ChartMogul starts at $199/mo for subscription analytics — cohort-level MRR, churn, and LTV from your billing data. Herald connects that revenue signal to product usage, support, and customer conversations for $29/mo flat.
ChartMogul aggregates billing data from Stripe, Paddle, and other sources into cohort-level subscription metrics. That tells you MRR is down 3%. Herald tells you MRR is down 3%, two enterprise accounts have gone quiet on support, and one churned right after a failed API call last Tuesday. The context is the part that determines what you do next.
ChartMogul's pricing scales with customer count and MRR volume. Herald's Starter is $29/mo — flat, regardless of how many customers you have or how much revenue runs through Stripe.
ChartMogul's strength is customer segmentation — slice MRR by plan, cohort, or geography. Herald's strength is the Monday briefing: three minutes of named customers, specific signals, and suggested actions. If you want pivot tables, ChartMogul is the right tool; if you want a readable digest, Herald is.
Herald gives each Product its own Cloudflare Durable Object with its own SQLite. ChartMogul is a shared-infrastructure SaaS. Your subscription data is architecturally isolated in Herald — not just permissioned on a shared database.
| Dimension | Herald | ChartMogul |
|---|---|---|
| Pricing model | Flat per account | Scales with customer count / MRR volume |
| Starting price | Free · $29/mo (Starter) | $199/mo (Launch plan) |
| Primary data source | Stripe + product events + support + calls | Billing data (Stripe, Paddle, others) |
| Primary output | Weekly briefing + chat | Subscription metrics + segmentation |
| Cross-signal ingest | Native (Stripe, Intercom, Linear, calls, email) | Billing sources; limited CRM integrations |
| Ask-anything chat | Native, sandboxed SQL | No |
| Data location | Your own Durable Object | ChartMogul Cloud |
Pricing figures as listed on each vendor's public site as of 2026.
If you need deep subscription segmentation — cohort analysis, MRR movement by plan tier, geographic revenue breakdown — ChartMogul's reporting layer is built for that and Herald is not.
If you're already integrated and your team depends on ChartMogul's customer-level subscription view, the migration cost may not be worth the switch.
Connect Stripe and drop the Herald SDK, read Monday's briefing. Starter is $29/mo — run it alongside ChartMogul until you know which one answers your questions faster.
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