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App Imp

Fitness tracking apps.

UX runs in 9 of the 10 apps here — nobody on this shelf has fixed it.

10 apps · 4,891 reviews held · 2,074 negative · 2026-08-24 snapshot

73/100 opportunity

6 of 6 factors · not advice
Nobody's fixed it9 of 10 apps90
How far above typical11.6% vs 2.9% typical100
How angrystar2.5 · 241 reviews37
People in the market3,369,976 ratings84
Room to enterleader holds 70% of ratings30
Willingness to pay8 of 10 charge · $6.49 entry80

Mostly solved: ads. 9 of 9 apps run below the store’s typical rate on it — while 9 of 10 still carry ux complaints.

How this is scored

Weighted mean of the sub-scores, weights re-normalized over whatever is computable (nobody's fixed it 25 · how far above typical 20 · how angry 15 · people in the market 15 · room to enter 15 · willingness to pay 10). Fixed anchors map each count to 0–100: breadth and willingness-to-pay are straight shares; the gap’s heat tops out at 4times the store’s typical rate; anger scores star3 as 0 and star1.5 as 100; reach runs 104 to 107ratings on a log scale; room to enter is one minus the leader’s share of shelf ratings. A factor that cannot be counted is dropped and named — never imputed. The site’s one composite (#115, owner decision 2026-08-15); cited industry benchmarks are never blended in.

5 gaps.

01

UX — unfixed in 9 of 10 apps

extreme · 11.6% of this shelf’s 2,074 negative reviews, against 2.9% typical store-wide, at 2.45star average anger.

What they said · 241 reviews
“Terrible update — I’ve used this app for years, and the new layout/design is a disaster. Please bring back the old interface.”MyFitnessPal: Calorie Counter · 1star · Aug 14, 2026
“It’s frustrating — I purchased the year-long subscription and have used Jefit for about 3 months. It provides a very loose exercise framework that keeps me going to the gym, but the AI coach is strange — it repeats the same exercises that target specific areas but completely ignores others. For me, it’s arms: It barely adds any arm work and I have to add them in myself. Big oversight by jefit. The”JEFIT Workout Plan Gym Tracker · 3star · Aug 14, 2026
“Hate the latest update — The is app has been extremely helpful in tracking my meals & my macros. Unfortunately, the latest update to the interface makes me not even want to open the app. It’s less user friendly & quick to log meals now.”MyFitnessPal: Calorie Counter · 3star · Aug 14, 2026
How it compares
this shelf
11.6%
241 of 2,074
store-wide
2.9%
typical
breadth
90%
9 of 10 apps
02

Sync & data — unfixed in 10 of 10 apps

extreme · 7.6% of this shelf’s 2,074 negative reviews, against 2.2% typical store-wide, at 2.58star average anger.

What they said · 157 reviews
  • Sync fails between devices33 of 157
“Apple Watch Bugged Forever — The app is pretty good overall for tracking fitness progress. I only use the free version because it has not proved itself to be consistent nor reliable when it comes to my Apple Watch syncing with my phone. Every time I use my watch to progress the current exercise or change the weight or reps, it jumps to the next exercise. That, in turn, forces me to take my phone o”Hevy - Workout Tracker Gym Log · 3star · Aug 21, 2026
“Continuous errors syncing workouts — “Something went wrong. Please try again.” The app keeps showing an error when I open it and won’t show or sync my most recent workout. Has happened multiple times this month and lasts for multiple days. When it works it’s good, but so frustrating to worry you’re going to lose your workout every time you use the app.”Strava: Run, Bike, Walk · 2star · Aug 14, 2026
“No help from support — I have not received any help for a syncing issue within the app and it’s been about five days. This app sucks. It’s so annoying. I need this fixed.”MyFitnessPal: Calorie Counter · 1star · Aug 10, 2026
How it compares
this shelf
7.6%
157 of 2,074
store-wide
2.2%
typical
breadth
100%
10 of 10 apps
03

Limits & caps — unfixed in 9 of 10 apps

elevated · 4.1% of this shelf’s 2,074 negative reviews, against 2.8% typical store-wide, at 2.68star average anger.

