feat vs Flagsmith
feat
feat.so
Flagsmith
flagsmith.comSide by side
| Figure | feat | Flagsmith |
|---|---|---|
| Price from | $19/mo | $40/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | Yes |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 6 | 8 |
| Spec score · Feature Flag Software | 9.3 (#2) | 9.1 (#4) |
| Company | feat labs, inc. is based in India and was founded by Vishnu Mohanan. | The site identifies Bullet Train Ltd. as the company behind Flagsmith. |
| Experiments | A built-in statistical engine, variant tracking, metric integrations, and auto-advance gradual rollouts are listed as coming in Q3 2026. | Multivariate flags support percentage splits across variations for A/B and multivariate testing. |
| Feature flags | Flags support boolean, string, number, and JSON values. | Flags can be boolean or multivariate and decouple deployment from release. |
| Headquarters | India | London, England |
| Integrations | Pluggable metric sources include Segment, Mixpanel, PostHog, and custom sources; Slack integration is listed as coming in Q3 2026. | Native integrations include Amplitude, Datadog, Dynatrace, GitHub, GitLab, Grafana, Jira, Mixpanel, New Relic, Segment, Sentry, Slack, Terraform and warehouse tools. |
| OpenFeature | OpenFeature providers are available for JavaScript and Dart, while Go, Python, and Ruby providers are planned. | Flagsmith provides an OpenFeature provider for SaaS, on-premises and private-cloud deployments. |
| Product | feat is a hosted feature-flag platform for early engineering teams. | Flagsmith manages feature flags and remote configuration for web, mobile, and server-side applications. |
| Rollouts | Sticky percentage rollouts keep the same user, device, or organization on the same variation across requests and sessions. | Flags can target environments, individual users, user segments, or a percentage of users for gradual releases. |
| Security | Customer-facing endpoints use TLS 1.2+ and HSTS, with managed-service encryption at rest for Postgres, R2, and KV. | The maker states that Flagsmith is SOC 2 Type 2 accredited and that its self-hosted instance supports HIPAA, FedRAMP, and ISO 27001. |
| Support | Free includes community support; Starter, Growth, and Scale list email response targets of 48 hours, 24 hours, and 8 hours respectively. | Start-Up includes email technical support; Scale-Up includes priority email and chat technical support; Enterprise includes real-time chat support with Slack optional. |
| What it does | feat is a hosted feature-flag platform for engineering and product teams. | Flagsmith manages feature flags and remote configuration for web, mobile and server-side applications. |
Plans
feat
- FreeFree
- Starter$19 a month
- Growth$49 a month
- Scale$149 a month
- Elastic$299 a month
- EnterprisePriced on request
Flagsmith
- FreeFree
- Start-Up$40 a month
- Start-Up (annual billing)$40 a month
- Start-Up (monthly billing)$45 a month
- Scale-Up$250 a month
- Scale-Up (annual billing)$250 a month
- Scale-Up (monthly billing)$300 a month
- EnterprisePriced on request
In their own words
feat
feat is a hosted feature-flag platform for early engineering teams. Server SDKs evaluate flags locally, so each flag read does not require a network call; changes stream to connected SDKs in under a second. Targeting rules combine conditions across users, devices, organizations, sessions, and requests using AND and OR. 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, with OpenFeature providers for web, Node.js, and Dart. Metric sources include Segment, Mixpanel, PostHog, and custom sources. The Free plan costs nothing and includes 7,500 MAU, 100 server connections, two projects, unlimited environments, and unlimited flags. Starter costs $19 a month, with annual billing listed at $15/mo. Built-in statistical experiments, variant tracking, metric integrations, auto-advance gradual rollouts, and Slack integration are listed as coming in Q3 2026, not current features.
Flagsmith
Flagsmith manages feature flags and remote configuration for web, mobile, and server-side applications. Teams can target releases by environment, individual user, segment, or percentage, and split users across variations for A/B and multivariate tests. Remote configuration lets teams change properties such as text, colors, and behavior without deploying new code. Deployment options include hosted cloud, private cloud, and self-hosted. Its listed integrations include Amplitude, Datadog, GitHub, GitLab, Grafana, Jira, Mixpanel, OpenFeature, Segment, Sentry, Slack, and Terraform; environment-level webhooks can send events to a team's infrastructure. The maker says core feature-flag functionality is open source and most of the product uses the BSD-3 licence. The Free plan includes 50,000 monthly requests and one team member; after exceeding the request limit, users have seven days to upgrade before action is taken. Paid plans start at $40 a month, billed 12 months paid up front. Platforms include Android, API, iOS, Linux, macOS, self-hosted, web, and Windows.