AuDHD and the Internet

You are AuDHD. Your brain wants two things at once that most people get to want one at a time. You want the new shiny thing AND the order it disturbs. You want the deep dive AND the consistent routine. You want stimulation AND quiet. You have a tab open that you opened four hours ago for a thing you haven't looked at yet, and you also can't close it because that would feel wrong.

Yeah, we get it. We built a browser for that.

I'm Pascal. I built Horse Browser because my brain works the way yours probably does, and standard browsers were quietly making it worse for thirty years. Two years and several thousand paying users later, AuDHD adults are one of the audiences that feel most at home here¹. The reasons are specific, and this page lays them out.

AuDHD is the everyday shorthand for the overlap of autism and ADHD in the same person. It's not a separate diagnosis. It's the lived experience of having both diagnoses, or both traits, at the same time. Estimates put the comorbidity at 50 to 80 percent of autistic adults also meeting ADHD criteria, depending which study you read².

The reason it's worth its own word is that AuDHD doesn't feel like ADHD plus autism stacked on top of each other. It feels like both halves talking to each other, often at cross purposes:

If reading that list felt slightly upsetting in a "stop reading my mind" way, you're probably AuDHD. The mainstream internet was not built for the brain having all six of these conversations at once.

Browsers ask you to do two things that AuDHD specifically struggles with at the same time:

So the AuDHD adult opens Chrome, and inside ten minutes the ADHD half has thirty tabs going and the autistic half is silently distressed because none of them are in the right place. No setting fixes this. The tab bar is not capable of being in the right place. There is no place. That's the design.

Horse Browser replaces tabs with Trails. When you click a link, the page you came from doesn't disappear. It branches. Visually, in a sidebar. Every page stays where you left it. Every path is traceable, collapsible, and yours.

This works for the ADHD half because nothing has to be remembered. Working memory is no longer the load-bearing cognitive function. The branching is on screen.

This works for the autistic half because the sidebar has structure. Pages live in the order you opened them. They have parents. They have children. They can be renamed, reordered, locked, collapsed. The structure persists. Open Horse tomorrow and your trails are exactly where you left them, including the sub-trail you opened at 11pm and never went back to.

Two halves, one feature, no compromise. That's the part that took two years to get right.

Try Horse Browser free for two weeks. Card upfront, cancel any time before it bills. No sales call, no "schedule a demo," no growth survey.

Most AuDHD-adjacent software is built for one half of the brain at a time, and the other half gets nothing.

ADHD-only tools like Pomodoro timers and distraction blockers solve a willpower problem the AuDHD adult often doesn't have. The autistic half is more than capable of focusing for six hours; the ADHD half just needs the right entry point. Forcing 25-minute sprints isn't help, it's interruption. Pomodoro is a great technique for some people. It is rarely the right tool for AuDHD.

Autism-only tools like rigid task managers, low-stimulation modes, and sensory-friendly readers solve the structure side beautifully and ignore that the ADHD half wants to follow a link mid-sentence. Writers and developers who only have autism love them. Be Focused, OmmWriter, iA Writer, Things, all genuinely great apps. They just don't help when half your brain is also mid-tangent.

"Neurodivergent" tools that try to do both usually pick the lowest-common-denominator approach: a checklist, a simplified UI, a friendlier color scheme. Helpful for some, but they're solving "your brain is overwhelmed, so here is a smaller box to live in." Horse's view is the opposite: your brain isn't overwhelmed, it's working. The browser was the box. Make the browser bigger and the brain stops feeling cramped.

Not a diagnostic tool, just a list of patterns we hear all the time from AuDHD users:

If three or more of those landed: you're in the right place.

A growing collection of pieces about specific AuDHD experiences online, what makes them hard, and how Horse handles them:

If you only have ADHD, the ADHD hub is the place to start. If you only have autism, or you're not sure where you sit, the broader neurodivergent hub covers the wider territory. The cluster pages on autistic burnout, PDA, stimming, and rejection sensitive dysphoria are all relevant to AuDHD readers, often more than to single-diagnosis readers.

Horse Browser will not solve AuDHD. There is no such thing as "solving" AuDHD; both halves are part of how the brain works, and both halves contribute things the world needs. What Horse does is take away the part of the daily grind that was the browser's fault all along. The browser stops asking you to keep both halves quiet. Both halves get to think out loud at the same time.

That sounds small. It isn't.

Try it free for two weeks. If your brain doesn't feel a quiet relief inside the first day, just don't buy. We'll still like you.