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Lacks Features

Is there a good app for join fitness challenges with friends?

Lacks Features: 50 apps already serve this, and 13 data points mined from real user reviews across 2 sources show where they fall short. Apps exist but miss features users keep asking for. Enter with the missing feature.

35
Opportunity /100
55
Demand /100
89
Competition /100
58
Execution gap /100
50
Apps serving it
13
User reports mined

Data refreshed July 20, 2026 · scores recompute weekly as new reviews are mined, so re-check before you build.

What users complain about

The most common complaints behind apps that try to join fitness challenges with friends, mined and clustered from real reviews:

Complaint areaTypeMentionsWhat a user said
no share-workout-with-friends featuremissing-feature1
just needs a feature to share workouts w/ friends so they can also follow the same workout
cannot share workoutsmissing-feature1
Bring back being able to share my workouts like the Fitbit app had
cloud sync of workout plansreliability1
the cloud sync is horribly broken on workout plans
challenges/plans geared to runners not walkersmissing-feature1
its challenge or plan features are ALL geared to RUNNERS... really just a Runners app in disguise
no social/friend challengesmissing-feature1
No social no friends challenges have been a thing of the past
shared training plans with friendsmissing-feature1
what about an option to do a plan with friends?
sharing workout by text failsbug1
the text opens with no image of the workout and the send button is absent
no synced plans for workout partnersmissing-feature1
If you want to do a plan with a partner, good luck...it will be completely different from when your gym buddy selects the same program
private profiles can join public challengesmissing-feature1
If you’re set to private, you should not be allowed to participate in public challenges
limited fitness app integrationsmissing-feature1
could do with more options around linking your fitness apps they're all Google heavy, Garmin and Fitbit
repeated prompts to connect a fitness trackerux1
constantly asking me to connect a fitness tracking device that I do jot have
auto-detected workouts pushed to Strava overlapping tracked exercisesbug1
the Google health app is “automatically detecting” exercise & adding useless “workouts” in my Strava account

Apps that already serve this

AppRatingRatingsPrice
Fitness Buddy+ Workout Trainer4.811,724$3.99
My Personal Challenge4.86,487Free
New EōS Fitness1.9249Free
EōS Fitness4.44,375Free
Fit Card - Share Your Workouts5.02$2.99
Peloton: Fitness & Workouts4.9813,537Free
Nike Run Club: Running Coach4.8415,824Free
StepUp Pedometer Step Counter4.8120,785Free

Should you build it?

Apps exist but miss features users keep asking for. Enter with the missing feature. Opportunity here scores 35 out of 100 — a function of demand, how crowded the field is, and how badly the existing apps perform. Use the live map to compare it against adjacent tasks.

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Who has tried building this

ProjectStatusStarsStack
beaverfy/fitness-challengesactive2HTML

Open-source projects that attempted this task — active ones show today's bar; abandoned ones are a signal to validate why earlier attempts died.

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