Independent maker

I build software and ship it.

Niels Brinch, independent developer. Mostly music software and creator tools, plus a game. The main project is 4i: it turns a song into a music video, scene by scene.

Try 4i free See what I've shipped
4i.app PageRain iOS · macOS · Windows Gyxi · .NET · Azure
Flagship · Research 4i.app

Turn any song into a music video, scene by scene.

Sync visuals to your music with full creative control, or generate original songs, build visual stories, and edit faster with 30+ free image, video and audio tools.

Created by Hello_Satan with 4i.app
REC · 44.1kHz · STEREO
CREATE MUSIC · 0.1 credits/song

AI song generation

Generate full songs from a title, lyrics, and style prompt. Instrumental or vocal, with every version kept together in your library.

Create a song →
DIRECTOR MODE · per finished minute

Music video editor

Upload a track and shape the visuals scene by scene. Per-scene prompt & style overrides, lyrics-locked timing, regenerate any scene.

Start a music video →
Companion apps
4i Player screenshot

4i Player

Play music and music videos from independent artists, by genre, album, artist and playlist. Publish your own.

Download on the App Store ↗ Also on iPad & Mac · desktop below ↓
4i Music Maker screenshot

4i Music Maker

A pocket AI studio. Arrange sections, pick instruments, set mood tags, write lyrics, instrumentals or vocals. 5 free songs to start.

Download on the App Store ↗ No subscription · credits never expire
On the desktop

4i Player for Windows

DESKTOP APP · MICROSOFT STORE

The full 4i Player experience on your PC: stream music and music videos from independent artists in a native desktop window, with Sonos playback support.

Get it on the Microsoft Store ↗
4i Player
Drop a 4i Player desktop screenshot (16:10)
30+ FREE TOOLS  ·  Generate Images  ·  Video Joiner  ·  Audio Extractor  ·  Converter  ·  Image Cropper  ·  Edit Audio Length  ·  Animated Movie  ·  Free Video Editor  ·   30+ FREE TOOLS  ·  Generate Images  ·  Video Joiner  ·  Audio Extractor  ·  Converter  ·  Image Cropper  ·  Edit Audio Length  ·  Animated Movie  ·  Free Video Editor  ·  
Explore 4i →
Music · Out now Spotify

Pixel Pusher, my album.

An album I made, on Spotify. Built with the same tools I work on.

Open in Spotify ↗
Product pagerain.com

Run 20+ artists from one dashboard.

The social publishing buffer built for music managers. Keep every artist's queue full, draft in each voice, and spot who's about to run dry before the feed goes quiet.

01See who runs dry first, with the roster sorted by urgency.
02Write in every artist's voice, without one flat AI tone.
03Tailor once, publish everywhere: IG, X, Facebook, 4i.
pagerain.com/app/overview
PageRain
Overview Agent Billing Settings 2.0 cr
Artists
10 artists in your roster · reservoirs synced live
+ Create artist
Artists tracked
10
Inside deadline goals
6
Need attention
4
Posts queued, all artists
241
Sort Runway: soonest first ▾ All 10 ● Critical 2 ● Low 2 ● Healthy 6
0
Paper Astronauts
@paper_astronauts
Queue is empty · 0 days left
0
Bitter Lake
@bitter_lake
Queue is empty · 0 days left
6
Gold Radio
@gold_radio
Low · 6 days left
7
Cassette Tigers
@cassette_tigers
Low · 5 days left
22
Neon Harbor
@neon_harbor
Empties Fri, Dec 11 · 141 days left
25
Ivory Pilots
@ivory_pilots
Empties Sun, May 30 · 310 days left
33
Ruby Transit
@ruby_transit
Empties Mon, Mar 9 · 228 days left
36
Velvet Choir
@velvet_choir
Empties Sat, Jan 16 · 176 days left
52
Echo Field
@echo_field
Empties Thu, Jul 2 · 343 days left
60
Hollow Coast
@hollow_coast
Empties Fri, May 28 · 308 days left
Drop a Space Mazing screenshot (4:3)
Game · Family iOS · Ages 6–8

Travel space, solve riddles, find Planet X.

A cosmic adventure for young astronauts: fly a customizable spaceship, navigate swirling mazes, help friendly aliens, and piece together the map to the legendary Planet X. No timers, no pressure, just imaginative exploration.

Download on the App Store ↗
Also building

Lab experiments & utilities

DATABASE-AS-A-SERVICE

Gyxi

Production-ready DBaaS built on Table Storage: high capacity, stable performance, low cost.

gyxi.com →
DEVELOPER UTILITY

Login Broker

Drop-in social login via Google, Facebook, LinkedIn, Microsoft, GitHub and Apple.

login.broker →
IN PROGRESS

Charity Casa

Vacation apartments rented out with partial payment via charity donations. Building now.

About

Independent developer. I architect AI-driven software on .NET and Azure, and ship my own products under Gyxi. Most of it starts as an experiment.

Understanding Quality Speed