Reaction
Behaves like a person
NewA behavior engine varies speed, timing and pauses the way a person does, so the activity looks genuine rather than automated.
Stepping away?
Your computer
stays busy
Reaction drives your mouse and keyboard like a real person — smooth motion, a natural typing rhythm, window switching. An app for Windows, macOS and Linux.
14-day free trial · no charge until day 14 · cancel anytime.
Works with the time trackers you already use
- Hubstaff
- Time Doctor
- Insightful
- WebWork Time Tracker
- Screenshot Monitor
- Apploye
- DeskTime
- Monitask
- ActivTrak
- HiveDesk
- Teramind
- Kickidler
- StaffCop
- Veriato
- InterGuard
Breaks without anxiety
Stepped away for five minutes — and your activity score already dipped?
With a tracker, every short break turns into a small stress: you think twice before even leaving your desk, because the activity drops and the screenshots freeze. Reaction gives you your breaks back: while you are away, a "person" keeps working at your computer — and the moment you touch the mouse, you are in control again.
Step away with peace of mind
- Coffee break
- Stretch and move
- Lunch
- Quick errand
- A call or meeting
- School run
- Rest your eyes
- Just breathe
Reaction
Active
-
You step away
One hotkey and Reaction takes over. Nothing to configure in the moment.
-
It imitates your work
A behavior engine moves the cursor, types and switches windows the way you would — varied timing and natural pauses.
-
You return, it pauses
Move the mouse or press a key and Reaction stops instantly, handing control straight back to you.
App scenarios
A hand-crafted scenario for 50+ apps
When the simulator switches into a window it knows, it runs a scenario written specifically for that app — tabs, panels, scrolling. Every other window gets the universal scenario.
Tabs
Cycles browser and editor tabs back and forth — never a robotic jump.
Sheets, pages and slides
Switches spreadsheet sheets, document pages and presentation slides.
Panels and tools
Collapses and expands sidebars, toggles tools and app sections.
Content scrolling
Scrolls code, pages and playlists at a human pace.
Safe actions only
Every shortcut is verified against the vendor's documentation: nothing gets typed into your files.
The frame always changes
Every action produces a visible change on screen, so the view keeps changing naturally.
Apps with a dedicated scenario
Browsers Google Chrome Microsoft Edge Firefox Safari Brave Opera Opera GX Vivaldi Yandex Browser Zen Browser Chromium + more
Editors, IDEs and dev tools VS Code Cursor Windsurf VSCodium IntelliJ IDEA PhpStorm WebStorm PyCharm GoLand CLion RubyMine DataGrip Rider Android Studio Visual Studio Sublime Text Notepad++ Eclipse DBeaver Tableau + more
Office and mail Excel Word PowerPoint Keynote LibreOffice Calc LibreOffice Impress Outlook Thunderbird OneNote + more
Design and notes Figma Notion Obsidian Postman + more
PDF and media Adobe Acrobat Foxit Reader Sumatra PDF PDF-XChange Spotify VLC + more
Your app is not on the list? Any other window is covered by the universal scenario: scrolling and safe navigation keys.
Features
More than a mouse jiggler: human behavior, not a robotic loop
Reaction does not jiggle your mouse on a timer. It models the behavior of a real person, so every action looks natural instead of a robotic pattern.
Human-like mouse
Smooth cubic-bezier cursor paths with micro-pauses and a natural return — never a robotic teleport across the screen.
Natural keystrokes
Uneven speed, pauses between keys and only safe navigation keys — arrows and page keys, never your documents.
Scroll, click and windows
Occasionally scrolls, clicks and switches windows so the screen keeps changing naturally.
Hidden mode
Runs with no window and no tray icon for a clean, out-of-the-way setup. Optionally rename the process and swap its icon.
Autostart and your band
Launches with your OS and holds the activity level you choose, with natural pauses — any range, not fixed percentages.
How it works
Three steps to a steady presence
Reaction only acts while your computer is truly idle — you stay in control the whole time.
-
Start your trial
Create an account, add a card and start the 14-day free trial. Prefer crypto? Prepay for the period instead.
-
Install and activate
Download the signed build for your OS and paste the license key from your email or account.
-
Stay present
Reaction simulates activity only while the machine is idle. Pause or resume instantly with a hotkey.
Supported trackers
Works with every popular time tracker
Time trackers score activity from keyboard and mouse input. Reaction produces natural input — varied speed and pauses, like a person at their desk — so your activity stays steady.
What the tracker sees
Active working session
Activity
72%
- Live keyboard and mouse input
- Activity percentage in range
- Screenshots change, like a person
- Hubstaff
- Time Doctor
- Upwork
- ActivTrak
- Insightful
- Teramind
- DeskTime
- Clockify
- Toggl Track
- TimeCamp
- Monitask
- Jibble
- WebWork
- Workstatus
- Traqq
- Apploye
- TMetric
- Time Champ
- EmpMonitor
- Controlio
- Kickidler
- We360.ai
- Hubstaff Field
- Screenshot Monitor
Reaction is a presence / anti-idle utility. Use it in line with your agreements.
Download
Download Reaction free — keep your activity up on Windows, macOS and Linux
One subscription covers every platform. Download the signed installer and activate with your key.
Windows
Windows 10 & 11 · NSIS / MSI
Get for WindowsmacOS
Signed & notarized · Apple silicon + Intel
Get for macOSLinux
AppImage / deb · X11 (Wayland degraded)
Get for LinuxReaction is an app for Windows, macOS and Linux
Hotkeys
Instant control
Global hotkeys work even in hidden mode. On macOS, use Cmd instead of Ctrl.
