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Bessta

Things I build,and things I amstill building.

Bessta is a one person workshop. Native Mac and iOS apps, browser tools, and software for making sound. Four of them you can use today. The other four you can watch being made.

01

Everything I have made

Eight projects, eight of them usable today. Each one opens into how it works and why it exists.

01In beta

Calister

Draw it exactly, then paint it freely

A Mac design tool with two halves that never get in each other's way. In Sketch you draw with rules: this edge is 40 mm, these circles share a centre, that gap follows a variable, and the drawing keeps every promise while you change it. In Design you paint what the lines make, with fills, strokes and gradients, the way an illustrator would.

Platform
macOS app
Started
2026
Built with
Swift, SwiftUI, AppKit, Core Graphics
Open Calister
02Live

iou

A currency for any group that needs one

Make a network, invent a currency, invite people, and start sending. iou does not decide what the points mean. Stars for chores, a travel kitty, rewards at work. The engine underneath stays the same; only the story on top changes.

Platform
iOS & Android app
Started
2026
Built with
React Native, Expo, TypeScript, Supabase
Open iou
03In beta

Durigo

A living map of where the good durian is

Durian is seasonal, hyper-local, and sold from trucks that move. Durigo turns scattered word-of-mouth into a shared map of sightings, prices and reviews, tied to real places, so you know what is available right now, not last season.

Platform
iOS & Android app
Started
2026
Built with
React Native, Expo, TypeScript, Supabase
Open Durigo
04In beta

Locall

Every phone in the room becomes a microphone

Point several iPhones at a conversation and Locall turns them into one synchronised multi-track recorder. Each device records its own clean local track; afterwards the tracks are aligned to within a fraction of a sample and merged. No cloud, no server, no room mic compromise.

Platform
iOS & iPadOS app
Started
2026
Built with
Swift, SwiftUI, Network framework, AVAudioEngine
Open Locall
05In beta

Theremin

Play music with thin air

Hold a finger up to the front camera and play. Raise it for higher notes, move it sideways for louder ones, make a fist to go quiet. Five sounds, Auto-Tune for people who cannot sing either, and a Duet Mode where each hand is its own instrument.

Platform
iOS & iPadOS app
Started
2026
Built with
Swift, SwiftUI, Vision, AVAudioEngine
Open Theremin
06Live

Undertone

A node-based sandbox for making sound

Wire oscillators into filters, filters into maths, maths back into pitch, and listen to what falls out. Undertone is a patchable audio playground that runs entirely in the browser. No install, no DAW, no rules about what you are supposed to be making.

Platform
Web app
Started
2026
Built with
Next.js, React, TypeScript, Web Audio API
Open Undertone
07Live

Fulltime

A timer you never have to look at

No start button to aim for. Press anywhere on the screen and the timer runs; press anywhere again and it stops. That is close to the whole app, and that is the point.

Platform
iOS app
Started
2025
Built with
Swift, SwiftUI
Open Fulltime
08Live

Yatzy

The table game, on one screen or eight

Roll, hold what you like, fill every box, chase the bonus. Up to eight people can share one screen or each play from their own phone in an online room, and a quiet round on your own works just as well.

Platform
Web app
Started
2026
Built with
Next.js, React, TypeScript, Tailwind CSS
Open Yatzy
02

A one person workshop

Who makes all of this, and with what.

Portrait of the person who runs Bessta
The whole staff of bessta.com, on a day off.

Everything here got started because I wanted the thing to exist and nobody had made it yet. Or maybe someone already had, but I wanted to make it anyways.

These are the languages and frameworks the projects above are built with, grouped by where they run.

Tools in rotation

Apple platforms
Swift · SwiftUI · AVAudioEngine · Accelerate · AppKit · Core Graphics · Network framework · vDSP · Vision
The web
TypeScript · Next.js · React · Tailwind CSS · Web Audio API
Cross-platform
Expo · React Native
Behind it
Supabase
Elsewhere
Cloudflare Durable Objects · Motion
03

Got something that ought to exist?

Ideas, collaborations, a bug in something of mine, or wanting early access to whatever is next. It all lands in the same inbox, and I read it.