ChartMogul vs PostHog
A detailed comparison to help you choose between ChartMogul and PostHog.
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Verdict: PostHog wins
PostHog scores 4.4/5, edging out ChartMogul at 4.1/5. Engineering-led product teams that want analytics, session replay, flags and error tracking in one open-source platform and are willing to configure event design and sampling deliberately.
ChartMogul Subscription analytics platform for tracking recurring revenue metrics | PostHog Product analytics platform with built-in session replay and feature flags | |
|---|---|---|
| Rating | 4.1 (1 review) | 4.4 (1 review) |
| Pricing Model | freemium | freemium |
| Starting Price | Free tier available | Free tier available |
| Best For | SaaS founders and finance teams who need trustworthy MRR, churn and cohort metrics across billing systems and want to start free below $10K MRR. | Engineering-led product teams that want analytics, session replay, flags and error tracking in one open-source platform and are willing to configure event design and sampling deliberately. |
| Free Tier | ||
| API Access | ||
| Team Features | ||
| Open Source | ||
| Tags | free tierapi access | free tieropen sourceapi access |
| Visit ChartMogul → | Visit PostHog → |
ChartMogul
Pros
- + MRR movements reconciled exactly month to month in my testing — new, expansion, contraction and churn lines summed to the reported change with no manual corrections on a Stripe setup
- + Free up to $10K MRR with the full metrics model included, which makes it the obvious starting point for pre-$10K-MRR SaaS
- + The per-customer MRR table shows annual normalization, proration and exchange-rate impact as visible lines instead of burying them in a total
- + Segmentation goes deep with custom sources — I built an LTV-by-acquisition-channel report by joining external lead data, which flat metrics tools cannot do
- + REST API, MCP server and CSV access on every plan, so the data is yours to move even at the free tier
Cons
- - Pricing scales with ARR tracked: the analytics bill grows exactly when the business does, reaching the high hundreds per month by $5M ARR
- - Starter allows only one billing system and three team members, so any multi-system revenue setup forces Pro
- - Accounting connections run through a partner (SaaSync) with a manual review queue for invoices the system cannot parse
- - Forecasting is limited to the AI assistant's projections; serious planning needs a warehouse or BI export on Pro and above
- - Third-party review sites still publish outdated plan names and prices — only the vendor pricing page reflects the current Starter/Pro/Enterprise tiers
PostHog
Pros
- + Free tier resets monthly and covers real work: 1M events, 5K recordings, 1M flag requests and 100K exceptions per month, with every feature available and no credit card
- + Funnel-to-replay-to-error-trace in one timeline replaced a three-tool debugging loop I used to run across separate user IDs
- + Self-hosting under MIT keeps event data inside your own infrastructure — the practical answer I recommend for regulated teams
- + No seat-based pricing at all; adding engineers, PMs and analysts to my projects never changed the bill
- + Billing limits are hard caps you set yourself, so a runaway autocapture config stops at your ceiling instead of at a surprise invoice
Cons
- - Session replay, not analytics, became the largest cost line in my test project once traffic passed the 5K free recordings
- - The interface packs nine-plus products into one navigation; new users I onboarded needed a full day before finding the right tool consistently
- - Self-hosting is a genuine ops burden (ClickHouse, Kafka, Postgres) and the self-hosted build lacks SAML SSO and granular permissions
- - Identified events cost nearly 4x anonymous events in the first paid band, so user-identification choices move the bill more than event volume does
- - Past a billing limit PostHog drops data until the next period — cost control comes at the price of visibility
Frequently Asked Questions
Which is better, ChartMogul or PostHog?▼
PostHog scores higher at 4.4/5 vs 4.1/5 for ChartMogul, making it the better-rated option in our comparison.
What is the difference between ChartMogul and PostHog?▼
ChartMogul: ChartMogul turns billing data into subscription analytics, tracking MRR, churn, cohorts and expansion for recurring revenue businesses. PostHog: PostHog is an open-source product analytics platform that combines event analytics, session replay, feature flags, A/B testing and error tracking in one tool for product and engineering teams.
Is ChartMogul or PostHog more affordable?▼
ChartMogul starts at €0/mo, PostHog starts at €0/mo. Check the comparison table above for current pricing.
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