Reaction vs LazyWork vs Trick Tack vs mouse jigglers: an honest comparison

The four classes, and why the class decides everything

Search for a mouse jiggler and you get a jumble of apps, websites, USB gadgets and scripts that all promise the same thing: keep the session alive while you step away. They are not variations on one product — they are four separate classes, and the class you choose sets a hard ceiling on what is even possible. Reach comes first, price second.

Two questions sort almost every option. Can it install software on this machine, or not? And does it need to produce input across the whole desktop, or only inside one window? Those two answers point you straight at a class before any feature list or price tag enters the picture.

• Desktop simulators — apps that install and move the real cursor and keyboard (Reaction, LazyWork, Trick Tack).
• Online jigglers — a web page that animates a cursor inside its own browser tab.
• Hardware dongles — a USB device that rocks a physical mouse from outside the computer.
• DIY scripts and keep-awake tricks — AutoHotkey, PowerToys Awake, caffeine utilities you wire up yourself.

Desktop simulators: Reaction, LazyWork and Trick Tack

All three install on the machine and generate real input across the whole desktop: cursor movement, keystrokes, scrolling and app switching. Because they run at the operating-system level, the motion they create is genuine system input, which is why this class is the one anti-idle presence actually depends on — the input a desktop tracker samples is the input these tools produce.

Where they diverge is packaging. Reaction ships as a single plan with everything included — the human-like behaviour, the configurable range and idle-only activation are not held back behind a higher tier. LazyWork splits its capabilities across three tiers, and the more natural, varied behaviour sits in its top Elite plan rather than the entry one. Trick Tack belongs to the same desktop-simulator class and competes on the same axes. Pricing and tier names shift over time, so treat the figures here as a snapshot and confirm the current numbers on each vendor's page before deciding.

• Reaction: one plan, everything included, runs on Windows, macOS and Linux.
• LazyWork: three tiers, human-like behaviour in the top Elite plan, Windows and macOS.
• Trick Tack: same desktop-simulator class, similar feature axis.
• Common to all three: real system input, idle activation, uninstall to remove.

What "human-like" actually means

Within the desktop class, the single feature worth comparing is the shape of the input, not the fact that input happens. A tool that shoves the cursor along one dead-straight line at a fixed interval produces "activity" in the raw sense, but it is the kind of flat, mechanical rhythm that patterns-aware trackers treat as an outlier — this is why some jigglers get flagged while others do not, and it is a matter of rhythm rather than hardware.

Human-like behaviour means varied cursor paths with curves and pauses, an uneven keyboard cadence, the occasional scroll or window switch, and an activity level that drifts inside a range instead of pinning to one value. A real person hovers between roughly 60 and 85 percent with natural dips and climbs; a flat, always-on 100 percent is the pattern that stands out. This is the axis on which desktop tools genuinely differ, and it is worth more than a couple of dollars of price difference.

Online jigglers live inside a browser tab

Free web tools such as movemycursor.com install nothing — you open a page and it animates a cursor on screen. That sounds ideal until you hit the wall built into every browser: a web page can only act inside its own tab. It cannot move the system cursor across the desktop, so anything watching activity at the operating-system level simply sees no input at all.

In practice this class only helps in the narrow case where whatever you care about lives inside that one browser tab and reads movement within it. For a desktop time tracker that samples system-wide input, an online jiggler contributes nothing. The appeal is that it is free and requires no install; the limit is that its reach ends at the edge of the tab.

Hardware dongles move the mouse physically

A USB dongle sits between your mouse and the machine — or holds an optical mouse over a slowly moving surface — and nudges the pointer from outside the computer. Nothing is installed, which is its whole reason to exist: on a locked-down machine where you cannot add software, a dongle is often the only option left, because it never touches the operating system at all.

The trade-offs are real. The motion is usually one hard-wired pattern you cannot tune, it moves only the cursor (no keystrokes, no scrolling, no app switching), and it works only while the physical mouse stays on it. You also pay once for a device rather than subscribing. If you can install software you generally get a configurable range and idle-only activation instead; if you cannot, the dongle's no-install nature is exactly what makes it viable.

Price and trial, side by side

Cost only means something once you line it up against reach and against the trial that lets you verify the tool before paying. Among desktop simulators, Reaction is a flat $7 a month or $50 a year with a 14-day trial and every feature included, so the price you compare is the price you actually get. LazyWork spans roughly $7.99 to $49.99 a month across its tiers, with a 7-day trial on the lower ones and the natural, human-like behaviour reserved for the top Elite plan — which changes what "the LazyWork price" really means depending on which capability you need.

Online jigglers are free but reach only their own tab; hardware dongles are a one-time purchase with no trial and a fixed pattern. The useful comparison is therefore never price alone — it is price for a given reach, and whether you can confirm the tool does what you need during a trial before any money changes hands.

• Reaction: $7/month or $50/year, 14-day trial, one all-inclusive plan.
• LazyWork: ~$7.99–$49.99/month, 7-day trial on lower tiers (top tier none), human-like in Elite.
• Online jigglers: free, no install, tab-only reach.
• Hardware dongles: one-time cost, no trial, single fixed pattern.

Which class fits you

Start from the constraint, not the brand. If you cannot install software on the machine, a hardware dongle is realistically your only route. If you can install and want a natural, adjustable level of presence across the whole desktop, a desktop simulator is the right class — and within it, compare on human-like behaviour and trial length rather than the raw monthly figure. If your concern is genuinely limited to one browser tab, a free online jiggler may be all you need.

For most people on a desktop time tracker the honest answer is the desktop-app class, because it is the only one that produces varied, system-wide input you can keep inside a range you set. From there, the longest trial and the most human-like behaviour are what separate the options.

Where Reaction fits

Reaction sits in the desktop-simulator class and does one narrow thing well: it keeps a natural, human-like level of presence during the stretches when you step away from the keyboard but the session should stay alive — the coffee, the stretch, the school run. It uses varied cursor motion, a living keyboard rhythm and occasional scrolling and window switches within a range you set, on Windows, macOS and Linux, with everything included in one plan and a 14-day trial to check it before paying.

It starts only when the computer is genuinely idle and steps aside the moment you touch the mouse, so it fills real breaks rather than running over your work. It cannot make low-input work look like high-input work while you are actually at the desk — that is a limit of the metric, not a missing feature. Use it within your agreements; see the acceptable-use note below.