Comparison

Challenges vs MeThreeSixty

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Challenges

Compete with friends, family, and coworkers to get fit. Track your progress through stand, move, and exercise rings, earn medals, and send motivational nudges. Stay connected and motivated with real-time updates and team challenges.

Highlights
  • Team challenges
  • Activity ring tracking (Stand, Move, Exercise)
  • Medal achievements
  • Motivational nudges and comments
  • Real-time team progress updates
  • Apple Watch integration
Features
Read full description

Get fit and compete with friends, family & coworkers with the Challenges app. ‘Cause everybody needs a little healthy competition. -- How It Works -- Getting started with Challenges is easy. Join a team challenge and aim to complete your Stand, Move, and Exercise rings. Whether you get there by shakin’ it to Queen Bey or taking the furthest spot in the parking lot, it’s up to you. Keep tabs on your progress via Apple Watch, the Challenges App, or the Health app. Watch in real time as your teammates get closer to closing their rings - they’re cheering you on to do the same! -- Achievements -- The more you move, the more you’re rewarded. Stack up your points to earn Bronze, Silver, and Gold Medals. Go for the gold! Check progress on your next medal Bask in the glow of medals you’ve racked up from all of your Challenges -- Nudges -- What gets you stepping better than your L.A. Lights sneakers from the 90s? Accountability. Spark a little friendly banter to fuel your fitness flame. Get and send nudges from your teammates (Tell Dan from the second floor to start taking the stairs if he’s reppin’ your team Mission-Fitpossible) Comment on the challenge wall to share tips or coordinate a workout Invite a friend to join your team, via email or text (Emojis 100% acceptable) -- On The Watch -- Pump yourself up wherever you go with just a glance at your wrist. Check in on team ranking See when you’re closing in on an achievement Compare your daily average so you can gauge your progress. Get notified when someone nudges you Get pinged when one of your teammates is rocking it. “Dan just closed all three rings!” Boom, send back applause hands. Somebody’s been snubbing the elevator. Get your watch charged, your team amped, and your sneakers ready, ‘cause you’ve got a challenge to win. Challenges integrates with the Health App on your iPhone to retrieve the data it uses to determine by how much you've just beaten all your friends. Because of our integration with the Health App, this also means we leverage the powerful HealthKit API to make your user experience and user interface the best possible. Enjoy!

About

MeThreeSixty

Transform your phone into a 3D body scanner to accurately track your progress. Get detailed body measurements and visualize your changes with a personal 3D avatar. All your data stays private on your device.

Highlights
  • 3D body scanner using smartphone
  • 14+ trackable body measurements
  • 3D body avatar with comparisons
  • Body composition tracking
  • FutureMe goal visualization
  • On-device privacy
Read full description

YOUR BODY JOURNEY. ALL IN ONE PLACE.   MeThreeSixty brings your body progress together in one app. Scan your body in 3D, track measurements and body composition, follow your weight and goals, and keep your GLP-1 dose history alongside the changes happening to your body.   With a redesigned Home, the tools and information that matter to your journey are easier to access, track, and understand.     POWERFUL 3D BODY SCANNING   Turn your phone's camera into a powerful 3D body scanner. Two quick poses, front and side, are all it takes.   MeThreeSixty creates your personal 3D body avatar, captures 16+ body measurements, and helps you see how your body is changing over time. No tape measure. No expensive equipment. No guesswork. Always free.     MORE THAN A WEIGHT TRACKER   The scale only tells part of the story. Follow body composition, lean body mass, body fat percentage, and circumference measurements across your waist, hips, chest, arms, and more.   Track progress visually and numerically to get a more complete picture of how your body is changing.     TRACK YOUR GLP-1 JOURNEY   Keep your medication history together with the body data that matters most. Record medications, doses, injection sites, and notes while continuing to follow your weight, measurements, body composition, goals, and 3D body scans.   Don't just track the dose. See the bigger picture of your progress.     SET GOALS. FOLLOW YOUR PROGRESS.   Set goals for the body metrics that matter to you and follow your progress toward them over time. Your redesigned Home brings your goals, latest updates, measurements, scans, and dose tracking together for easier access to your journey.     SEE YOUR TRANSFORMATION IN 3D   Watch your body evolve with every scan through your personal 3D avatar. Compare scans side-by-side to see how your shape changes over time.   With FutureMe, explore a data-powered preview of your aspirational body. And with FutureMe Moment, create an inspiring look at the person you're working toward.     BUILT FOR PRIVACY   MeThreeSixty never uploads your photos to the cloud. The app scans your silhouette, not your image, so your image stays private and on your device.     A SMARTER ALTERNATIVE TO DEXA SCANS   Get detailed body composition insights without clinic appointments, high costs, or radiation. Powerful body tracking in your pocket, anytime, anywhere.     GO PREMIUM   Unlock the full MeThreeSixty experience with Premium, including additional fitness tracking metrics, unlimited scan history, faster processing, and long-term weight tracking trends.     KEY FEATURES   • 3D body scanning using only your smartphone  
 • 16+ trackable body measurements  
 • Body composition including lean mass, body fat, BMI, and more  
 • GLP-1 dose and medication tracking  
 • Goal setting and progress tracking  
 • 3D body avatar with side-by-side scan comparisons  
 • FutureMe and FutureMe Moment  
 • Weight and measurement trends  
 • Apple Health sync  
 • On-device privacy: photos are never uploaded to the cloud     You're more than a number on a scale. See more of your progress and follow more of your journey with MeThreeSixty.     Terms of use: https://www.sizestream.com/mobile-app-terms-and-conditions