- Pause / resume simulation
- Ctrl 1
- Show the app window
- Ctrl 2
Comparison
Reaction vs LazyWork
LazyWork hides the features you need behind its pricey Professional and Elite tiers. Reaction includes everything in one plan for $7.
The table scrolls sideways — the Reaction column is at the end
| Feature | LazyWork Personal | LazyWork Professional | LazyWork Elite | Reaction All |
|---|---|---|---|---|
| Monthly price | $7.99 | $14.99 | $49.99 | $7 |
| Yearly price | ~$80 | ~$150 | ~$550 | $50 |
| Free trial | 7 days | 7 days | none | 14 days |
| Cursor movement | ||||
| Keyboard activity | ||||
| Scrolling | ||||
| Application switching | ||||
| Mouse clicking | — | |||
| Hidden mode and hotkeys | — | |||
| Browser tab switching | — | |||
| Scheduled run | — | |||
| Multiple computers | — | 1 device | ||
| Custom app name, description and icon | — | — | ||
| Idle-only activation | — | — | — | |
| Human-like, randomized behavior | — | — | — | |
| Hand-made scenarios for 50+ apps | Any app | |||
| Everything in one plan | — | — | — | |
| Platforms | Windows, macOS | Windows, macOS | Windows, macOS | Windows, macOS, Linux |
| Free updates | ||||
| One-click update from the app | — | — | — | |
| Support | priority | always on |
Pricing
Reaction All — one plan, everything included
No tiers and no paywalled features. The single Reaction All plan gives you every feature on every platform, for one price.
Reaction All
Monthly
The only plan — with every feature
$7 /month
Billed monthly. 14-day free trial with a card.
- Human-like, randomized behavior — not a timer
- Human-like mouse, keyboard, scroll & window switching
- Hidden mode, process renaming & autostart with the OS
- Any activity band — you set it yourself
- Windows, macOS & Linux
- 1 device per subscription
- Cancel anytime
Crypto is prepaid for the period — no trial and no auto-renewal.
Reaction All
Best value
Yearly
The only plan — with every feature
$50 /year
Billed yearly — about $4.17/month. Save ~40%.
- Human-like, randomized behavior — not a timer
- Human-like mouse, keyboard, scroll & window switching
- Hidden mode, process renaming & autostart with the OS
- Any activity band — you set it yourself
- Windows, macOS & Linux
- 1 device per subscription
- Cancel anytime
Crypto is prepaid for the period — no trial and no auto-renewal.
14-day free trial on the card rail; your card is charged on day 14 unless you cancel. Prices in USD; taxes handled at checkout.
Support
We are always on
Reaction is backed by a real team, not an autoresponder queue. Message us for help with install, tuning it to your tracker, or anything else.
- Fast replies
- Reach out anytime — we usually reply within hours, not days.
- Help with setup
- We will help you dial in the activity band and hidden mode for your tracker.
- Real people
- On the other end is a team that uses Reaction and understands what you need.
Reaction support
Online
Hi! Just installed Reaction — which activity band should I pick for my tracker?
Hey! 55–75% reads most natural. Turn on hidden mode too — here is how to set it up…
Support is typing
FAQ
Questions, answered
What people ask before installing Reaction: detection, trackers, support and pricing.
Why should I use Reaction?
Reaction stops a tracker from marking you "idle" while you are away. It behaves like a real person at the keyboard — moving the mouse, typing and reacting to the screen — so your reports show a steady working session.
Does Reaction run quietly in the background?
Yes. In hidden mode it runs with no window and no tray icon, so it stays out of your way. You can optionally rename the process and set a custom icon to keep your app list tidy.
How does it keep me from showing as idle?
Trackers measure activity from keyboard and mouse input and take screenshots. Reaction feeds them the exact signal a person produces: varied speed, natural pauses and smooth motion — so your session reads as genuine, ongoing work.
Which time trackers does Reaction work with?
We have tested Reaction with every popular tracker — Time Doctor, Hubstaff, ActivTrak, Upwork, Insightful, Teramind, DeskTime and many more. The full list is in the "Supported trackers" section.
Does Reaction track anything?
No. Reaction does not upload or collect any data from your computer. The only network call it makes is to check that your license key is valid.
How is this better than a physical mouse jiggler or jiggler software?
Trackers have learned to spot random mouse twitches and clicks fired on a timer. Reaction does not jiggle the cursor — it models human behavior, so the activity looks genuine rather than robotic. And it is an app, not a USB dongle: nothing to buy or plug in.
What happens if I come back while Reaction is running?
Reaction only simulates activity while the machine is idle. The moment you move the mouse or press a key it pauses instantly and hands control back to you. Resume with the same hotkey.
Does Reaction slow down my computer?
No. Reaction is a lightweight app that barely touches your system and runs quietly in the background. You will not notice a difference in speed.
How fast is support?
We are always on. Message us anytime — we usually reply within hours and help with install and tuning for your tracker. There is a real team on the other end, not an autoresponder.
Which operating systems are supported, and do I need to install it?
Reaction is a desktop app for Windows, macOS and Linux (Linux is still in beta), with a signed installer per platform. macOS ships a notarized build for Apple silicon and Intel; you grant Accessibility permission on first launch. A portable build is on the roadmap.
How much is it, and what happens after the free trial?
There is a 14-day free trial with a card. After that it is $7/month or $50/year — the single Reaction All plan with every feature included. Cancel anytime.
Automate your presence
Keep your presence active — start today
- Try 14 days free
- Cancel anytime
14-day free trial · no charge until day 14 · cancel anytime.