Kerem Aydın Güven

I turn ideas into software people use every day.

I build AI products, web apps and After Effects tools. I handle most of it myself, from the first idea to the live build.

See the work Let’s talk

Products

Products I build and run.

I build my software from start to finish. These are live right now; the small screens are drawn in code, and the links take you to the real thing.

AI · developer tools

PromtExpress

A hybrid AI prompt engine.

  • You describe your intent.
  • You get a prompt tuned for ChatGPT, Claude, Midjourney and 60+ models.
  • Open SDKs and a CLI for developers.

AI · SaaS · Open SDK · CLI

promtexpress.com

AI · WhatsApp · small business

WpAsis

A WhatsApp AI assistant for businesses.

  • Auto-replies around the clock.
  • It takes appointments and bookings.
  • Its answers are based on what’s written on the business’s own website.

WhatsApp Cloud API · Next.js · Redis · RAG

wpasis.com

AI · e-commerce

Crawza

AI-run e-commerce.

  • Launch a store in minutes with no code.
  • AI handles marketing, SEO and WhatsApp sales in 30+ languages.
  • Ready-made templates you edit by dragging and dropping, on your own domain.

E-commerce · SEO agents · Next.js

crawza.com

AI · legal tech

İctihatAI

AI legal analysis for Turkish law.

Semantic search across case law, with free AI analysis of your situation.

FastAPI · pgvector · Next.js

ictihatai.com

B2B · sales automation

Databitro

B2B lead generation with a WhatsApp AI assistant.

Automated discovery and first outreach.

Node.js · WhatsApp API · AI

databitro.com

Capabilities

Work we can do together.

AI & LLMs

From prompts to RAG and semantic search, I put AI into products in a way that actually helps the people using them.

OpenAI · Anthropic · Gemini · pgvector

SaaS products

Sign-ups, plans, payments, admin panels. Whatever it takes to turn an idea into a product that earns money.

Next.js · Node.js · PostgreSQL · Redis

Web & e-commerce

I build websites and web apps from scratch, including the interface, backend, SEO and deployment. I also make sites for local businesses.

TypeScript · React · SEO

Automation & WhatsApp

If a project needs it, I add AI or a WhatsApp integration: assistants that reply, take appointments and sell.

WhatsApp Cloud API · Python · FastAPI

Video & motion

Editing, motion graphics, VFX and colour grading in After Effects and Premiere Pro, for social videos and product promos.

After Effects · Premiere Pro · Motion graphics · VFX

Games & 3D

Interactive 3D scenes and game mechanics in Unreal Engine 5, and Minecraft mods with Fabric.

Unreal Engine 5 · C++ · Blueprint · Fabric

Open source & client work

What I share on GitHub and what I build for clients.

promtexpress-oss

TypeScript/Python SDKs, a CLI and a prompt library for PromtExpress. MIT.

GitHub ↗

durust

A Claude Code skill that audits Claude’s own sycophancy and position drift.

GitHub ↗

SoundFx

Automatic sound design for video edits: SFX by cuts, motion and beats.

GitHub ↗
Home page of the Madgold İmitasyon online store

Madgold İmitasyon

The online store of a large imitation jewellery shop. The products come first, and it works just as well on phones.
Home page of the Corax LED Light company website

Corax LED Light

The company site of Corax, who make fibre-optic lighting and pixel LED systems.

About

Who is Kerem Aydın Güven?

I’m a computer engineer and I work remotely from Türkiye. I run a software studio called Webitro, and every product on this page came out of it. Code is only part of the job for me: designing the product, connecting payments, setting up servers and keeping everything running after launch are mine too.

Alongside the products I keep a few side projects under the SpicesFire name: SpicesFX, an After Effects panel that makes editing less repetitive, and Araz, a Minecraft horror mod that learns by watching the player. I also take a lot of photos wherever I travel.

Contact

Let’s build something that ships.

A product idea, a website, a collaboration. Write through the form or straight to my email. I usually reply within a day.

keremaydinguven@gmail.com