BreakTimer is a free, open-source desktop app that reminds you to take breaks and avoid eye strain and RSI. See its features, platforms, and how it compares…
Long, uninterrupted computer sessions are a well-documented contributor to eye strain and repetitive strain injury, yet most people are bad at self-regulating breaks without an external prompt - especially during focused, deadline-driven work. BreakTimer exists to close that gap with the simplest possible intervention: a configurable, locally-run reminder that interrupts a work session on a schedule the user defines, rather than relying on willpower or memory.
Unlike broader wellness or productivity suites that bundle break reminders alongside habit tracking, hydration logging, or posture monitoring, BreakTimer stays narrowly focused on the reminder itself. That narrow scope is part of why it remains lightweight and easy to reason about as an open-source project, and why a solo maintainer has been able to sustain it over multiple years of releases.
Users configure three core settings: break frequency (how often a break should be prompted), break duration (how long the break should last), and a working-hours window so the app only reminds during the hours someone is actually expected to be at their desk. On top of scheduling, users choose how forcefully BreakTimer should intervene - a dismissible notification alert for a gentler nudge, or a fullscreen break window that takes over the screen entirely, which is designed for users who know they'll ignore a soft reminder if given the option.
A quieter but meaningful feature is BreakTimer's break-reset detection: the app can tell when a user has stepped away from the keyboard and treat that idle time as an actual rest period, adjusting its internal countdown so people aren't prompted for a formal break moments after they've already taken an informal one. Combined with customizable break messages, this makes the tool feel less like a rigid timer and more like an assistant that's roughly aware of how someone is actually using their computer.
BreakTimer is maintained by developer Tom James Watson and released under the GPL-3.0 license, with its full source code publicly available on GitHub. There is no company, subscription, or account system involved: the app is downloaded and installed like any other desktop application, and all break-scheduling logic runs locally on the user's machine, with no cloud dependency required for the core functionality.
This open-source, local-first model has two practical implications. First, it's genuinely free with no premium tier, ads, or upsell - the entire feature set described here is available to every user. Second, because the code is open and auditable, privacy-conscious users can verify there's nothing tracking their activity behind the scenes. The tradeoff is that, as a volunteer-maintained project, BreakTimer's roadmap and support depend on community bandwidth rather than a dedicated support team, and it doesn't include team or enterprise features like centrally managed break policies across an organization.
Yes, BreakTimer is completely free and open source with no paid tiers, subscriptions, or accounts.
BreakTimer supports Windows, macOS, and Linux, with Linux installers available as Snap, AppImage, .deb, and .rpm packages.
BreakTimer is developed and maintained by Tom James Watson, along with community contributors, as an open-source project.
Yes, BreakTimer is released under the GPL-3.0 license with its source code publicly available on GitHub.
No, BreakTimer runs locally on each machine independently and does not sync settings or history across devices.
Yes, users can configure break frequency, break duration, and the working-hours window during which reminders are active.
No. BreakTimer runs entirely locally with no required cloud account, and its open-source code can be audited to verify this.
BreakTimer is one of the more actively maintained and widely starred break-reminder projects, with features like intelligent break-reset detection and fullscreen enforced breaks, though several similar open-source alternatives also exist.