production: sign up with an email, create a flag, install the SDK for your language with the environment's SDK key, and wrap a code path. Choosing polling intervals and, for EU customers, setting the dataGovernance option in every SDK to match the dashboard are the two decisions worth getting right on day one. | Under an hour for a first flag. Create a project, install an SDK, wrap a code path, ship. The observability half takes longer because instrumenting logs, traces, and replay properly means touching more of the application, and the Relay Proxy is a separate deployment decision. |
| Learning curve | Low. The model is products, environments, configs, and flags, with targeting rules, segments, and percentage options on top, and the dashboard is usable by product managers as well as developers. The concept that trips people up is that updates arrive on the next poll rather than instantly, which is a tradeoff between speed and download count that you control. | Low to start and steep at the edges. Basic flagging is immediately intuitive. Contexts and context kinds take a while to model well, and modelling them badly early produces targeting rules that are painful to unpick later. The experimentation and observability surfaces each carry their own concepts on top. |
| Platforms | JavaScript, React, Angular, and Vue, Node.js, Bun, Deno, and Cloudflare Workers, .NET and ASP.NET Core, Java and Spring Boot, Go, PHP and Laravel, Python, Ruby, Elixir, Android and Kotlin Multiplatform, iOS and macOS (Swift), Flutter and Dart, React Native, C++ and Rust, Unity and Unreal Engine, Chromium extension, OpenFeature providers, ConfigCat Proxy | Java, Python, Node, Go, Ruby, Rust, PHP, .NET, JavaScript and React, iOS, Android, Flutter, Cloudflare, Vercel, Akamai, and Fastly edge runtimes, OpenFeature providers, Relay Proxy |
| Compliance | ISO/IEC 27001:2022, GDPR | SOC 2, GDPR, Confirm the current certification list including ISO 27001 and HIPAA with the vendor during procurement |
| Founded | 2018 | 2014 |
| Headquarters | Budapest, Hungary | Oakland, California, United States |
| Ownership | Bootstrapped, privately held (legal entity ConfigCat Kft) | Venture-backed, privately held |
Strengths and limitations
ConfigCat
Strengths
- Unlimited seats, monthly active users, service connections, and flag reads on every plan, so neither headcount nor user growth changes the bill.
- SSO, SAML 2.0, SCIM provisioning, and two factor authentication appear on the pricing table for every plan including free, where Flagsmith gates SSO at $250 a month and LaunchDarkly gates SCIM behind Enterprise.
- Local evaluation in every SDK means no per-check network call, no user data uploaded for targeting, and cached values that keep working if the CDN is unreachable.
- Broad SDK coverage, from Cloudflare Workers, Bun, and Deno to Unity, Unreal Engine, C++, and Elixir, with all SDKs open source on GitHub.
Limitations
- No analytics and no experiment statistics. Percentage options split traffic and integrations send evaluations to Amplitude, Mixpanel, Google Analytics, or Segment, but ConfigCat never tells you whether a variation won.
- Tight flag and environment limits on the cheaper plans: 10 flags and 2 environments per product on Free, 100 flags and 3 environments on Pro, so structure rather than traffic forces the upgrade to $325 a month.
- Approval flow and scheduled changes only shipped on August 27, 2026, work only on V2 configs, and the pricing page does not say which plans include them.
- The service itself is closed source; the only self-hosted path is the commercial on-premise edition priced with the Dedicated plan at $4,500 a month billed annually, not a free community build like Flagsmith or Unleash.
LaunchDarkly
Strengths
- Unlimited seats on every plan including free, so access is never rationed and a growing team does not create a linear cost increase.
- The free Developer tier is extraordinarily generous: unlimited flags, 100,000 experimentation monthly active users, 5,000 replays, 5,000 errors, and 10 million logs and traces.
- Multi-context targeting is more expressive than the single user identity model used by most competitors and fits B2B products naturally.
- The most complete SDK and edge coverage in the category, spanning 30 SDKs plus Cloudflare, Vercel, Akamai, and Fastly edge runtimes and OpenFeature providers.
Limitations
- The Enterprise cliff is steep and abrupt: approvals, custom roles, teams, scheduling, SCIM, and retention beyond 100 days all require a sales-led contract.
- Statistical methodology is less transparent than GrowthBook's or Statsig's; frequentist and Bayesian intervals plus bandits are offered, but sequential testing and variance reduction are not documented to the same depth.
