Hi, I'm Heri Kiswanto
I build web, mobile, and desktop apps — and occasionally write about the process on this blog.
Featured Projects
Retrova: AI Photo Style
An Android app that turns a portrait into dozens of styles — 80s photos, anime, action figures — by tapping one card instead of writing a prompt, and the face stays yours.
PDF Tools: Merge & Compress
Ten PDF tools that run entirely on the phone — merge, split, compress, lock — for anyone who would rather not upload a private document to someone else's server.
Istiqomah: Atomic Habit
A daily worship tracker combining prayer schedules, qibla direction, Quran, and the Hijri calendar with atomic-habit principles — 100% on-device, no accounts and no server.
PT. Amanat Multi Karya
A bilingual company profile website for PT. Amanat Multi Karya — a general contractor & supplier based in Cilacap — with a company profile, service lines, and a project portfolio.
Siap TBS LPDP
An Android app for practising the Scholastic Aptitude Test (TBS) used in Indonesia's LPDP scholarship selection — verbal, quantitative, and problem-solving — with timed simulations, no account, and offline support.
Latest Posts
When an Idea Meets Claude Max
A few days with Claude Max were enough to change how I see execution, scarcity, and what is left of human creative power.
My Checklist Before Connecting a New MCP Server to a Client Codebase
MCP servers are the new plugin ecosystem for AI coding agents, and the security advisories about them this year have been serious. Here's the actual routine I run before wiring one in.
I Tried Shipping Passkey Login on a Client Project: What Actually Happened
Passkeys have full browser and OS support now, but adoption is reportedly stalling. Here's what happened when I actually added them to a real client app instead of a demo.