ProbeKits
Free browser-based tests for your computer peripherals
What is ProbeKits?
ProbeKits provides free browser-based checks for mouse, keyboard, display, webcam, microphone, audio and gamepad input. Use the tools without an account or installation. Camera and microphone checks require browser permission. Results describe signals the browser can observe; they are not repair advice, a warranty or proof that hardware is fault-free.
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FounderPlaybooks.
What other founders did to grow.
2722 dispatches from hundreds of founders, pulled from the week's best podcasts.
What makes win-back offers so powerful in the wild is that you've got marketing channel access to these people — you send them an email or a push notification. That's what makes win-back so powerful. Apple gets close but then they just miss the fundamental thing that makes something powerful.
Win-back offers miss the most powerful ingredient: a direct communication channel to lapsed subscribers
Apple's new win-back offers let lapsed subscribers see a comeback deal inside the App Store or on app open — but Apple provides no server-to-server notification when someone becomes eligible, and no way to email or push them directly. The most effective win-back campaigns still require owning communication. Tools like RevenueCat can bridge this by identifying eligible subscribers and triggering your own push or email campaign the moment Apple flags eligibility.
We still have a million daily new installs and as I say half of those are reinstalls. It's worth for us to keep the content furnace and the virality going and not jeopardize it by trying to extract too much value.
Protecting the core game from hard monetization preserves word-of-mouth that sustains 1 million daily installs 13 years in
Subway Surfers founders set a non-negotiable rule: the core run is always free, players can always progress, and aggressive monetization walls are off the table. Thirteen years later, 1 million new installs arrive daily — half of them reinstalls from people who still think of it as their go-to game. The refusal to squeeze every dollar protects the viral word-of-mouth and TikTok-shareability that makes it discoverable to a new generation of players every year at zero paid acquisition cost.
There's a play for whatever you're stuck on.
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