GrowingAlgo Guides
Marketing guides
Clear writing on UTMs, ROAS, Google Ads limits, SEO titles, and conversion math. Each article ends with the free tools to use next.
Paid ads
Paid ads notes
- ROAS vs ROI: which number to use in paid ads ROAS is return on ad spend. ROI is return on the full cost. When to use each, and the GrowingAlgo calculators that keep the weekly review honest.
- Google Ads character limits for RSA headlines and descriptions Current Responsive Search Ad limits, why truncated copy loses the auction, and the GrowingAlgo checkers to run before you pin a headline.
- CPC or CPM: which lever you are actually pulling Cost per click vs cost per thousand impressions. When each is the honest unit, and the GrowingAlgo calculators for both.
Conversion
Conversion notes
- CAC vs CPA: which cost to put in the weekly review CPA is cost per conversion. CAC is cost to acquire a customer. When they diverge, and which GrowingAlgo calculators to use.
- When to stop an A/B test A decision rule, not a Tuesday feeling. Sample, peeking, and the GrowingAlgo calculator that keeps the call honest.
- LTV:CAC - the ratio that gives CAC a ceiling Lifetime value next to acquisition cost. A working rule, what fake LTV looks like, and the GrowingAlgo calculators.