The short answer
If that doesn't fit you
- It's the workouts you skip, with one partner: Sweatmates, photo proof, iPhone.
- You'd rather not tell your friends: Cohorty, free, strangers on the same challenge.
- You want a person, not a leaderboard: GoalsWon, $90 a month.
- You need a consequence: FineStreak.
Quick comparison
| App | Friends | Tracks weight | Human coach | Free tier | Price | Platforms |
|---|---|---|---|---|---|---|
 Daily PactOur pickFriend groups, habit check-ins | $0.99/mo after trial | iOS · Android | ||||
| SweatmatesPairs, photo check-ins | Free / Pro from $4.99 | iOS | ||||
| CohortyMatched cohorts | Free | Web · iOS | ||||
| Squad1 to 4 week challenges | Free with friends | iOS · Android | ||||
| GoalsWonPaid coach, 1-on-1 | $60 to $90/mo | Web · iOS · Android | ||||
| FineStreakAI agent, optional fines | $8 to $20/mo | Web · iOS |
Prices are US storefront, checked 10 September 2026.
How we chose
We build Daily Pact, so read our pick with that in mind. Every app here was judged on the same questions: who notices when you skip, how fast the check-in is, what happens after a missed day, and what it really costs. We say plainly where another app does something we don't. The full policy is on our About page.
1. Daily Pact
Our pickThe habits behind the number, with friends watching
Daily Pact doesn't track weight, calories or macros, and that's deliberate. Weight loss that lasts is a handful of small daily habits (8,000 steps, two litres of water, no sugar after dinner, cook at home, gym three times a week) and those are exactly what a one-tap check-in is for. Start a pact with one friend or a few on the same journey, and the part that helps most is simple: someone notices. Your friend gets a notification when you check in, sees when you haven't, and can nudge you before the evening is gone. Nobody has to share a number. On the weeks the scale won't move, your stats still show something real: your completion rate and your streak. PactPause covers a holiday or a sick week without ending the streak.
New accounts get 14 days free · No credit card
Pros
- Rated 5.0 on the App Store
- Tracks the habits, not the weight: nothing sensitive to share
- Weekly targets for gym and meal prep
- A friend who notices, and can nudge you, when you haven't checked in
- Completion rate and streaks to show progress the scale doesn't
- PactPause for holidays
- iPhone and Android
Cons
- No calorie or weight tracking, so pair it with your usual app
- No free tier after 14 days
- No coach
2. Sweatmates
Workout accountability for two, with photo proof
If the exercise half of weight loss is where you slip, Sweatmates pairs you with one partner, has you both set a weekly workout goal, and asks for a photo each time. Wagers on missed goals are optional. It's workouts only (no food habits) and iPhone only, with a Pro subscription from $4.99. 4.9 from more than 10,000 ratings.
Pros
- Photo proof
- Wagers and nudges
- Big, happy user base
Cons
- Workouts only
- Pairs only
- iPhone only
3. Cohorty
A cohort of strangers on the same 30-day habit
Cohorty matches you into a cohort of 5 to 15 people doing the same 7 to 30-day challenge and shows check-ins as marks, no chat required. For weight loss it's a way to do "no sugar for 30 days" with people you don't have to explain yourself to. Free at the time of checking.
Pros
- No friends needed
- Free
- Quiet, no comments expected
Cons
- Strangers
- No Android yet
- Ends with the challenge
4. Squad
A 21-day sprint with stakes
Squad runs one-to-four-week challenges with a daily check-in. Private squads with friends are free; public squads use credits, and each miss costs one. Suits a defined block, like 21 days without takeaways, better than an ongoing habit.
Pros
- Free with friends
- Stakes if you want them
- Both platforms
Cons
- Four weeks max
- No leaderboard
- Daily, not weekly
5. GoalsWon
A human coach reads your check-in every day
GoalsWon assigns a professional accountability coach who reads your daily check-in and replies personally, every day, with a monthly video call. It isn't a diet service (the coach holds you to whatever plan you bring), but for people who want a person rather than a leaderboard, it's the most hands-on option. $90 a month with a 7-day trial, or $720 a year with a 14-day trial.