- No self-hosting at any accessible tier, and the Relay Proxy is a connection optimisation rather than a sovereignty answer.
- The observability, replay, and error products arrived through the April 2025 Highlight.io acquisition and are young relative to the flag product, so they should be piloted rather than assumed.
Pricing compared
ConfigCat
Freemium subscription with flat plan prices, metered on config JSON downloads and network traffic, with unlimited seats, monthly active users, and service connections on every plan. Extra quota is sold in fixed blocks, and a Dedicated plan covers private cloud or on-premise deployment.
- Forever Free$0
- Pro$110
- Smart$325
- Enterprise$900
- Dedicated$4,500
ConfigCat's pricing is easy to model once you stop thinking about users. A backend service polling once a minute uses about 43,000 downloads a month per running instance, so ten instances sit comfortably inside the free 5 million. Browser and mobile clients are the variable: if each of 100,000 monthly users triggers ten downloads, that is a million downloads, still inside Free, and 1 million users on the same pattern fits Pro's 25 million with room to spare. For most small businesses the download meter will never bind; the flag and environment limits will. Ten flags per product on Free and 100 on Pro push a flag-heavy team to Smart at $325 a month well before traffic does. Against the neighbors the arithmetic is simple: Flagsmith's Start-Up is $40 a month billed yearly for three seats, cheaper for a small team that does not need SSO; Unleash is $75 per seat, so ConfigCat Pro is cheaper for any team of two or more; LaunchDarkly's free tier gives more flags but meters client-side monthly active users above 1,000, which ConfigCat never does. The real value is SSO, SAML, and SCIM at no extra cost, which elsewhere costs $250 a month or an enterprise contract.
LaunchDarkly
Freemium and pay-as-you-go, metered on client-side monthly active users and service connections with unlimited seats on all plans, plus usage allowances for session replays, errors, logs, traces, and AI runs. Enterprise is quoted.
- Developer$0
- FoundationPay as you go
- EnterpriseCustom
The free Developer tier is the best value in this entire category and it is not close: unlimited flags, unlimited seats, 100,000 experimentation monthly active users, plus replay, errors, logs, and traces, for nothing. Beyond it the arithmetic is legible. At 10,000 client-side monthly active users, Foundation is roughly $83 a month at $8.33 per thousand, plus service connections beyond the five included. At 100,000 client-side monthly active users it is roughly $833 a month on the same basis, before observability overage. Compare that with Unleash at $75 per seat, where a ten-person team pays $750 regardless of scale, and LaunchDarkly is cheaper for large teams on small products and more expensive for small teams on large ones. The real value question is not the meter, it is the Enterprise cliff: approvals, custom roles, SCIM, and long retention are not purchasable with a card, so a company that needs governance loses the self-serve pricing advantage entirely and enters a negotiation with a $3B vendor.
Editorial verdict on each
ConfigCat
ConfigCat is the flag service to pick if you want billing that ignores your team size and your user count. Unlimited seats and monthly active users on every plan, a download meter that local evaluation keeps small, SSO, SAML, and SCIM without an enterprise tier, an EU-only CDN, and ISO 27001 add up to a strong offer from a small, bootstrapped Budapest company that keeps shipping. Pro at $110 a month billed annually is fair for a team of any size, and for teams of three or more it undercuts Unleash's per-seat model outright. Be clear about what it is not. It is not product analytics despite the shelf it sits on, and it will not tell you whether an experiment won; pair it with Mixpanel, Amplitude, or PostHog for that. Watch the structural limits more than the traffic ones, because 10 flags on Free and 100 on Pro push a busy codebase to Smart at $325 before downloads ever matter, and if you need a free self-hosted build or long-established approval workflows, Flagsmith and Unleash are the better fits.
Read the full ConfigCat profileLaunchDarkly
LaunchDarkly spent a decade as the expensive enterprise answer and then shipped the most generous free tier in its category, which makes it worth evaluating even if you assumed it was out of reach. Unlimited seats on every plan, unlimited flags, 100,000 experimentation monthly active users, and real observability allowances at zero cost is a serious offer, and the pay-as-you-go Foundation tier is easy to forecast at roughly $83 a month per ten thousand client-side monthly active users. The multi-context targeting model and the SDK breadth are the best in the category, and the Highlight.io integration produces genuinely useful workflows that flag-only vendors cannot match. The reservations are structural rather than cosmetic. There is no self-hosting, the statistical methodology is less transparent than its open source rivals, and the moment you need approvals, custom roles, SCIM, or long retention you leave self-serve pricing and enter a negotiation. Start on the free tier, model your client-side monthly active users honestly, and know in advance where the Enterprise cliff sits relative to your compliance roadmap.
