Mobbin

Pro badges on paid-only features lifted free-to-paid conversions 35%. Mobbin marked features exclusive to paying users with a visible Pro badge and saw free-to-paid conversions rise 35%. No other changes were made to the app.

The badges showed free users what upgrading includes and stopped them from hitting unexpected paywalls after tapping. The lesson is to check whether free users know what the paid plan offers before reworking pricing or paywall screens. As the write-up puts it, "The addition of these badges led to a noticeable increase in free-to-paid conversions, despite no other changes being made to the app."

abtest.design

Vibe coders use Mobbin screenshots as design references in parallel prototypes. Lazar Jovanovic starts each project with four or five prototypes in parallel. One is a prompt with a reference screenshot from Mobbin or Dribbble, alongside a voice brain dump, a typed prompt, and a prompt with a code snippet from a library like 21st.dev.

He compares the results and keeps the clear winner, and says this saves hundreds of credits and days over fixing a weak first build. Quote: "You're going to get three, four, five, six different concepts that you can compare. As you're comparing them, clarity just keeps coming."

Lenny's Podcast▶ 22:25

Mobbin's designer focus left a gap for people testing niches and experiments. Alex, speaking on Superwall, says Mobbin serves designers rather than people who want to test niches and experiments. That gap is what his library Screens.design fills.

Screens.design shows full flows from 2,200 apps. He and his partner first broke down successful apps, then ran experiments with Mixpanel and A/B tests, having not understood "the importance of onboarding flows and paywalls."

Superwall▶ 5:18