How it works

It learns your hand by itself. Then a calmer arrow.

No settings homework and no manual to study. Here is the whole idea, in plain words.

First, it learns your hand.

When you first open TrueCursor, you simply keep using your Mac. There is no calibration step and nothing to configure: it learns your hand from ordinary movement, and the tuning settles within the first minute.

With no setup at all, it learns two things: the rhythm of your shake, and the speed of the movements you make on purpose. Everyone’s pattern is different, that is why it learns yours instead of using one setting for everybody.

From then on, it can tell the difference between the two. The shake gets absorbed. The movement you mean to make goes through, at nearly full speed.

Your hand changes through the day, medicine wears off, hands get tired. The app keeps quietly adjusting, within safe limits, so the help fits your hand at 9 in the morning and at 8 at night.

Under the hood, this is machine learning: a model trained on the movement patterns of real tremors, running privately on your Mac. It fine-tunes itself to your hand, and nothing about your movement ever leaves the machine.

The four kinds of help

Four layers that work separately.

Each one can be turned on or off on its own. Use what helps; ignore the rest.

Movement

A steady arrow

The shake is taken out of the arrow while your real movement passes through. This is the heart of the app.

Clicks

Protected clicks

Accidental double-clicks are ignored. If the mouse slips a little while you press, the click stays where you aimed instead of dragging something away.

Targets

Buttons that meet you halfway

A soft outline appears on the button you are near, and your click lands on it, even the tiny ones, like the little x that closes a tab. If pressing the mouse button is the hard part, there is an option that clicks for you when you rest on a target for a second.

Scrolling & keys

Straight scrolling, calmer typing

Pages scroll straight instead of drifting sideways. And if your keyboard sometimes types a letter twice, there is help for that too.

Recorded from the engine

The things that are hard, made easy.

These are real recordings from our test bench. The copper thread is where the cursor would be without help: the actual path of a shaking hand. The green line is where TrueCursor puts the arrow instead, on the exact same journey.

Closing a taba 16-pixel target against a 50-pixel shake

Without helpthe hand alone

With TrueCursorthe same hand

On the left, the path of a shaking hand trying to reach the little x: it sweeps an area wider than the whole tab and orbits the target without settling. On the right, the same hand, the same three seconds: the arrow travels up, the x lights, the pointer sits inside it. The difference between hunting and clicking.

Twenty tries at the same small buttoncounted, not illustrated

The same reach, run twenty times with a strong shake, catching the hand at a different point in its wave each time. Copper marks are where the click would land on its own: 0 of 20 hit the button. Green dots are the same twenty attempts with TrueCursor: 20 of 20 landed inside.

Ticking one box in a listneighbors 30 pixels away

Without helpthe hand alone

With TrueCursorthe same hand

The shake alone spans all three checkboxes at once: any of them could get the click. With help, the arrow lands on the one you meant and the neighbors never feel it.

It learns your hand in the first minuteno calibration, just use it

A brand-new install meeting a large slow shake, over two minutes of ordinary use. The line is the share of the shake being removed. Each dashed mark is a moment the app quietly adjusted itself to the hand. There is no setup step; this is the setup.

And you can always get the plain mouse back.

Hold Fn to bypass. Hold the fn key (bottom-left of the keyboard) and the mouse is instantly back to normal, handy for drawing or photos. Let go, and the help returns.
Pause any time. One switch in the menu bar turns everything off and on.
The emergency stop. Hold both ⇧ shift keys for three seconds and TrueCursor shuts itself off completely, even if the rest of the app were frozen.
If the app ever fails, it fails off. Your plain mouse comes back automatically. The help can never trap you.

The best way to understand it is to feel it.

30 days free. No card. No setup at all to set up.

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