The 20-20-20 rule is simple; keeping it is the hard part. Eye Rest is the one built for adherence, it makes each break a hand-painted scene you look forward to, so you don't turn it off. LookAway is the most configurable if you like to tune every knob. Stretchly is the best free and open-source pick. f.lux shifts color temperature but doesn't make you rest, so pair it with a real break app.
What actually makes a break app work
People rarely quit a break app because it lacks features. They quit because the break is annoying or easy to ignore, so they turn it off and go back to sore eyes. A break app you'll actually keep tends to have all of these:
- A break worth taking, so you look forward to it instead of dismissing it.
- A heads-up before the break, so it does not ambush you mid-sentence.
- Auto-pause during meetings and video, so it does not interrupt the worst moment.
- A skip or snooze, so you are never trapped.
- Configurable timing, so it fits your work.
Use that as your checklist below.
The apps
1. Eye Rest — the break you'll actually keep
Native menu-bar app that fades your screen into a full-screen hand-painted scene for each 20-20-20 break, with a heads-up beforehand and free skip/snooze. It's the only one that treats the break as something to look forward to, which is the whole reason people stick with it.
- Good: the break is a calm, beautiful scene you keep taking (adherence, the thing that actually matters); heads-up before every break; skip/snooze free; blink/posture nudges free; flat $14.99 one-time, up to 3 Macs (launch offer), no subscription.
- Less good: newer than LookAway, so fewer power-user settings; auto-pause and the extra scenes are Pro; macOS 14+ only.
- Price: free to start; $14.99 one-time for Pro, 14-day trial.
- Pick it if: you've quit break apps before because they were ugly, naggy, or easy to ignore.
2. LookAway — most configurable
Native Mac break app with years of polish: smart scheduling, well-developed auto-pause, plenty of controls.
- Good: the deepest settings, a proven track record, clean design.
- Less good: the break itself is functional dimming, not a moment you look forward to; per-device pricing tiers plus a subscription option.
- Price: per-device tiers, lifetime option.
- Pick it if: you want maximum configurability and will tune it.
3. Stretchly — best free and open-source
Free, open-source, cross-platform break reminder with soothing prompts. Eye Rest vs Stretchly →
- Good: free, respects deep work, gentle by design, runs on Mac/Windows/Linux.
- Less good: generic look; easy to ignore over time.
- Price: free.
- Pick it if: you want zero cost and open source, and don't need beauty or deep Mac integration.
4. Time Out — simple scheduled breaks
Long-standing Mac app with normal and micro breaks. Eye Rest vs Time Out →
- Good: simple, established, flexible break types.
- Less good: dated interface; easy to dismiss out of habit.
- Price: free with paid options.
- Pick it if: you want a plain, no-frills scheduler.
5. f.lux — not a break app
Shifts screen color temperature to warmer tones at night.
- Good: genuinely helps with evening blue light and sleep.
- Less good: it doesn't make you look away or rest focus, so it doesn't address 20-20-20 strain. People feel covered when they're not.
- Price: free.
- Pick it if: you want color shifting, alongside a real break app, not instead of one.
Which should you pick?
- A break you'll actually keep taking: Eye Rest.
- Most configuration options: LookAway.
- Free / open source: Stretchly.
- Just color temperature: f.lux (plus a break app).
Questions
What is the 20-20-20 rule?
Every 20 minutes, look at something 20 feet away for 20 seconds. It gives your focusing muscles a rest and is the standard advice for digital eye strain.
Do these apps actually help eye strain?
They help if you keep them on. The rule works; adherence is the hard part, which is why whether you'll keep taking the break matters more than feature count.
Is a paid break app worth it over a free one?
Only if you'll keep using it. Free apps like Stretchly are excellent if you stick with them; Eye Rest bets that a break you look forward to is one you won't turn off.