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Become a sponsor to Jan Rabe

@kibotu

Jan Rabe

kibotu
Berlin

Hey, I'm Jan 👋

I've been building native apps for 15 years. Started with Android, picked up iOS along the way, now I lead native app development at CHECK24 Profis in Berlin, shipping products that a few million people actually depend on.

Somewhere between that and raising a toddler, I started open-sourcing the tools I wished existed. That turned into 185+ repositories, and I haven't figured out how to stop yet.

You might've used one without knowing. A geofencing library that refuses to die when Android kills your app. A splash screen that doesn't fight Jetpack Compose. A WebView bridge that lets you write one API for both platforms instead of two. App startup orchestrators for Android and iOS. An app size analyzer that tells you where your bytes went before App Review does. The featured work below shows what I'm actively maintaining.

I write about all of it on Medium, mostly things I figured out the hard way so you don't have to.

Why sponsor?

Every library I maintain is one less thing you have to build yourself. But keeping them alive takes time I'm running out of. My evenings used to be mine. Now they belong to a two-year-old who negotiates harder than any product manager I've met.

I'm not replacing a salary. I have a day job I love. A sponsorship just means I can keep saying yes to pull requests, issues, and that next library idea sitting in my notes.

website · twitter · linkedin · medium

@kibotu

The foundation. Three sponsors means every active library stays maintained, issues get answered, and I keep building in public.

Featured work

  1. kibotu/caliper

    iOS app size analyzer with LinkMap parsing, asset tracking, and module ownership. Generate interactive reports for App Store optimization and CI/CD integration.

    Swift 11
  2. kibotu/trail

    A micro blog journal. No algorithms, just posts in order. Like the old days.

    PHP 1
  3. kibotu/androidx-splashscreen-compose

    Drop-in animated splash screens for Android. Uses Jetpack Compose + AndroidX SplashScreen for smooth brand experiences without platform fights.

    Kotlin 95
  4. kibotu/geofencer

    Location tracking & geofencing the easy way. Supports background, killed app, rebooted device different update intervals.

    Kotlin 136
  5. kibotu/git-panorama

    Answer "who works on what?" across your entire engineering org. Self-hosted git analytics with beautiful Grafana dashboards. Track contributions, identify experts, measure team velocity, and visual…

    Shell 3
  6. kibotu/SlimStorage

    Self-hosted backend for side projects. Key/value store + Event API + Admin dashboard. One PHP file, no Composer, no containers.

    PHP 2

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$2 a month

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The Nod

You've used one of my libraries and it didn't ruin your day. That's worth acknowledging.

  • Sponsor badge on your GitHub profile
  • My mass extinction of side projects, slightly delayed

$5 a month

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The Builder

You rely on something I maintain and want to keep it alive.

  • Everything in The Nod
  • Your name in a SPONSORS.md across my active repositories
  • Priority on issue responses

$10 a month

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The Collaborator

You want a say in what gets built and maintained.

  • Everything in The Builder
  • Vote on which library gets attention next
  • Early access to new projects before they go public

$25 a month

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The Partner

  • Everything in The Collaborator
  • 30 min monthly call — architecture review, performance debugging, Android/iOS strategy. Bring your gnarliest problem.
  • Direct message access for quick questions

$50 a month

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The Believer

You believe in open source as infrastructure and want to fund it properly.

  • Everything in The Partner
  • Logo/link on my GitHub profile README and active repository READMEs
  • 1 hour monthly call — deep dives, code review, mentoring, whatever moves the needle for your team