A stretch reminder app that actually gets you stretching

Why you forget to stretch (and why it isn’t your fault)

Everyone who sits at a desk knows they should stretch. Almost nobody remembers to. Deep work swallows hours at a time, and by the moment your neck complains, the stiffness has already set in. Willpower isn’t the fix — a trigger is. That’s the whole job of a stretch reminder app: to interrupt the sitting before your body has to.

What a good stretch reminder app should do

• Fit your schedule, not a timer. Reminders should fire during your work hours and stay silent outside them. Stiff asks for your work days, start and end times, and preferred rhythm, then handles the rest.
• Tell you what to do, not just when. A bare “Stretch!” notification gets dismissed. Every Stiff reminder opens a guided, illustrated routine — neck tilts, shoulder rolls, seated twists, wrist and eye exercises — each about 30 seconds with a timer.
• Survive real workdays. Meetings happen. Stiff lets you snooze a reminder for 10 minutes instead of abandoning the break entirely.
• Make consistency rewarding. Stiff tracks daily goals, XP, levels, and streaks, and rolls it all into an “Unstiff Score” so you can watch the habit compound.

How Stiff works as your stretch reminder

1. Set your schedule. Choose work days, work hours, and how often you want to move — every 30, 45, or 60 minutes.
2. Get a nudge with personality. Stiff the sloth sends reminders like “Your spine is sending signals. Take a minute to move.” They’re hard to ignore because they’re fun to read.
3. Stretch for 30 seconds. Follow the illustrated exercise on screen — most are done seated, right at your desk. See the full list of moves in our desk stretches overview.
4. Keep the streak. Every completed stretch earns XP toward your daily goal. Miss a day and the sloth notices; keep it up and your streak, level, and Unstiff Score climb.

Stretch reminders work better with a reason to care

The difference between a reminder you obey and one you swipe away is usually accountability. Stiff adds two kinds: a mascot who reacts to your behaviour, and optional team leaderboards where coworkers compare weekly XP. If you’ve ever closed a ring or protected a Duolingo streak, you know how well this works. Curious about the habit science? Read how to remember to stretch at work.

How often should the reminders fire?

Ergonomics guidance for desk workers converges on short movement breaks every 30–60 minutes rather than one long session. Start with hourly reminders and a one-minute break; tighten the interval if you still feel stiff by mid-afternoon. We break down the evidence in how often you should stretch at work.