Skip to content
You must be logged in to sponsor leo-lem

Become a sponsor to Leopold Lemmermann

@leo-lem

Leopold Lemmermann

leo-lem
Hamburg, Germany

My Story

Hey! I’m Leo, an indie iOS developer, DevOps engineer, and open-source contributor.
Currently wrapping up my master’s in Computer Science while working on meaningful tools, both personal and public.

I build clean, focused apps like
Smokes, a private habit tracker
Almost?, a reflection tool for near-misses

Both are handcrafted, privacy-conscious, and shipped on my own terms.

In parallel, I freelance, write, and contribute to open-source. I’m especially passionate about automation, thoughtful UX, and keeping things minimal and maintainable.

You can explore my current projects and read my blog over on leolem.dev.

Availability

I’m currently open to part-time freelance work and small collaborations, especially if you care about simplicity, polish, and clean architecture. Feel free to reach out via leolem.dev.

Why Sponsors?

This is a space to support independent work. No ads, no investors, no dark patterns.
If you like what I’m building or just want to help me spend more time on open tools, thank you. Every bit helps.

Leo

@leo-lem

I’d love to make enough each month to cover the basic costs of hosting, domains, and coffee while I keep building clean, open tools. Even small support helps me stay independent and keep building tools I care about.

Featured sponsors

@DanaReiber
Past sponsors 1
@DanaReiber

Featured work

  1. leo-lem/Smokes

    Quit tracking. Start winning.

    Swift 7
  2. leo-lem/Almost

    A reflective tool to help you learn from your near misses.

    Swift 9
  3. leo-lem/LaunchLab

    Your startup companion.

    Swift 3
  4. leo-lem/leolem.dev

    My personal website, built with Astro.

    TypeScript 17

Learn more about sponsoring developers and organizations.

Report abuse

0% towards $10 per month goal

Be the first to sponsor this goal!

Select a tier

$ a month

You'll receive any rewards listed in the $9 monthly tier. Additionally, a Public Sponsor achievement will be added to your profile.

$3 a month

Select

☕️ Supporter

For anyone who wants to say thanks or help me keep building.

Includes:

  • Shout-out in a future thank you blog post (opt-in)
  • Early peeks into what I’m working on

$9 a month

Select

🛠 Backer

Supports continued development of my open tools and apps like Smokes and Almost?.

Includes:

  • Everything in Supporter
  • Priority on feature suggestions and feedback
  • Early TestFlight invites when available

$25 a month

Select

🔬 Sponsor

Helps me go deeper: build better tools, write more, and share what I learn.

Includes:

  • Everything above
  • Direct async feedback or short Q&A
  • Sneak previews of upcoming experiments
  • Optional shout-out on leolem.dev

$75 a month

Select

🧑‍💼 Indie Team

Perfect for small teams who want to support sustainable, thoughtful software.

Includes:

  • Everything above
  • Logo + link on my site
  • Access to early experiments or tooling (when relevant)
  • Option to schedule async advice or feedback on your own stuff