Pros
- Daily human reply
- Supportive or firm, your choice
- All platforms
Cons
- $90/mo or $720/yr
- No group
- Not a nutrition service
6. FineStreak
An AI that calls you and, if you choose, fines you
FineStreak calls or texts at your chosen time, asks whether you did the thing, and at the stricter tiers wants a photo or a live check. Fines are off by default and run from ten cents to $50 a miss when on. From $8 a month, in the browser or on iPhone (Android is listed as coming). Solo by design.
Pros
- No friends needed
- Hard to fake at strict tiers
- Fines optional
Cons
- No free tier
- No Android yet
- Not social
Track the habits, not the scale
None of the apps above tracks your weight, and that's not an oversight. Weight moves slowly and noisily; a daily weigh-in is one of the most discouraging habits there is. The behaviours that produce weight loss are daily, binary and boring, which makes them perfect for a check-in with friends. Keep your calorie or weight app if you use one, and use an accountability app for the five habits underneath it.
- 8,000 steps
- Two litres of water
- No sugar, or no snacks after 8pm
- Cook at home (weekly target: 5 nights)
- Gym, run or class 3 times a week (weekly)
- Protein with every meal
- No alcohol on weekdays
- Meal prep on Sunday (weekly)
- In bed by 11
- Log food before eating
Pick two. Add a third in month two. Groups that start with six habits are the ones that stop in week three.
The hard moment is rarely the first week. It's a Thursday in week three, when the novelty has gone and nothing looks different in the mirror yet. That's when small and visible beats big and private: in Daily Pact you can set several reminders a day for the same habit (a walk at lunch, water at 3pm, a final check before bed), and the check-in takes one tap, so a tired evening still counts.
Friends, strangers or a coach?
Weight loss is personal in a way a reading habit isn't, and it decides who you want on the leaderboard.
- Friends (Daily Pact, Squad, Sweatmates) are the strongest accountability, because letting them down costs something. Choose habit check-ins over weight sharing so nobody has to post a number. One friend who sees "2 checked in today" and wonders why you're not one of them does more than a group chat full of good intentions.
- Strangers (Cohorty, FineStreak) remove the embarrassment. Good for a first 30 days, or if your friends aren't on the same journey.
- A coach (GoalsWon) is the expensive option, and the one that adapts when the plan isn't working.
A note on what this page is not
This is a comparison of accountability tools, not health advice. If you're losing weight for a medical reason, or thinking about a very low intake or a fast, talk to a doctor or a dietitian first and use these apps to stick to the plan they give you.
Frequently Asked Questions
What is the best accountability app for weight loss?
For doing it with friends, Daily Pact: start a pact with a friend around the daily habits (steps, water, no sugar, workouts) and check in with one tap. Your friend sees when you've done it and can nudge you when you haven't. Nobody shares a weight. For workouts with one partner, Sweatmates. For a paid human coach, GoalsWon.
Is there a free weight loss accountability app?
Cohorty is free with matched cohorts. Squad is free for private squads with friends. Sweatmates has a free tier for partner workouts. Daily Pact is free for 14 days, then $0.99 a month.
Can I do a weight loss challenge with friends without sharing my weight?
Yes, and it's the better way. Compete on habits (days you hit your steps, days without sugar, workouts this week) rather than on pounds. Daily Pact, Squad and Cohorty are all habit check-ins with no weight field.
Do these apps count calories?
No. They hold you to habits. Keep whatever food-logging app you already use; "log food before eating" is itself a good check-in habit.
Related guides
Start a habit pact with a friend, free for 14 days
Start your 14-day free trial. No credit card required.
5.0 from 13 App Store ratingsAvailable on iPhone & Android · 14 days free for new accounts