LoseStreak — competitive fitness between friends
Nobody had been watching.
Then she called you out.
You said yes.
By Friday, you weren't the same person.
Then Sunday came.
She owed you dinner.
One friend. One week.
Pick someone. Pick a battle. Only one of you wins, and the other one has to admit it.
Free-for-all. Or teams.
Throw the whole group chat into a lobby. The last one standing gets to talk about it.
She sees what you ate.
Point your camera at dinner. She sees it. You see hers. There's no version of this where the 2am burrito stays a secret.
Reps you can’t fake.
Runs, lifts, rides — they show up on their own. Push-ups, squats, pull-ups — counted by the camera, not your honor.
Then make her send it.
21 badges, some stack, all public. The loser is the one who has to post the share card to the group chat.
How It Works
From challenge to verdict — here's the full loop.
Steps to Victory
Challenge Types
Bet Types
What Competitors Are Saying
From casual friends to hardcore gym rivals.
“The AI called out my Wednesday pizza in the verdict. In front of everyone. I've never been more motivated to meal prep in my life.”
Jake M.
Lost 8 lbs in 3 weeks
“My roommate and I have been going back and forth for 6 weeks straight. I've never been this consistent with anything fitness-related. The bets help.”
Sarah K.
6-competition win streak
“I downloaded every fitness app on the App Store. None of them worked because nobody was watching. LoseStreak fixed that problem on day one.”
Marcus T.
Down 15 lbs since January
“The verdict cards are genuinely funny. My friend group passes them around like memes. The loser never hears the end of it.”
Emma L.
Spectator & competitor
“I bet my coworker dinner that I'd out-step him for a week. I hit 14,000 steps a day. I've never walked that much in my life.”
David R.
Steps challenge winner
“The fact that my opponent can see my meals in real time changed everything. You can't cheat when someone's watching.”
Priya S.
Perfect logging streak — 30 days
“The AI called out my Wednesday pizza in the verdict. In front of everyone. I've never been more motivated to meal prep in my life.”
Jake M.
Lost 8 lbs in 3 weeks
“My roommate and I have been going back and forth for 6 weeks straight. I've never been this consistent with anything fitness-related. The bets help.”
Sarah K.
6-competition win streak
“I downloaded every fitness app on the App Store. None of them worked because nobody was watching. LoseStreak fixed that problem on day one.”
Marcus T.
Down 15 lbs since January
“The verdict cards are genuinely funny. My friend group passes them around like memes. The loser never hears the end of it.”
Emma L.
Spectator & competitor
“I bet my coworker dinner that I'd out-step him for a week. I hit 14,000 steps a day. I've never walked that much in my life.”
David R.
Steps challenge winner
“The fact that my opponent can see my meals in real time changed everything. You can't cheat when someone's watching.”
Priya S.
Perfect logging streak — 30 days
“The AI called out my Wednesday pizza in the verdict. In front of everyone. I've never been more motivated to meal prep in my life.”
Jake M.
Lost 8 lbs in 3 weeks
“My roommate and I have been going back and forth for 6 weeks straight. I've never been this consistent with anything fitness-related. The bets help.”
Sarah K.
6-competition win streak
“I downloaded every fitness app on the App Store. None of them worked because nobody was watching. LoseStreak fixed that problem on day one.”
Marcus T.
Down 15 lbs since January
“The verdict cards are genuinely funny. My friend group passes them around like memes. The loser never hears the end of it.”
Emma L.
Spectator & competitor
“I bet my coworker dinner that I'd out-step him for a week. I hit 14,000 steps a day. I've never walked that much in my life.”
David R.
Steps challenge winner
“The fact that my opponent can see my meals in real time changed everything. You can't cheat when someone's watching.”
Priya S.
Perfect logging streak — 30 days
“The AI called out my Wednesday pizza in the verdict. In front of everyone. I've never been more motivated to meal prep in my life.”
Jake M.
Lost 8 lbs in 3 weeks
“My roommate and I have been going back and forth for 6 weeks straight. I've never been this consistent with anything fitness-related. The bets help.”
Sarah K.
6-competition win streak
“I downloaded every fitness app on the App Store. None of them worked because nobody was watching. LoseStreak fixed that problem on day one.”
Marcus T.
Down 15 lbs since January
“The verdict cards are genuinely funny. My friend group passes them around like memes. The loser never hears the end of it.”
Emma L.
Spectator & competitor
“I bet my coworker dinner that I'd out-step him for a week. I hit 14,000 steps a day. I've never walked that much in my life.”
David R.
Steps challenge winner
“The fact that my opponent can see my meals in real time changed everything. You can't cheat when someone's watching.”
Priya S.
Perfect logging streak — 30 days
“My girlfriend and I compete every week now. She's won 4 out of 5. The AI's roasts of me are brutal but accurate.”
Tom W.
