Traceflair vs PostHog
Both are self-hostable. But Traceflair delivers heatmaps, form analytics, and session replay in a 9x smaller SDK — without needing ClickHouse or Kafka.
Choose Traceflair if:
- You need heatmaps and form analytics built in
- You want lightweight self-hosting (PostgreSQL + Redis only)
- SDK performance matters (under 5KB gzipped)
- You want pixel-perfect session replay with 44 capture modules
- You prefer fixed, predictable pricing
Choose PostHog if:
- You need product analytics with feature flags and A/B testing
- You want data warehouse queries and a wide integration ecosystem
- You need a generous free tier (1M events/month)
- You have the infrastructure for ClickHouse + Kafka self-hosting
Feature-by-Feature Comparison
| Feature | Traceflair | PostHog |
|---|---|---|
| Session Replay | 44 capture modules, pixel-perfect | Basic session recording |
| Heatmaps | Click, move, scroll | Not available |
| Form Analytics | Field-level tracking, hesitation, drop-off | Not available |
| Product Analytics | Event tracking, funnels, segmentation | Full product analytics suite |
| Feature Flags | Not available | Built-in feature flags & rollouts |
| A/B Testing | Not available | Built-in experimentation |
| Error Tracking | JS errors, rejections, network failures | Basic error tracking |
| Web Vitals | LCP, CLS, INP monitoring | Not built in |
| Funnels | Multi-step conversion funnels | Advanced funnel analysis |
| Surveys & Feedback | In-app widgets, NPS | Built-in surveys |
| Data Warehouse | Not available | SQL queries, data warehouse |
| Self-Hosting | Docker — PostgreSQL + Redis | ClickHouse + Kafka + Redis + PostgreSQL |
| SDK Size | <5KB gzipped | ~45KB |
| Plugin System | Extensible plugin architecture | Apps & integrations ecosystem |
| Click Analytics | Rage clicks, dead clicks, click maps | Autocapture clicks |
| Open Source | No — proprietary, self-hostable | Yes — MIT licensed |
| Free Tier | 10K events/mo, 7-day retention | 1M events/mo (generous) |
SDK Size Matters
Every kilobyte affects page load. PostHog's SDK is feature-rich but heavy. Traceflair's modular architecture keeps the core tiny while plugins load on demand.
Traceflair (gzipped)
PostHog script
Smaller
Privacy & Self-Hosting
Both Traceflair and PostHog are self-hostable — but the self-hosting experience is very different.
Traceflair
- 3 consent modes (opt-in, opt-out, implied)
- Automatic PII detection and masking
- IP anonymization built in
- Self-hosting: single docker-compose up
- Requires only PostgreSQL + Redis
- Runs on 2GB RAM / 1 CPU
PostHog
- Open source, self-hostable (MIT license)
- Cookieless tracking option
- Requires ClickHouse + Kafka + Redis + PostgreSQL
- Recommended minimum: 8GB RAM, 4 CPUs
- Complex infrastructure to maintain
- Steeper learning curve for operations
Pricing Comparison
| Tier | Traceflair | PostHog |
|---|---|---|
| Free | $0 — 10K events/mo | $0 — 1M events/mo |
| Starter | $29/mo — 500K events | Usage-based (~$0.000225/event) |
| Business | $79/mo — 1M events, 90-day retention | Usage-based (volume discounts) |
| Enterprise | Custom — unlimited, 365-day retention | Custom pricing |
| Pricing Model | Fixed tiers — predictable billing | Usage-based — can spike unexpectedly |
| All Features | All features included in every tier | Each product billed separately |
Migrate in Under 5 Minutes
Switching from PostHog is straightforward. No data migration needed.
Remove PostHog
Remove the PostHog script tag or uninstall the npm package.
Add Traceflair
Add the Traceflair script tag or install via npm.
Start Analyzing
Data starts flowing immediately. Heatmaps and form analytics work out of the box.
Frequently Asked Questions
Both are self-hostable analytics platforms. PostHog is open source (MIT-licensed). Traceflair focuses on session replay, heatmaps, and form analytics with a sub-5KB SDK. PostHog focuses on product analytics, feature flags, and A/B testing but requires ClickHouse, Kafka, and Redis for self-hosting.
Yes. PostHog is MIT-licensed and fully open source. Traceflair is not open source but is fully self-hostable. Both can be self-hosted. The key difference is infrastructure complexity: PostHog requires ClickHouse + Kafka + Redis, while Traceflair runs with just PostgreSQL + Redis via a single Docker Compose file.
PostHog does not offer heatmaps or form analytics. Traceflair includes click, move, and scroll heatmaps plus field-level form analytics with hesitation and drop-off tracking built in.
Traceflair's core SDK is under 5KB gzipped — roughly 9x smaller than PostHog's ~45KB script. Traceflair plugins are tree-shakeable so you only load what you use.
PostHog offers a generous free tier of 1M events/month, then charges usage-based pricing. Traceflair offers fixed tiers starting at $29/month for 500K events with all features included. For predictable budgets, Traceflair is simpler; for very high volumes with minimal features, PostHog's free tier may suffice.
Yes. Both are fully self-hostable. Traceflair requires PostgreSQL + Redis and runs via a single docker-compose up command. PostHog self-hosting requires ClickHouse, Kafka, Redis, PostgreSQL, and significant infrastructure resources — recommended minimum 8GB RAM and 4 CPUs.
Compare Traceflair with Other Tools
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