Benchmarks for people who grow revenue online
GrowRevenue was my conversion optimization newsletter from 2017 to 2021. These are the six pieces other sites still link to, rewritten and updated with 2026 data.
- Churn rate benchmarks: how high is too high?
What churn rate is normal for a subscription business? The 2019 numbers, the 2026 numbers, and why the famous 5% rule only fits enterprise software.
Updated 2026-11-06 - Spotify's free-to-paid conversion: 46% in 2019, 39% in 2026
Spotify has more paying subscribers per active user than almost any freemium product. What that ratio really measures, how it changed, and which of its conversion levers you can copy.
Updated 2026-11-06 - Google's UX playbooks: seven free checklists for better mobile sites
Google made seven industry UX playbooks for retail, lead gen, travel, finance, real estate, news and auto sites. Where to download them, what is in them, and which advice has aged.
Updated 2026-11-06 - What's a good bounce rate? Benchmarks for GA4 in 2026
Bounce rate means something different in Google Analytics 4 than it did in Universal Analytics. The new definition, 2026 benchmarks by industry, device and channel, and the 2020 numbers for comparison.
Updated 2026-11-06 - UX writing: how a few words change what people do
Button labels, form hints and error messages are some of the cheapest things to test. Four documented cases where wording alone moved behavior, and the rules that come out of them.
Updated 2026-11-06 - Email marketing conversion rates: 2026 benchmarks by email type
How many people click and buy from marketing email? Click rates, conversion rates and revenue per recipient for campaigns and automated flows, with the 2018 numbers for comparison.
Updated 2026-11-06
About
I'm Radek Sienkiewicz. I've worked in conversion optimization and analytics for more than 15 years, mostly for ecommerce and SaaS companies. From 2017 to 2021 GrowRevenue shared the research and case studies I thought were worth a marketer's time.
Every page here lists its sources with dates, so you can check the numbers and see how old they are. These days I write and make videos at velvetshark.com.