Screenshots

Challenges4 screens
MeThreeSixty4 screens

Verdict

The call

The clearest difference is in-app purchases: Challenges at none against MeThreeSixty's 7. Challenges also leads on review sentiment (51% vs 27%). MeThreeSixty's advantage is ratings volume (18K vs 5.7K) and iOS requirement (16.6 vs 18.6). On price, rating, update cadence and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. MeThreeSixty sells 6 in-app purchases, starting at $1.99 per month. Challenges asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for Challenges against 4.7 for MeThreeSixty. Both are backed by a comparable volume of ratings — 5.7K and 18K respectively. Written reviews are what separate them: 51% of Challenges's written reviews are positive against 27% of MeThreeSixty's.

UpkeepUpdate frequency

Challenges ships an update every 3 weeks, MeThreeSixty monthly. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

Scorecard5 real differences · 5 level
Challenges versus MeThreeSixty: the parameters behind the verdict, then further details
ParameterChallengesMeThreeSixty
PriceFreeFree
Rating4.6 (5.7K ratings)4.7 (18K ratings) — better
Positive reviews51.0% of reviews — better26.9% of reviews
Number of ratings5.7K18K — better
Update frequencyEvery 3 weeks — betterMonthly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS18.616.6 — better
Further details — not scored
Size48 MB316 MB
Age rating4+17+
DeveloperFitNowSize Stream LLC

Customer experience

Challenges

All ratings5,728 ratings
Positive92.3%
Neutral2.5%
Negative5.1%
Written reviews355 reviews
Positive51.0%
Neutral14.9%
Negative34.1%

MeThreeSixty

All ratings18,421 ratings
Positive93.9%
Neutral2.3%
Negative3.9%
Written reviews394 reviews
Positive26.9%
Neutral9.4%
Negative63.7%

User reviews

Challenges

From 5.7K App Store ratings

What we love

  • 🚀 Great app for group challenges
  • 👍 Motivating and fun
  • 🤝 Allows competing across platforms
  • 🎯 Individualized calorie goals

Room to improve

  • 🐛 Syncing issues with fitness apps
  • 🕰️ Slow to update data
  • 🤯 Inaccurate point tracking
  • 🤖 Poor customer support
  • 🔒 Privacy concerns

MeThreeSixty

From 18K App Store ratings

What we love

  • 🚀 Fast and easy scan
  • 👍 Helpful for tracking progress
  • 🤩 Motivating to see body changes
  • 💪 Accurate measurements

Room to improve

  • 🐛 Inconsistent/inaccurate measurements
  • 🤖 Annoying voice instructions
  • 💰 Paid app after being free
  • 🔍 Lost historical data after update

Bugs and requests

Challenges

Reported bugs

4 issues
  • App crashes frequently
  • Syncing issues with Apple Health
  • Inability to delete account
  • Challenges not working as intended

Requested features

6 requests
  • Allow rest days in challenges
  • Increase maximum daily points
  • Add option to set individual vs. group challenges
  • Improve messaging and notifications
  • Add Garmin integration
Show 1 more
  • Allow challenge creators to manage teams

MeThreeSixty

Reported bugs

3 issues
  • Scan processing issues
  • Compatibility problems with certain devices
  • Login/account verification problems

Requested features

3 requests
  • 360-degree body scan
  • Ability to manually correct measurements
  • Yearly subscription option

In-app purchases

None

Challenges

No in-app purchases

6 purchases

MeThreeSixty

Subscriptions6
  • Me360 Monthly$1.991 Month
  • Premium Monthly Subscription2 variants$4.991 Month
  • Me360 Monthly$4.991 Month
Show 3 more
  • Premium Annual Subscription$19.991 Year
  • Premium Annual Subscription$29.991 Year
  • Premium Annual Subscription$39.991 Year

Questions

Is Challenges free?
Challenges is free to download, with no in-app purchases.
Is MeThreeSixty free?
MeThreeSixty is free to download, with in-app purchases available.
Which has better reviews, Challenges or MeThreeSixty?
MeThreeSixty is rated higher. Challenges averages 4.6 out of 5 from 5.7K ratings, while MeThreeSixty averages 4.7 from 18K ratings.
Do Challenges or MeThreeSixty have ads?
Neither Challenges nor MeThreeSixty shows ads.
Which is updated more often, Challenges or MeThreeSixty?
Challenges ships an update every 3 weeks, and MeThreeSixty monthly. Most recently, Challenges was updated on October 24, 2026 and MeThreeSixty on October 29, 2026.

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