StackStats vs AgentBill

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

StackStats compared with AgentBill
Detail	StackStats	AgentBill
What it does	Advanced analytics for Substack writers that runs locally without cloud or subscription	AI cost tracking and billing analytics platform
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Paid	Freemium
Pricing	1-Year License: $39 USD (1 device, 1 year of updates, app yours forever after update period). Lifetime License: $79 USD early adopter price (up to 3 devices, every future update forever). After 1-year period, renewal available for $29/yr or no renewal required—app continues working permanently.	Free plan available; pay-as-you-go and enterprise options offered. USD pricing from $0 to $999.
Key features	Subscriber engagement segments identifying Champions, Loyalists, At-Risk, and Ghosts Churn risk scoring for each subscriber on a 0–100 scale Cohort retention analysis tracking last 12 cohorts 90-day subscriber growth forecast Best day and hour to post determined from your own data Superfan and power user identification Open rate decay tracking Geographic audience breakdown by country and US state Content-to-growth correlation analysis 100% local data processing with no cloud or server	Track unlimited AI events Automate invoicing Node.js SDK TypeScript support AI cost analytics Pay-as-you-go billing
What makes it different	Runs entirely locally on your machine with no cloud server or account required One-time payment model with no recurring subscription charges Auto-Sync functionality for one-click Substack data download without manual CSV exports	Transparent pricing with no hidden costs Free plan available Tracks unlimited AI events
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	17 +4 (up) since last check	7 no change since last check
Trust Flow (Majestic)	8	0
Citation Flow (Majestic)	19	8
Referring domains (Majestic)	29	2

5 details filled in for both companies.

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