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Independent developer · 10+ years

I build beautifully simple apps.

Guillaume Voisin — developer & maker. I design and ship calm, privacy-first software for Apple platforms and the web.

See the work Get in touch
Philosophy

Turning complexity into calm — privacy-first, beautifully minimal, and built to last.

Selected work

Products I've
designed & shipped.

01macOS · iPad · iPhone
Plume app icon

Plume

Local-first journaling for the AI era. Capture every day with clarity and calm — your thoughts stay on your device, encrypted and private.

  • Privacy-First
  • AI Introspection
  • Insights
  • iCloud Sync
View project
Plume today view with journal and AI summary Plume insights with writing stats and word cloud Plume AI introspection coach conversation
02Mac · iPhone
Moto app icon

Moto

Habits that adapt to your rhythm. A calm, distraction-free tracker with forgiving streaks — because life doesn't follow rigid schedules.

  • Forgiving Streaks
  • Voice Input
  • SwiftUI Native
  • ADHD-Friendly
View project
Moto today view with habits Moto last 7 days overview Moto analytics and trends Moto widgets on home screen
03iPhone · Web
Mingle Maps app icon

Mingle Maps

Discover events happening around Budapest. A map-based experience that surfaces concerts, meetups, and happenings — so you never miss what's going on in your city.

  • Event Discovery
  • Map View
  • Budapest
  • Real-Time
View project
Mingle Maps event list view Mingle Maps map view with pins
04Web
Teachee logo

Teachee

On-the-fly conversational training for language teachers. One click to record, translate, and generate practice materials.

  • 30+ Languages
  • AI Voice
  • Anki Export
  • Real-Time
View project
0 teachers worldwide
About

Small team of one.
Obsessed with the details.

Guillaume Voisin
Guillaume Voisin Developer & Maker
0+ Years building SaaS and apps people love
0 Products shipped & maintained today
How I work
  1. 01Local-first. Your data lives on your device.
  2. 02Fewer features, finished properly.
  3. 03Native where it matters, web where it scales.
Open source
Murmur Riffle Focus

Tiny macOS utilities I build for myself and give away.

Explore
Contact

Let's build
something together.

contact@guillaumevoisin.com