INDEPENDENT iOS DEVELOPER · AACHEN
I'm Tobias Huppertz. I build small, privacy-first iOS apps — no accounts you don't need, no clutter you didn't ask for.
QR code designer
QR4all turns the grey pixel tile into a code that fits your design: 50+ shapes for pixels, eyes and pupils, free colours and gradients for every area, plus your own logo or a watermark in the centre. A contrast warning helps you keep readability in view.
Prompt manager
Prompt Organiser is the library for everyone who works with AI every day. Save your prompts with a title, description and category, keep AI responses and notes right beside them, and send a prompt to Claude, ChatGPT & co. with one tap. Every change is versioned automatically — and everything stays local on your device.
Documentation camera
Foto Notes is a camera that burns your note, date, time and GPS location straight into the image the moment you press the shutter. No post-editing, no separate notebook — the details sit right in the photo and stay in every copy.
Loyalty cards & coupons
Pass4U keeps your loyalty cards and coupons in one place: create, import, manage and share them with friends. All common barcodes and QR codes are supported and show even without internet.
Contact
I read every message. Send a short note below — or reach me directly. Prefer encryption? The PGP key is one tap away.
