Development with AI.
Every project is built with AI running through the whole process, from the first idea to the finished build. It is the core of how the studio works, not an extra bolted on the side.
About
Hi, I'm Fabian.
I design and build native iOS software on my own, with AI as a core part of how I work. Tooljot is the studio I ship it under, built around a simple idea: that a single developer, working closely with modern AI, can take a product from first sketch to the App Store and hold the quality of a much larger team.
SoloNative iOSAI first
The approach
Solo, with AI woven in.
Solo by design.
Design, code, interface, the lot. One person, no team, on purpose. When every decision runs through one head, nothing drifts, and the work stays coherent from the first idea to the last pixel.
AI in the loop.
AI runs through the whole build, not bolted on at the end. It explores directions, writes and reviews code, and catches what I miss. I steer it and own every line that ships. It is the leverage that lets one person move like a team.
The bar stays high.
When AI carries the grunt work, the limit is no longer how many hands you have. It is how clearly you think and how high you set the bar. So I keep it high, and nothing ships with the corners cut.
Native, end to end.
Native iOS, written in Swift on Apple's own frameworks. No cross platform shortcuts, no website hiding in a wrapper. Software that belongs on the device, and feels built rather than assembled.
Built at the right pace.
A few things done properly beats a pile done halfway. Each project sharpens the next, and the studio grows only as fast as the work earns.
What I build
Native iOS, end to end.
A few kinds of work, all designed, built, and shipped by one person, with the same standard applied to each.
Native iOS games.
Well made iOS games built around a single satisfying idea. The kind you pick up for a few minutes and put down without feeling pulled back.
The studio itself.
Everything that carries the Tooljot name, including this site, is designed and built in house, so the whole thing feels like it came from one place.
Stack
What I build with.
Native Apple frameworks, modern Swift, and AI tooling running through the whole workflow rather than sitting off to the side.
Claude Code
AI pair, daily driver
Local models
Private and local
Swift
Language
SwiftUI
Interface
SpriteKit
2D + physics
SwiftData
Local storage
Xcode
Build & ship
How I work
The standard, every time.
AI as leverage, not autopilot.
I build with AI through the whole process, but I read, understand, and own everything that ships. The judgment stays human. AI is what lets one person move like several.
Native, end to end.
Swift and Apple's frameworks all the way down. No cross platform layer, no website hiding inside a wrapper. The software should feel like it belongs on the device.
Finished, not just started.
Starting things is easy and finishing them is not. I focus on shipping complete, working products rather than collecting half built prototypes.
Respectful by default.
Software that does its job without tracking you, nagging you, or inventing reasons to pull you back. It should earn its place on your phone and then stay out of the way.
FAQ
Common questions.
What is Tooljot?
Tooljot is the studio of Fabian Mehlhorn, an independent developer who builds native iOS software with AI. It is a solo operation, where AI is a core part of the process from the first idea through to release.
What does Tooljot build?
Native iOS software, built in Swift with Apple's own frameworks and developed with AI at every stage, from the first idea to the shipped build. Everything is designed, engineered, and released end to end by one person.
What does building with AI actually mean here?
AI tooling runs through the whole workflow, from exploring ideas to writing and reviewing code. Every decision that ships is made and owned by me. AI is the leverage that lets a single developer deliver complete, polished products at a serious pace.
Is it really just one person?
Yes. The design, the engineering, the interface, and the release are all handled by me. AI is the toolkit that makes working at this scale possible without a team behind the name.
How can I follow the work or get in touch?
The contact page is the best way to reach me, and I read and reply to everything personally. It is also the place for press, questions, or feedback on anything the studio has built.
Say hi
Press, players, partners.
I read every message and reply personally. If you have a question, a bug, or an idea worth building, send it through.
Contact the studio