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battles / Analytics

Cometly vs Supermetrics

Cometly ($399/mo/mo, vibe code 5/10) vs Supermetrics ($350/mo/mo, vibe code 5/10). Cometly is the easier one to rebuild yourself — here is what you lose either way.

Cometly
NICHE

Analytics

$399/mo/mo

Vibe code5/10
Moat2/10
MVP
1 week
Full replacement
3-6 months, due to CAPI integration maintenance and browser identity resolution changes

easier to rebuild

get the build prompt →
Supermetrics
NICHE

Analytics

$350/mo/mo

Vibe code5/10
Moat3/10
MVP
3-5 days
Full replacement
6-12 months, due to continuous API maintenance across 100+ channels
get the build prompt →

price gap / year

$588/mo

running both / year

$8,988/mo

our call

Start with Cometly — highest vibe code, weakest moat.

Cometly

Building a basic UTM recorder with a dashboard takes a weekend. Replicating multi-touch attribution, server-side CAPI event deduplication, and maintaining ad platform API connections against breaking changes across Meta, Google, and TikTok is a full-time engineering effort.

you can rebuild

  • UTM parameter capturing and first-party cookie tracking scripts
  • First-touch and last-touch attribution SQL query logic
  • Analytics dashboard displaying CAC, ROAS, and ROI per ad campaign
  • Shopify webhook receiver for sales conversion ingestion
  • Basic server-side event payload generation

what you lose

  • Turnkey client/server event deduplication across Meta, TikTok, and Google
  • Automated token refresh and API schema maintenance across ad platforms
  • Pre-packaged identity stitching across multi-device user journeys
  • Ad spend ingestion pipelines that handle API rate limits and currency conversions
  • No-code Shopify theme app integration

real moats

  • Maintained native integrations with rapidly evolving ad platform APIs
  • First-party identity graph infrastructure optimized for browser privacy limits
  • Turnkey server-side tracking bypassing Safari ITP and ad blockers without custom DNS configuration

open source escape hatches

Supermetrics

Supermetrics is essentially a collection of managed API wrappers and ELT cron jobs. Building a custom script to sync 2 specific channels (e.g. Meta Ads to BigQuery) takes a weekend, but maintaining normalized schemas across dozens of rapidly changing third-party ad APIs is an endless game of whack-a-mole.

you can rebuild

  • Scheduled daily Meta Ads and Google Ads metric extractions
  • Shopify sales and order data ingestion into BigQuery or Postgres
  • Calculation of custom cross-channel CAC and ROAS metrics
  • Automated OAuth token refresh handling for primary platforms
  • Data export to Google Sheets via Google Sheets API

what you lose

  • Zero-maintenance handling of third-party API deprecations and breaking changes
  • Native Google Sheets and Excel sidebar add-ins for non-technical users
  • Pre-built report templates for Looker Studio, PowerBI, and Tableau
  • Turnkey connector ecosystem for 100+ niche ad and analytics platforms
  • Automated historical data backfill utility across all connected sources

real moats

  • Dedicated engineering resources tracking continuous third-party API changes
  • Deeply embedded spreadsheet add-ins and Looker Studio native connectors
  • Pre-configured data normalization schemas across competing ad platforms

open source escape hatches

Questions people ask

Which is easier to rebuild with AI, Cometly or Supermetrics?

Cometly. It scores 5/10 on vibe code with a moat of 2/10, so an AI-assisted MVP takes about 1 week and a full replacement about 3-6 months, due to CAPI integration maintenance and browser identity resolution changes.

Which one costs less, Cometly or Supermetrics?

Supermetrics at $350/mo/mo for a typical mid-market store. The gap between the two is about $588/mo a year.

What do I lose if I replace Cometly?

Turnkey client/server event deduplication across Meta, TikTok, and Google Automated token refresh and API schema maintenance across ad platforms Pre-packaged identity stitching across multi-device user journeys

What do I lose if I replace Supermetrics?

Zero-maintenance handling of third-party API deprecations and breaking changes Native Google Sheets and Excel sidebar add-ins for non-technical users Pre-built report templates for Looker Studio, PowerBI, and Tableau

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