MoofMate
2025An iOS and Android app that helps VanMoof owners do even more with their bikes — live dashboards, component diagnostics, custom settings and a higher speed limit.
Cordova JavaScript Bluetooth LE
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Available for work
Hey, I'm Tim Kunst
A Software developer and cyber security student
I build apps for iOS and the web — from a companion app for VanMoof bikes to a Dutch tax calculator. Studying cyber security, which means I think about how things break as much as how they're built.
Selected work
Hertzy
2025A precision tone studio for iOS — pure tones, binaural beats and isochronic pulses from 90 to 852 Hz, layered over ambient soundscapes for focus and sleep.
iOS SwiftUI Audio iCloud
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Belastingmate
2025A Dutch income tax calculator for people with more than one income stream — logs salary, profit and other earnings, then computes box 1 and Zvw the way the Belastingdienst rounds it.
iOS SwiftUI Local-first
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OTPartner
2025A companion for OTP Auth — a browser-based tool for working with one-time password authentication.
React TypeScript Vite
live ↗
About
I'm a software developer and cyber security student based in the Netherlands. Most of what I build starts as something I wanted to exist — a bike app that does more than the official one, a tax calculator that actually matches what the Belastingdienst charges.
Security studies shape how I work: privacy by default, local-first data, and no accounts unless a feature genuinely needs one.
- Swift
- SwiftUI
- TypeScript
- React
- Astro
- Tailwind
- Node.js
- Cloudflare
Questions
Who is Tim Kunst?
Tim Kunst is a software developer and cyber security student based in the Netherlands, building applications for iOS and the web. Tim Kunst is the developer behind MoofMate, a companion app for VanMoof electric bikes, and Belastingmate, a Dutch income tax calculator.
What apps has Tim Kunst built?
Tim Kunst has built four applications: MoofMate, an iOS and Android companion app for VanMoof electric bikes; Hertzy, an iOS tone and soundscape studio; Belastingmate, a Dutch income tax calculator for people with multiple income streams; and OTPartner, a browser-based companion for OTP Auth.
What is MoofMate?
MoofMate is an iOS and Android app that gives VanMoof electric bike owners more control than the official app. MoofMate connects directly to the bike over Bluetooth Low Energy to offer live ride dashboards, component diagnostics, custom pedal assistance settings and a speed limit of up to 37 km/h. It supports the S2, S3, S5, S6, A5 and X-series bikes.
What technologies does Tim Kunst use?
Tim Kunst builds iOS apps with Swift and SwiftUI, and web applications with TypeScript, React, Astro and Tailwind CSS. Backend and deployment work uses Node.js and Cloudflare.
Is Tim Kunst available for work?
Yes. Tim Kunst is currently available for software development work. The fastest way to get in touch is by email at tim@timkunst.nl.
How can I contact Tim Kunst?
The fastest way to reach Tim Kunst is by email at tim@timkunst.nl. Source code and open projects are published on GitHub at github.com/timthebeastnl.
Contact
The fastest way to reach me is email.
tim@timkunst.nl