Read the full LaunchDarkly profileConfigCat profile last reviewed 2026-09-26; LaunchDarkly last reviewed 2026-08-22. Pricing is compiled from public sources and can change without notice. See our methodology.
The best in Product Analytics & Session Replay
15 trackedProduct analytics tools track what users do inside an application, funnels, retention, feature adoption, and session replay, so teams can see where activation breaks rather than guessing.
Product analytics that kept buying the rest of the stack: experiments, session replay, and a CDP under one roof, with 2 million free events a month.
A free plan covering one million events a month with unlimited seats means a 10,000 user product pays Mixpanel nothing for genuinely deep analytics.
Relaunched in 2025 around autocapture, autoconfiguration, and Ask AI, with a 2026 LLM Acquisition report, Kissmetrics is the roster's genuine comeback story.
Agent Analytics, generally available in December 2025, measures how AI agents behave inside products, a capability nothing else in this roster ships.
Autocapture records every interaction from one snippet in under an hour, so teams define events after the fact instead of instrumenting anything first.
Frequently asked questions
6 questionsWhat is the difference between ConfigCat and LaunchDarkly?
Both give unlimited seats, but they meter different things: LaunchDarkly counts client-side monthly active users above its free 1,000 and bills $8.33 per thousand on Foundation, while ConfigCat counts only config downloads and a busy consumer app can stay on Pro at $110 a month. LaunchDarkly brings experimentation statistics, session replay, and observability that ConfigCat does not attempt, plus unlimited flags on its free tier. Choose ConfigCat for predictable flag billing and SSO without an enterprise contract; choose LaunchDarkly if you want measurement and release control from one vendor.
Is ConfigCat or LaunchDarkly cheaper?
ConfigCat starts at $0 (Forever Free), then $110 per month billed annually or $120 billed monthly (Pro). LaunchDarkly starts at $0 (Developer), then pay-as-you-go from $8.33 per 1,000 client-side monthly active users per month billed yearly (Foundation). The billing models differ, so the entry price is rarely the whole cost. ConfigCat pricing model: Freemium subscription with flat plan prices, metered on config JSON downloads and network traffic, with unlimited seats, monthly active users, and service connections on every plan. LaunchDarkly pricing model: Freemium and pay-as-you-go, metered on client-side monthly active users and service connections with unlimited seats on all plans, plus usage allowances for session replays, errors, logs, traces, and AI runs. Enterprise is quoted.
Does ConfigCat or LaunchDarkly have a free plan?
ConfigCat has a free plan. Forever Free, no card: 5 million config JSON downloads and 20 GB of traffic a month, 10 flags and 2 environments per product across 2 products, 2 segments, unlimited seats, SSO and SAML, 1 webhook, and 7-day audit log retention. LaunchDarkly has a free plan. Developer is free forever with unlimited feature flags, unlimited seats, 30 SDKs, 1,000 client-side monthly active users, 100,000 experimentation monthly active users, 5,000 session replays, 5,000 errors, 10 million logs and traces, 5,000 AI runs, and 5 service connections. Trial terms: 14 days on Foundation; Enterprise trials by request.
Who should choose ConfigCat?
Small and mid-sized development teams who want a hosted feature flag service with flat, predictable billing, where adding engineers, product managers, or users never changes the price, and who need SSO and a clean ISO 27001 answer without paying for an enterprise tier to get them.
Who should choose LaunchDarkly?
Engineering teams who want feature management, experimentation, and observability from one vendor with unlimited seats, and small teams who can genuinely live inside the free Developer tier while retaining a credible upgrade path as the company grows into enterprise controls.
What are the best alternatives to ConfigCat and LaunchDarkly?
SaaSTracker profiles 15 products in Product Analytics & Session Replay. The Summer 2026 awards in the category went to Amplitude (Category Leader), Mixpanel (Best Value), Kissmetrics (Momentum). Every profile is compiled from primary sources, so a shortlist can be built from pricing, limitations, and fit rather than from star ratings.
