Short answer: these are not competitors. ProfitWell is free operator-side subscription metrics. ChurnLens is buyer-side due diligence for a company you do not own yet. Most people arriving at this comparison need one clearly more than the other.
Nearly every tool in this category is operator-side: you connect your own billing account and watch your own revenue. ChurnLens is buyer-side: you send an export from a company you are considering buying, and it tells you whether the story that export tells is the same story the seller told you. That single difference — whose business is being measured, and who chose the definitions — decides which tool you want far more than any feature list.
ProfitWell — now ProfitWell Metrics, part of Paddle — became widely used because its core subscription metrics are free and carefully normalised. It is monetised through its retention and pricing products rather than the dashboard.
How it gets data: A live billing integration — you connect your own Stripe or billing account. Commercially: Core metrics are free; revenue comes from Retain and the pricing services.
Because ProfitWell is free, it is often the first thing a first-time buyer reaches for. But free and operator-side are different axes. ProfitWell connects to a billing account you control and monitors it going forward. It is not built to interrogate a third party's business from a static export, and it will not produce a concentration analysis, a red-flag list, or a revenue-quality grade for a target.
| Dimension | ProfitWell | ChurnLens |
|---|---|---|
| Primary user | Founders and operators running their own SaaS | Acquirers, PE and M&A analysts, and searchers buying one |
| Core job | Free operator-side subscription metrics | One-off buyer-side acquisition risk report |
| Data it needs | A live billing integration — you connect your own Stripe or billing account. | The target's raw subscription CSV export — no seller credentials |
| Whose definitions apply | The connected account's own configuration | Recomputed from raw rows, specifically to test the reported figure |
| Output | Dashboards, reports and trend charts | Benchmarked A–F revenue-quality grade plus a ranked red-flag report |
| Time to first answer | Continuous, once setup and integration are done | Minutes, from a single CSV upload |
| Commercial shape | Core metrics are free; revenue comes from Retain and the pricing services. | Free tier; one-off analysis from $9; paid tiers to $1,999 |
| Best for | Running a SaaS | Buying one |
The overlap is narrower than the price tag suggests. Both will tell you a churn percentage. Only one of them was designed on the assumption that the number it is given might be wrong — which is the working assumption of every buyer-side diligence process.
A searcher evaluating a $1.2M ARR target signs up for ProfitWell because it costs nothing, then discovers the seller will not hand over billing credentials — only a CSV. At that point the free dashboard has nothing to connect to, and the diligence work reverts to a spreadsheet.
Illustrative scenario, not a measured result from a named company.
Stay with ProfitWell if you run a SaaS and want accurate metrics at no cost, plus dunning. Use ChurnLens if you have a CSV rather than credentials, and the number you were given is the thing you need to test. Plenty of people end up using both, at different moments: one before a deal closes, the other after.
A comparison page that only lists strengths is not much use in diligence, so here is the other side.
If any of those four are what you came for, ProfitWell or a tool like it is the better purchase, and we would rather say so here than after you have signed up.
ProfitWell gives an operator free subscription metrics on their own data. ChurnLens gives an acquirer a defensible read on someone else's.e practical differences for a deal team.
Short answer: ProfitWell is free operator-side subscription metrics, and it is good at that. It is not a diligence tool. If you are testing whether a target's reported churn survives its own raw data, that is a different job — and the one ChurnLens was built for.
Nearly every tool in this category is operator-side: you connect your own billing account and watch your own revenue. ChurnLens is buyer-side: you send an export from a company you are considering buying, and it tells you whether the story that export tells is the same story the seller told you. That single difference — whose business is being measured, and who chose the definitions — decides which tool you want far more than any feature list.
ProfitWell — now ProfitWell Metrics, part of Paddle — became widely used because its core subscription metrics are free and carefully normalised. It is monetised through its retention and pricing products rather than the dashboard.
