Founders, CEOs and finance leads of subscription software businesses, from first revenue to around A$20 million ARR, who want a monthly health check without building a model. It also suits board members and investors reviewing a business's numbers.
Free AI skill · Finance
Rev-IQ Six SaaS Numbers
Know whether your SaaS numbers are healthy, and which one to worry about.
Calculates the six numbers that matter in a subscription business from your P&L or MRR export, avoids the common traps that flatter them, and tells you which number to worry about first.
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Works out MRR and ARR, gross and net churn, CAC, CAC payback and runway, with a directional LTV. It separates one-off fees from recurring revenue, includes sales salaries in CAC, flags concentration risk and gives three actions before your next review.
Rev-IQ's framework The Six SaaS Numbers That Actually Matter, and its Finance Dashboard Template.
A P&L summary or management accounts for the last three to six months, a customer MRR export if you have one, and your current cash balance. Not for: Statutory accounts, tax, valuations or detailed forecasting.
How it works
What happens when you run it
- Share your P&L summary, MRR export and cash balance, or type in the figures.
- It confirms anything ambiguous, such as which lines are one-off fees or sales costs.
- A built-in calculator works out the six numbers, so the maths is consistent every month.
- You get each number with a signal, the one to worry about, and three actions.
Try asking: "Here's our P&L summary and customer MRR export for the last six months. How healthy are our numbers?"
It runs inside your own AI account. Nothing you enter is sent to Rev-IQ.
Sample output, abridged
Six SaaS numbers: Northwind Rostering, September 2026
| Number | Value | Signal |
|---|---|---|
| MRR / ARR | A$74,400 / A$892,800 | Healthy, with a caveat |
| Gross churn | 8.6% | Needs attention |
| Net churn | 2.9% | Needs attention |
| CAC (3-month) | A$35,200 | Watch |
| CAC payback | 14.8 months | Watch |
| Runway | 8.9 months | Watch |
The number to worry about: gross churn
Northwind lost A$6,300 of MRR in September, the highest month in the period. At this rate a customer is worth less in gross margin than it costs to acquire. MRR growth is real but thin: A$9,000 of the A$11,400 growth since April came from one customer.
Traps avoided: A$61,000 of setup fees kept out of MRR, and sales salaries included in CAC, which would otherwise have been understated fourfold.
Northwind Rostering is a fictional 30-customer software business used to test every Rev-IQ skill. Your output will reflect your own information.
Install
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Each platform has its own download, so choose yours in the form above. The install guide is included with every download.
Claude
Free, Pro, Max, Team and Enterprise plans, with code execution switched on.
- Go to Customize, then Skills.
- Select +, then + Create skill, then Upload a skill.
- Choose the .zip file you downloaded and check the skill is switched on.
On Enterprise, an organisation owner turns on Skills and code execution first.
Claude install guide (PDF) →ChatGPT
Business, Enterprise, Healthcare and Edu workspaces. Personal Free, Plus and Pro plans don't currently include skill uploads.
- In the sidebar, select Plugins, then the Skills tab.
- Select Create, then Upload from your computer.
- Choose the .zip file you downloaded. Type @ in a chat to run it.
On Enterprise and Edu, a workspace admin may need to enable skill uploading.
ChatGPT install guide (PDF) →Perplexity
Any plan that includes Computer: Pro, Max, Enterprise Pro and Enterprise Max.
- In Computer, go to the Skills page.
- Select Create skill, then Upload a skill.
- Drag in the .zip file you downloaded. It's ready in your next task.
Use the Perplexity download. It's packaged differently from the other two.
Perplexity install guide (PDF) →
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Free to use for your own business under the Rev-IQ Terms of Use. Outputs are general guidance based on the information you provide, not financial, legal or professional advice, and results aren't guaranteed. Claude is a trademark of Anthropic, ChatGPT of OpenAI and Perplexity of Perplexity AI. Rev-IQ isn't affiliated with or endorsed by them.