Should you build your own Amplitude?
Build a bounded event explorer for funnels, cohorts, and retention on one product
A consolation build is possible, but the paid product's decisive value sits outside a solo rebuild. For Amplitude, build a bounded event explorer for funnels, cohorts, and retention on one product. The hard boundary is behavioral data platform, experimentation, identity, governance, and scale, plus data pipeline reliability and analytical depth.
ENOriginal research content in English. Original prompt preserved in English.
Build a closest honest personal substitute for Amplitude in an empty repository.
Use Next.js 15, TypeScript, ClickHouse, PostgreSQL, and Docker Compose; do not offer alternative stacks.
The core loop is: collect privacy-conscious first-party events, answer a small set of product questions with funnels, cohorts, and retention views, and retain raw data under the owner's control.
Make the first run work locally with one documented command.
Store all user data locally by default and make export straightforward.
Put secrets in .env, ship .env.example, and never commit credentials.
Ship a lightweight browser SDK for page views and explicit custom events.
Create projects, API keys, environments, event names, and a documented event schema.
Ingest idempotently, filter obvious bots, truncate IP data, and avoid fingerprinting.
Build dashboards for visitors, sessions, funnels, retention, sources, pages, and events.
Expose filters by date, environment, device, country, referrer, and selected properties.
Add retention controls, raw-event export, deletion, health checks, and backup instructions.
Include clear empty, loading, success, and recoverable error states.
Add input validation, safe filenames, and graceful handling of unavailable APIs.
Write focused tests for the core transformation and one end-to-end happy path.
Create a README with setup, architecture, permissions, data location, and backup steps.
Do not add accounts, billing, telemetry, analytics, or a hosted control plane.
Do not claim to reproduce proprietary data, network liquidity, regulated access, or frontier infrastructure.
Deliberately leave out cross-site identity graphs.
Deliberately leave out session replay and automatic DOM capture.
Deliberately leave out warehouse-scale reverse ETL and enterprise governance.
Finish by running the tests and listing the exact commands used.The prompt opens pre-filled in your agent. Review it before running. · this prompt is generated from the build plan · improve it via PR
What would building your own look like?
Collect privacy-conscious first-party events, answer a small set of product questions with funnels, cohorts, and retention views, and retain raw data under the owner's control.
What you will need
- Docker
- ClickHouse
- PostgreSQL
- public HTTPS collector endpoint
- site script access
People still pay for Amplitude because teams pay because analytics must keep collecting and remain trustworthy while the product changes underneath it. The recurring cost buys event schemas, bot filtering, identity, late data, retention, query cost, privacy, backups, and always-on ingestion, not just the visible interface.
xbehavioral data platform, experimentation, identity, governance, and scale
xidentity stitching
xsession replay
xwarehouse connectors
xhigh-volume global ingestion and support
Prefer something ready-made?
UmamiFunnels, cohorts and retention without turning the analytics stack into a second product.Open source↗
PostHogFunnels, cohorts and retention on a free million-event allowance; the kitchen sink comes along.Open source↗
OpenPanelMixpanel's useful bits, plus a ClickHouse stack you now get to know personally.Open source↗View all 4 alternatives to Amplitude →· Licença, instalação e limitações em cada alternativa.
How much does Amplitude cost?
No public price. Check the official site.
Saved to My list. You will see a notice on this site when the price changes.
You complete the purchase on Amplitude’s site. Vibe Radar does not handle payments.
| Plan | Monthly | Annual (per month) | What is included |
|---|---|---|---|
| free | $0/workspace | $0/workspace | 2,000,000 events/month; 10,000 session replays/month; 2,000 AI feedback records; 500 active AI Visibility prompts; unlimited seats |
| plus | $0/workspace | $0/workspace | First 2,000,000 events/month free; scales to 70,000,000 events; 20 behavioral cohorts; 1,000 active AI Visibility prompts; 2-year retention |
| growth | custom | - | Custom event volume; 20,000 session replays/month; 2,500 active AI Visibility prompts; SSO and project permissions |
| enterprise | custom | - | Custom event volume; 50,000 session replays/month; 5,000 active AI Visibility prompts; unlimited projects per portfolio |
Free tier2,000,000 events/month, 10,000 session replays/month, 2,000 AI feedback records, 500 active AI Visibility prompts, and unlimited seats
Billing termsPlus is usage-based with monthly and annual billing; first 2M events/month are $0; Growth and Enterprise are custom contracts
Additional costsPlus becomes usage-priced above 2M events/month. Growth/Enterprise product expansions and add-ons are priced as a percentage of the platform plan.
verified 2026-10-20 · source ↗
Is it cheaper to build or buy Amplitude?
Adjust the numbers: hours to build, your hourly rate, running costs and the subscription price.
Over 24 months, subscribing is cheaper.
Starting hours estimated from the analysis (closest consolation build: one sitting). Does not price what you give up (support, integrations, security).
Can I rebuild Amplitude?
Not really. Amplitude’s value is not the code: Recheck price before merge. See the honest breakdown above.
How much does Amplitude cost?
Amplitude’s pricing is usage-based or varies by plan · Plus has no fixed monthly fee and is billed by event volume above 2M events, while Growth and Enterprise are contact-sales..
What do I lose by replacing Amplitude?
Honestly: behavioral data platform, experimentation, identity, governance, and scale; identity stitching; session replay; warehouse connectors; high-volume global ingestion and support. If any of those are load-bearing for you, keep paying.
Is there an open-source alternative to Amplitude?
Yes: Umami (Funnels, cohorts and retention without turning the analytics stack into a second product.) PostHog (Funnels, cohorts and retention on a free million-event allowance; the kitchen sink comes along.) OpenPanel (Mixpanel's useful bits, plus a ClickHouse stack you now get to know personally.) All 4 curated free alternatives are at https://viberadar.si/amplitude/alternatives. The prompt is for when you want it exactly your way.