🪥
Once a day
Brushing can't reach between your teeth. The American Dental Association recommends cleaning between them once a day.
American Dental AssociationFlossing habit app · Free on iPhone · Android beta
Finally, a flossing habit
that sticks.
One tap a day. Build your streak, earn milestones, and keep each other honest — with a partner, a roommate, or a friend.
- Once a day
- One tap
- Accountability that's actually fun
Free to start · No ads · Privacy-first
Features
Everything you need to build the habit
Simple, effective tools designed to make flossing stick. No gimmicks.
Build Streaks
Track your daily flossing and watch your streak grow. Stay motivated with milestones and celebrations.
Floss with Friends
Add friends, see their streaks, and send gentle nudges. Accountability made fun.
Floss Academy
Short, plain-language oral-care basics, with sources. A new tip every day.
Earn Badges
Unlock achievements as you build your habit. From First Floss to Year Legend.
And that's just the beginning...
The habit
What the first months look like
Not a medical timeline. Just what building the habit tends to feel like, with the one health claim we can actually back.
Tonight
Your first log
One tap. Streak day 1. The reminder you picked fires tomorrow night so day 2 takes care of itself.
Day 7
Week Warrior
Your first milestone badge, and the moment most people invite a partner, roommate, or friend as their floss buddy.
Month 1
What the evidence supports
A Cochrane review found low-certainty evidence that flossing plus brushing may reduce gum inflammation compared with brushing alone.
Day 66
It stops being effort
The median time for a new daily habit to feel automatic in the best-known study (Lally et al., 2010). Around here, flossing stops being a decision.
Next check-up
Show your dentist
Export your flossing history from the app and bring it to your next visit. A log, not a guess.
General information, not dental advice. If your gums bleed regularly, see a dentist.
How It Works
Start building your streak in 3 simple steps
1
Download & Sign Up
Free to download, takes 30 seconds to create your account.
2
Log Your Floss
One tap each day. That's it. We'll remind you if you forget.
3
Watch Your Streak Grow
Build momentum. Earn badges. Make your dentist proud.
The app, as it is
Watch your streak come alive
Every day you floss, your streak grows. Miss a day? Your friends will nudge you back on track.
- One-tap daily logging
- Streak protection reminders
- Friends can see your progress
Screens from the current App Store listing.
Questions
Before you download
What is FlossBros?
A free habit app for flossing. You log one tap a day, watch a streak grow, and add friends who can see it and nudge you. Floss Academy adds short, sourced lessons on gum health.
More about FlossBrosIs FlossBros free?
Yes. Downloading, streaks, reminders, badges, Floss Academy and up to 5 friends are free, with no ads. Optional Premium and Family plans add extras such as streak freezes, a longer catch-up window, unlimited friends, a PDF log for your dentist and Premium for your whole household.
Which phones does it run on?
iPhone, on the App Store today. Android is in a closed beta on Google Play; you can request access on our Android page and we add testers in daily batches.
How does FlossBros compare with other flossing apps?
It depends on what you need. FlossBros is built around friends who see your streak and can nudge you, plus sourced lessons and a PDF log for your dentist on Premium. It needs an account. If you want no account at all, logging after every meal, or one app for all your habits, another app may suit you better, and our comparison says which.
Compare flossing appsHow does the streak work?
Log a floss once a day and the streak grows by one. Flossed but forgot to log? You can add it for up to 7 days back. Otherwise a missed day resets the streak, unless a Premium streak freeze covers you. Friends see your streak and can send a nudge or a high-five.
Does flossing really matter for the rest of my body?
Brushing alone doesn't reach between your teeth, and the American Dental Association recommends cleaning between them once a day. A Cochrane review found low-certainty evidence that flossing plus brushing may reduce gum inflammation compared with brushing alone. Observational studies link gum disease with other conditions, but they don't show that flossing prevents them, so we don't claim it does.
How long does it take to build the habit?
In the best-known study, new daily behaviours took a median of 66 days to feel automatic, with a range from 18 to 254 days. Missing one day didn't materially affect how the habit formed. That is what the streak, the reminder and the friends are for.
Is it like Duolingo, but for flossing?
Same idea: a streak you do not want to break, small daily wins, and friends who notice. Applied to the ninety seconds a day your dentist keeps asking about.
Where does my data go?
Your floss logs live in your account and only you can read them. Friends you accept see your display name, streak and level. No ads and no ad tracking, and you can delete your account from the app or from this website at any time.
Ready to become a floss boss?
Your first streak starts tonight. One tap, then another tomorrow. Your smile will thank you.
Free to start
No ads
Privacy first