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Lacks Features

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

Lacks Features: 53 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.

33
Opportunity /100
53
Demand /100
89
Competition /100
57
Execution gap /100
53
Apps serving it
13
User reports mined

Data refreshed August 3, 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 Fitness2.2353Free
EōS Fitness4.44,375Free
Fit Card - Share Your Workouts5.02$2.99
Peloton: Fitness & Workouts4.9814,444Free
Sweatmates: Partner Fitness4.96,207Free
Nike Run Club: Running Coach4.8416,533Free

Should you build it?

Apps exist but miss features users keep asking for. Enter with the missing feature. Opportunity here scores 33 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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