Couple competition addict
“I've tried MyFitnessPal, Noom, and Lose It. They all lasted about 2 weeks. LoseStreak is the only one I've stuck with because my friends won't let me quit.”
Rachel C.
Former app-hopper
“The live battle feed is addicting. I check it more than Instagram. Watching my friends' competitions play out in real time is peak entertainment.”
Alex P.
Top spectator voter
“Set a $50 bet with my gym partner on a HIIT challenge. Neither of us has ever trained harder. Money on the line hits different.”
Chris N.
HIIT challenge champion
“The Glow Up Check card comparing my Day 1 and Day 7 photos was actually shocking. I could see the difference. That's when it clicked.”
Mia H.
Weight loss competitor
“I'm a personal trainer and I've started using this with my clients. The competitive element does what motivation alone never could.”
Jordan F.
Personal Trainer, 12 active competitions
“My girlfriend and I compete every week now. She's won 4 out of 5. The AI's roasts of me are brutal but accurate.”
Tom W.
Couple competition addict
“I've tried MyFitnessPal, Noom, and Lose It. They all lasted about 2 weeks. LoseStreak is the only one I've stuck with because my friends won't let me quit.”
Rachel C.
Former app-hopper
“The live battle feed is addicting. I check it more than Instagram. Watching my friends' competitions play out in real time is peak entertainment.”
Alex P.
Top spectator voter
“Set a $50 bet with my gym partner on a HIIT challenge. Neither of us has ever trained harder. Money on the line hits different.”
Chris N.
HIIT challenge champion
“The Glow Up Check card comparing my Day 1 and Day 7 photos was actually shocking. I could see the difference. That's when it clicked.”
Mia H.
Weight loss competitor
“I'm a personal trainer and I've started using this with my clients. The competitive element does what motivation alone never could.”
Jordan F.
Personal Trainer, 12 active competitions
“My girlfriend and I compete every week now. She's won 4 out of 5. The AI's roasts of me are brutal but accurate.”
Tom W.
Couple competition addict
“I've tried MyFitnessPal, Noom, and Lose It. They all lasted about 2 weeks. LoseStreak is the only one I've stuck with because my friends won't let me quit.”
Rachel C.
Former app-hopper
“The live battle feed is addicting. I check it more than Instagram. Watching my friends' competitions play out in real time is peak entertainment.”
Alex P.
Top spectator voter
“Set a $50 bet with my gym partner on a HIIT challenge. Neither of us has ever trained harder. Money on the line hits different.”
Chris N.
HIIT challenge champion
“The Glow Up Check card comparing my Day 1 and Day 7 photos was actually shocking. I could see the difference. That's when it clicked.”
Mia H.
Weight loss competitor
“I'm a personal trainer and I've started using this with my clients. The competitive element does what motivation alone never could.”
Jordan F.
Personal Trainer, 12 active competitions
“My girlfriend and I compete every week now. She's won 4 out of 5. The AI's roasts of me are brutal but accurate.”
Tom W.
Couple competition addict
“I've tried MyFitnessPal, Noom, and Lose It. They all lasted about 2 weeks. LoseStreak is the only one I've stuck with because my friends won't let me quit.”
Rachel C.
Former app-hopper
“The live battle feed is addicting. I check it more than Instagram. Watching my friends' competitions play out in real time is peak entertainment.”
Alex P.
Top spectator voter
“Set a $50 bet with my gym partner on a HIIT challenge. Neither of us has ever trained harder. Money on the line hits different.”
Chris N.
HIIT challenge champion
“The Glow Up Check card comparing my Day 1 and Day 7 photos was actually shocking. I could see the difference. That's when it clicked.”
Mia H.
Weight loss competitor
“I'm a personal trainer and I've started using this with my clients. The competitive element does what motivation alone never could.”
Jordan F.
Personal Trainer, 12 active competitions
Your Data, Protected
We handle health data. Here's how we keep it safe.
HealthKit Compliant
HealthKit data is never stored in iCloud. All health data is encrypted and handled per Apple's strict guidelines.
Encrypted Everything
All data encrypted in transit and at rest. Your weight, meals, and workouts are protected end-to-end.
Friends Only
Only friends you accept can see your data. Competition data is visible only to participants and approved spectators.
Username Discovery Only
No phone number or email contact matching. You find friends by username — nothing else is exposed.
No Health Advice
We're a competition app, not a medical app. We never give dietary advice, health warnings, or wellness recommendations.
Your Data, Your Control
Health data is read-only from Apple Health. We never write to HealthKit. Delete your account and everything goes with it.
Frequently Asked Questions
Common questions about how it works.
GAME ON
Ready to Compete?
Download LoseStreak, challenge a friend, and find out who's actually putting in the work.
0
Challenge Types
0v1
Head-to-Head Battles
0
Bet Types
0
Badges to Collect