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SensorFlow is an open-source, self-hosted analytics project built around ClickHouse and SQL. Its author describes it as a narrower option for teams that want to operate their own event analytics stack and query data directly—not as a one-for-one replacement for every part of PostHog.
How SensorFlow’s stated architecture works
The project describes a pipeline that sends events from an SDK to a Go collector, stores them in ClickHouse, and makes them available for SQL analysis or dashboards in Apache Superset. That puts the database and the operating environment under your control, but it also means your team is responsible for running them.
- Collect: an application sends events through an SDK.
- Ingest: a Go collector receives those events.
- Store: ClickHouse holds the event data.
- Analyze: users query the data with SQL or use Apache Superset for dashboards.
The architecture and capabilities here are those described by SensorFlow’s project article and official site, not independently validated performance or deployment results. See the project article and official SensorFlow site.
What “self-hosted” means for your team
SensorFlow is presented as self-hosted only. You supply and operate the infrastructure; the license does not cover hosting. The official site says users remain responsible for access controls, backups, and compliance configuration, and that setup time depends on the environment.
- You need infrastructure capable of running the collector, ClickHouse, and the analysis layer.
- Your team owns ongoing operations, including access management and backups.
- You must configure compliance controls for your own environment and requirements.
- Infrastructure costs are separate from the product license.
The reviewed sources do not establish a recommended server configuration, deployment time, or total cost of ownership.
Where SensorFlow differs from PostHog
The project positions SensorFlow as SQL-first and ClickHouse-native, while describing PostHog as a broader product suite. Its article says SensorFlow does not include session replay or feature flags; it lists replay, flags, and experiments among PostHog’s offerings. The same article characterizes PostHog’s pricing as usage-based, compared with SensorFlow’s annual license and separately managed infrastructure.
| Dimension | SensorFlow, as described by its sources | PostHog, as described by the project article |
|---|---|---|
| Deployment | Self-hosted only | Cloud or self-hosted |
| Analysis approach | SQL-first, using ClickHouse and Superset | Product-UI-first |
| Suite features cited | No session replay or feature flags | Session replay, feature flags, and experiments |
| Pricing model | Annual license; infrastructure is separate | Usage-based, according to the project article |
| Operations | You operate the infrastructure and manage access, backups, and compliance configuration | The project article does not specify a comparable operational-responsibility breakdown |
This is a comparison of the claims made in the project article and official product page, not an independent feature audit. If you depend on replay, flags, or experiments, the sources do not support treating SensorFlow as a substitute for those PostHog functions.
Demo and production ingestion are different stages
SensorFlow’s article describes a local demo installation, while its official site distinguishes that license-free demo from production SDK ingestion. The sources say real SDK ingestion requires obtaining a license and running an activation step. Do not assume that a successful local demo means production event collection is enabled.
The project article says the collector is intended to be wire-compatible with Sensors Data SDKs. That is the author’s compatibility guidance, not an independently verified guarantee. Before reusing an SDK, check its version, encryption behavior, identity model, property types, and timestamp handling against your environment.
License price and promotion details
Pricing is presented as an annual license, with infrastructure costs separate. The SensorFlow article in 2026 gives a list price of $699 per year, a $349 first-order discount, and a first month free. The official site, accessed October 7, 2026, displayed an annual plan starting at USD 349, a first-month-free trial, and a 50% discount on the first purchase. These are vendor-stated prices and promotions that may change; check the official site for current terms.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Who should consider SensorFlow
SensorFlow may suit a team that values self-hosting, wants an SQL-oriented workflow over event data, and is prepared to operate the supporting infrastructure. It is a less natural fit if the team wants a hosted service, needs a broader analytics suite, or does not want responsibility for backups, access controls, and compliance setup.
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The reviewed sources do not establish independent benchmarks, production scale, customer outcomes, security superiority, or cost savings. Treat those as questions to validate in your own environment rather than assumed benefits of the architecture.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