How it gets data: A live billing integration — you connect your own Stripe or billing account. Commercially: Core metrics are free; revenue comes from Retain and the pricing services.
Because ProfitWell is free, it is often the first thing a first-time buyer reaches for. But free and operator-side are different axes. ProfitWell connects to a billing account you control and monitors it going forward. It is not built to interrogate a third party's business from a static export, and it will not produce a concentration analysis, a red-flag list, or a revenue-quality grade for a target.
| Dimension | ProfitWell | ChurnLens |
|---|---|---|
| Primary user | Founders and operators running their own SaaS | Acquirers, PE and M&A analysts, and searchers buying one |
| Core job | Free operator-side subscription metrics | One-off buyer-side acquisition risk report |
| Data it needs | A live billing integration — you connect your own Stripe or billing account. | The target's raw subscription CSV export — no seller credentials |
| Whose definitions apply | The connected account's own configuration | Recomputed from raw rows, specifically to test the reported figure |
| Output | Dashboards, reports and trend charts | Benchmarked A–F revenue-quality grade plus a ranked red-flag report |
| Time to first answer | Continuous, once setup and integration are done | Minutes, from a single CSV upload |
| Commercial shape | Core metrics are free; revenue comes from Retain and the pricing services. | Free tier; one-off analysis from $9; paid tiers to $1,999 |
| Best for | Running a SaaS | Buying one |
The overlap is narrower than the price tag suggests. Both will tell you a churn percentage. Only one of them was designed on the assumption that the number it is given might be wrong — which is the working assumption of every buyer-side diligence process.
A searcher evaluating a $1.2M ARR target signs up for ProfitWell because it costs nothing, then discovers the seller will not hand over billing credentials — only a CSV. At that point the free dashboard has nothing to connect to, and the diligence work reverts to a spreadsheet.
Illustrative scenario, not a measured result from a named company.
Stay with ProfitWell if you run a SaaS and want accurate metrics at no cost, plus dunning. Use ChurnLens if you have a CSV rather than credentials, and the number you were given is the thing you need to test. Plenty of people end up using both, at different moments: one before a deal closes, the other after.
A comparison page that only lists strengths is not much use in diligence, so here is the other side.
If any of those four are what you came for, ProfitWell or a tool like it is the better purchase, and we would rather say so here than after you have signed up.
They do different jobs, so it depends on which side of a transaction you are on. ProfitWell is free operator-side subscription metrics; ChurnLens is buyer-side due diligence. Keep ProfitWell if you run a SaaS and want accurate metrics at no cost, plus dunning. Use ChurnLens if you have a CSV rather than credentials, and the number you were given is the thing you need to test.
Only if the seller gives you live billing credentials, which is rare. ProfitWell is built around a connected account you control, and it reports using that account's own churn configuration — the very thing a buyer needs to test rather than inherit.
No, and that is deliberate. ChurnLens works from the raw subscription CSV a seller exports, so you can run diligence on a target without ever holding their live billing credentials — which is the situation buyers are actually in.
A benchmarked A–F revenue-quality grade and a ranked red-flag report tuned to acquisition risk: hidden churn, customer-concentration risk, annual-plan decay and zombie MRR — all recomputed from the raw rows rather than reported according to the seller's own configuration.
ProfitWell's free tier gives you surface metrics. Our free tier shows you what acquirers will find in due diligence.
ProfitWell offers free SaaS metrics. ChurnLens provides acquisition-grade revenue quality analysis — concentration scoring, cohort retention, and MRR decay detection that free tools don't surface.
Send the subscription CSV a seller gave you and get a revenue-quality grade plus a ranked red-flag report.
Try ChurnLens free →They do different jobs, so it depends on which side of a transaction you are on. ProfitWell is free operator-side subscription metrics; ChurnLens is buyer-side due diligence. Keep ProfitWell if you run a SaaS and want accurate metrics at no cost, plus dunning. Use ChurnLens if you have a CSV rather than credentials, and the number you were given is the thing you need to test.