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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 13
  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 96
  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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The High Five

A library saved you an afternoon. This is the "thanks, that was clutch" button.

  • Warm fuzzy feeling
  • My gratitude, genuinely

$15 one time

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The Gift

You used something in production and it just worked. That deserves more than a star.

  • Your name in SPONSORS.md across my active repositories
  • A shoutout on my Trail feed

$50 one time

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The Boost

You want to fuel a specific project or just throw momentum behind the whole thing.

  • Everything in The Gift
  • I'll prioritize one issue or feature request of your choice

$100 one time

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The Patron

You believe good tools should exist and someone should be thanked for building them.

  • Everything in The Boost
  • 30 min call — pick my brain on Android/iOS architecture, performance, team scaling, or anything else
  • Logo/link in SPONSORS.md with a "Patron" badge

$250 one time

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The Accelerator

Your company shipped faster because of something I built. Let's make it official.

  • Everything in The Patron
  • Logo/link on my GitHub profile README for 3 months
  • 1 hour deep-dive call — architecture review, code audit, migration strategy, whatever helps your team most