Founder · Developer

Anthony Rasch
builds products
from the ground up.

I build products end-to-end. Code, infrastructure, distribution. I founded Sapplify, shipped 6 apps across 3 platforms, and launched euinvoice.app as a production SaaS. I bring that same depth to every project.

Illustration of hands coding at a desk
Based in Slovakia
10:21 CET
Currently taking on new projects
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Building Sapplify meant solving problems that aren’t code. I built a 675-page SEO engine because the best app nobody finds is still nobody’s app. I built ML models in pure Dart because sending health data to the cloud wasn’t an option. I built my own content pipeline because no existing tool could do what I needed.

That’s how I approach every project. The code is one layer. What makes it work is everything around it.

Illustration of a person working at a laptop
6
Apps Published
3
Platforms
133
Countries Reached
10.44%
Conversion Rate
Above 75th Percentile
415k+
Social Media Reach
1
Company Built Solo

Sapplify

Six apps across three platforms, built and run by one person. From product and code to marketing, ASO, and content. This is what building a company end-to-end actually looks like.

Ecosystem
Apps
sWeightsCyclesBudgetsMomentsListssTrain
Stores
App StoreGoogle PlayAppGallery
Social
InstagramPinterestTikTokYouTubeFacebook
Infrastructure
FastAPI BackendASO EnginesConsoleOn-Device ML
Read the Full Case Study

Other things I’ve built.

Next.js · Supabase · Stripe · React PDF

euinvoice.app

A production SaaS EU invoice generator for freelancers and small businesses. Covers 7 EU countries with automatic VAT handling, reverse charge detection, client-side PDF generation, and Stripe monetization.

Vanilla JS · Supabase · CSS 3D

How’s the World Feeling?

A real-time global emotion tracker. Users anonymously share how they feel and see the world’s collective mood on an interactive 3D wireframe globe — built entirely without frameworks.

I bring a founder’s
perspective to every project.

When you hire a developer who’s also built a company, you get someone who thinks about the product, not just the feature.

Mobile Development
Cross-platform apps with Flutter, from first commit to app store. I’ve shipped six of my own across iOS, Android, and Huawei.
FastAPI · PostgreSQL · WebSocket
Backend & APIs
Python, FastAPI, PostgreSQL, real-time systems. Built for production products, not just demos.
Web Applications
Modern web apps and marketing sites. Responsive, fast, built to ship.
model.predict(x) tensor.to(device) inference.run() output = model(x) result.export()
On-Device ML
Machine learning that runs on the device. Smart features without cloud dependency.
What’s Different
Two people talking

I’ve been through the full cycle myself. Product, marketing, distribution, support. That experience shows up in how I build.

Checklist with pen

I focus on what moves the product forward, not just checking off features.

Hands coding at monitor

I build like it’s my own product, because I know what it takes to maintain one.

Rocket launching

I stay involved after launch. Shipping is the starting point, not the finish line.

Have a project
worth building?

I work project-based, fixed price, typically 4–12 weeks. I’d love to hear about it.