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Umami and SensorFlow solve different starting problems. Umami is a website and product analytics application: you add a site, install its tracking script, and read reports in its interface. SensorFlow is a self-hosted event pipeline: compatible Sensors Data SDKs send events to SensorFlow, which stores them in ClickHouse for SQL queries and Apache Superset dashboards. If you want a finished analytics application, choose Umami. If you already run Sensors Data SDK instrumentation and want the event rows in a database you operate, SensorFlow is the one to evaluate. The rest of this article explains where that line falls and what each option asks of your team.
Comparison at a glance
The table below reflects each project’s current public documentation as checked in early October 2026. It describes scope and responsibilities, not measured performance.
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| Decision axis | Umami | SensorFlow |
|---|---|---|
| Starting job | Website and product analytics with a ready tracking and reporting workflow | Routing compatible Sensors Data SDK events into infrastructure your team operates |
| Collection | Umami tracking script and documented event and API workflows | Sensors Data SDKs pointed at SensorFlow’s collector; exact SDK and event semantics must be validated for your versions |
| Storage and analysis | Umami’s own application, available as managed cloud or self-hosted | ClickHouse storage, SQL analysis, and Apache Superset dashboards |
| Deployment responsibility | Cloud hosting is managed by Umami; self-hosting means operating its documented application and database stack | Your team operates ingestion, ClickHouse, Superset, access control, backups, scaling, and upgrades |
| Best fit | A site owner or product team that wants traffic and conversion reporting without building a data stack | An engineering or data team with compatible SDK instrumentation and a requirement to own ClickHouse event data |
| Check before choosing | Current feature and plan details, and whether you need managed or self-hosted deployment | Production license, SDK compatibility, identity and timestamp handling, capacity, and operating readiness |
Sources: Umami documentation, Umami repository, SensorFlow quick start, and SensorFlow architecture guidance.
The Tool Desk
Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Umami: an application for website and product analytics
Umami’s current documentation describes version 3 as an open-source web and product analytics platform. Its listed features cover:
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- Acquisition reporting: pageviews, visitors, referrers, locations, devices, and campaigns
- Custom events and behavior analysis, goals, and funnels
- Attribution, retention, and revenue reporting
- Dashboards, teams, and sharing
- API integrations
According to the Umami introduction, collection avoids cookies, cross-site tracking, and automatic collection of personal data. Any information the site operator deliberately sends remains the operator’s responsibility.
Umami is offered two ways. Umami Cloud is managed for you. Self-hosting uses the project’s own application: the Umami repository documents a source setup based on Node.js and PostgreSQL, and it also documents Docker installation. Check the version-specific documentation before you rely on any particular installation detail, because setup steps can change between releases.
Umami also exposes an API for both self-hosted and cloud installations. Cloud API use is documented with an API key. The Umami API documentation covers the endpoints.
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1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesSensorFlow: a pipeline that lands SDK events in ClickHouse
SensorFlow’s path is official Sensors Data SDKs, then SensorFlow, then ClickHouse, then Apache Superset. The value it documents is keeping event details on infrastructure you manage, then analyzing them with SQL and dashboards. SensorFlow does not provide a tracking script or a finished reporting front end of the kind Umami offers. Its job starts where your SDK already sends data.
What the quick start validates
The SensorFlow quick start demonstrates a three-part check. Use it as the template for your own acceptance test:
- Send an event from an official Sensors Data SDK to the SensorFlow collector.
- Confirm that the event appears as a stored row in ClickHouse.
- Run a query against that data in Apache Superset.
The guide also cautions that SDK protocol compatibility does not mean the third-party SDK vendor endorses SensorFlow. It advises testing the SDK versions and extensions you actually use.
Licensing
SensorFlow’s documentation describes a local demo that runs without a license. Production ingestion of real SDK payloads requires a separate SensorFlow license. The SensorFlow homepage describes the project as Apache-2.0 and self-hosted. These are two different statements: public source availability does not mean every production deployment is license-free. Pricing and promotions shown on the homepage are time-sensitive, so confirm them directly with the vendor before budgeting.
Starting hardware
SensorFlow’s quick-start documentation, as checked in early October 2026, gives these starting figures:
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| Setup | CPU cores | Memory | SSD storage |
|---|---|---|---|
| Minimum test setup | 4 | 8 GB | 100 GB |
| Production starting point | 8 | 16 GB | 500 GB |
Actual requirements depend on event volume, retention period, query load, and architecture, so treat these as starting points rather than sizing guarantees. Storage deserves deliberate choice. The sources do not name a universal drive model, so match the SSD to your server’s interface, write endurance, capacity, and workload, and to your budget.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Who should choose which
- Choose Umami if the main job is understanding website traffic and conversions through a prepared interface, and either Umami Cloud or its self-hosted application fits your team.
- Evaluate SensorFlow if your team already uses Sensors Data SDKs, wants event details stored in ClickHouse that it owns, and has the capacity to operate the collection, database, and BI layers.
- Avoid SensorFlow for appeal alone. If your team lacks operating capacity, or needs a turnkey analytics application, ClickHouse is not a substitute for the reporting you would otherwise get from Umami. Verify the full workflow, including the reports you need, before committing.
Operating a self-hosted SensorFlow stack
Self-hosting moves operational work to your team. SensorFlow’s architecture guidance names reliability, security, scaling, backups, and upgrades as your responsibilities. It also states that self-hosting alone does not prove that no data leaves your network, and does not establish compliance. Dependencies and integrations must be checked separately.
Migrating existing SDK instrumentation
If you plan to move events from an existing Sensors Data SDK setup into SensorFlow, run a staged test before switching production traffic:
- Pin the exact SDK versions and extensions you use, and test those versions rather than assuming compatibility.
- Send representative anonymous, login, and business events through the collector.
- Check identity joins between anonymous and logged-in users.
- Check timestamps and property types in the stored rows.
- Check how retries and duplicates are handled, and whether duplicate rows appear.
- Confirm the events in ClickHouse, then confirm that the Superset dashboards display them correctly.
- Rehearse backups and a rollback path before you cut over.
A successful HTTP response from the collector shows only that the request was accepted. It does not prove that the event was persisted or that it matches the meaning of the event in your existing system.
What the evidence does and does not show
- The side-by-side comparison is published by SensorFlow’s team. It clarifies SensorFlow’s intended positioning, but it is vendor material, not independent comparison. Product claims in this article rest on each project’s own documentation.
- No independent benchmark of Umami against SensorFlow was found, and this article does not report performance results for either product.
- SensorFlow’s homepage performance and event counters are illustrative and should not be read as customer results.
- Features, licensing, pricing, promotions, and supported versions change. Confirm them on the current pages of each project before you decide.
Primary references: Umami documentation, Umami repository, SensorFlow quick start, SensorFlow architecture guidance, and SensorFlow homepage.
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