ecomrestack

battles / Analytics

FullStory vs Singular

FullStory ($850/mo/mo, vibe code 3/10) vs Singular ($500/mo/mo, vibe code 2/10). FullStory is the easier one to rebuild yourself — here is what you lose either way.

FullStory
KEEP

Analytics

$850/mo/mo

Vibe code3/10
Moat5/10
MVP
1 week
Full replacement
12-24 months, due to massive DOM storage scale, real-time query engines, and client-side PII masking.

easier to rebuild

get the build prompt →
Singular
KEEP

Analytics

$500/mo/mo

Vibe code2/10
Moat7/10
MVP
2-3 weeks
Full replacement
12-24 months, due to complex MMP partner API maintenance, iOS SKAdNetwork/ATT constraints, mobile SDK maintenance, and continuous fraud detection.
get the build prompt →

price gap / year

$4,200/mo

running both / year

$16,200/mo

our call

Start with FullStory — highest vibe code, weakest moat.

FullStory

Wrapping rrweb into a web app takes a few days, but storing millions of DOM diffs without killing client performance or ballooning cloud database bills requires serious infrastructure engineering. Client-side PII masking, SOC2 compliance, and fast event indexing cannot be prompt-engineered.

you can rebuild

  • Client-side DOM event and mutation recording
  • Basic session replay video playback
  • Console logs and network request capturing
  • Simple click and scroll heatmaps
  • Basic funnel step tracking

what you lose

  • Automated client-side PII and sensitive input field masking before data transmission
  • Instant retroactive search over unindexed DOM text and element CSS selectors
  • Frustration heuristics like rage clicks, dead clicks, and error clicks
  • Enterprise compliance certifications including SOC2 Type II, HIPAA, and GDPR tooling
  • High-throughput event ingestion infrastructure optimized for gigabytes of raw DOM diffs

real moats

  • Patented client-side DOM capture and event compression engine
  • Proprietary retroactive search index over raw DOM mutation streams
  • SOC2 Type II, HIPAA, and strict client-side PII masking guarantees

open source escape hatches

Singular

Singular is an accredited Mobile Measurement Partner (MMP) integrated into Self-Attributing Networks (SANs) like Meta, Google, and TikTok. Rebuilding its cost aggregation connectors and keeping up with Apple SKAdNetwork schema updates requires continuous full-time engineering. An AI agent can build a simple UTM database, but it cannot replicate MMP partner status or mobile attribution mechanics.

you can rebuild

  • Basic web UTM campaign tracking and first-touch/last-touch attribution
  • Visual analytics dashboard for aggregate ROI and ROAS metrics
  • Custom database schema for storing ad cost data and orders
  • Basic webhook intake for web conversion events and purchases
  • Exportable CSV reports and automated email performance alerts

what you lose

  • Official Self-Attributing Network (SAN) claim verification with Meta, Google, and TikTok
  • Apple SKAdNetwork 4.0 conversion value mapping and probabilistic fallback models
  • Automated cost aggregation ETL connectors maintained across 1,000+ ad networks
  • Ad fraud prevention suite detecting SDK spoofing and click injection
  • Battle-tested iOS and Android native attribution SDKs with zero-latency overhead

real moats

  • Official MMP partner status required to decrypt and match installs from SANs
  • Continuous API maintenance for hundreds of ad network cost-ingestion endpoints
  • Deep compliance infrastructure for Apple ATT and Google Privacy Sandbox protocols

open source escape hatches

Questions people ask

Which is easier to rebuild with AI, FullStory or Singular?

FullStory. It scores 3/10 on vibe code with a moat of 5/10, so an AI-assisted MVP takes about 1 week and a full replacement about 12-24 months, due to massive DOM storage scale, real-time query engines, and client-side PII masking..

Which one costs less, FullStory or Singular?

Singular at $500/mo/mo for a typical mid-market store. The gap between the two is about $4,200/mo a year.

What do I lose if I replace FullStory?

Automated client-side PII and sensitive input field masking before data transmission Instant retroactive search over unindexed DOM text and element CSS selectors Frustration heuristics like rage clicks, dead clicks, and error clicks

What do I lose if I replace Singular?

Official Self-Attributing Network (SAN) claim verification with Meta, Google, and TikTok Apple SKAdNetwork 4.0 conversion value mapping and probabilistic fallback models Automated cost aggregation ETL connectors maintained across 1,000+ ad networks

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