What they said · 84 reviews
  • Core feature locked behind the paywall12 of 84
“Limited rep set to 150reps. — No longer recommend this app. Used to be good until they decided to limit your workouts to make more money. Dumping this app as of today.”Hevy - Workout Tracker Gym Log · 1star · Aug 15, 2026
“Wasted my time — Spent an hour putting in workout routines for 4 days and when I went to create the 5th routine for day 5 I get the paywall message that a 5th day is only available with pro. Waste of time.”Hevy - Workout Tracker Gym Log · 1star · Aug 14, 2026
“Newest update limits activity input — Great app, except after the latest update, you cannot enter (or jot) private notes. After you tap that within the Private Notes field, the screen automatically scrolls so far up that you cannot paste data into it like you’d always been able to do prior to the update. Please fix, thank you.”Strava: Run, Bike, Walk · 3star · Aug 10, 2026
How it compares
this shelf
4.1%
84 of 2,074
store-wide
2.8%
typical
breadth
90%
9 of 10 apps
04

Performance — unfixed in 10 of 10 apps

16.5% of this shelf’s 2,074 negative reviews, against 16.9% typical store-wide, at 2.32star average anger.

What they said · 343 reviews
“Apple Watch Bugged Forever — The app is pretty good overall for tracking fitness progress. I only use the free version because it has not proved itself to be consistent nor reliable when it comes to my Apple Watch syncing with my phone. Every time I use my watch to progress the current exercise or change the weight or reps, it jumps to the next exercise. That, in turn, forces me to take my phone o”Hevy - Workout Tracker Gym Log · 3star · Aug 21, 2026
“Error message — Something went wrong message received today. Unable to use the app today.”Strava: Run, Bike, Walk · 1star · Aug 15, 2026
“Slowly going downhill — I’ve used this app since 2013 when there was no paid subscription, after under armor purchased it they made it so some features like the barcode scanner cost extra to use and now they have annoying pop up ads added as well, there’s a lot of other apps out there that don’t charge for features as well so I recommend anyone looking to download a app to use then search fir a be”MyFitnessPal: Calorie Counter · 1star · Aug 15, 2026
How it compares
this shelf
16.5%
343 of 2,074
store-wide
16.9%
typical
breadth
100%
10 of 10 apps
05

Accuracy — unfixed in 9 of 10 apps

11.3% of this shelf’s 2,074 negative reviews, against 11.5% typical store-wide, at 1.87star average anger.

What they said · 234 reviews
“Error message — Something went wrong message received today. Unable to use the app today.”Strava: Run, Bike, Walk · 1star · Aug 15, 2026
“App is not fully functional — I am re-implementing MyFitnessPal. My screen does not correlate with instructions to add/edit steps, barcodes, activities. Help needed! Chat is inaccurate and not helpful.”MyFitnessPal: Calorie Counter · 3star · Aug 14, 2026
“Disappointed — I literally have 210 mg of sodium in my breakfast, and according to the nutrition information for the day, it’s 900 and something milligrams, and I haven’t had anything else today, I also looked up about MyFitnessPal being accurate, and there are reviews with the Better Business Bureau stating how inaccurate MyFitnessPal has become. It’s really sad.”MyFitnessPal: Calorie Counter · 1star · Aug 14, 2026
How it compares
this shelf
11.3%
234 of 2,074
store-wide
11.5%
typical
breadth
90%
9 of 10 apps

Is there a market for a new fitness tracking app?

10 apps compete on this shelf, holding 4,891 App Store reviews — and the widest unfixed complaint, ux, runs in 9 of 10 of them at 11.6% of negative reviews against 2.9% typical. Those are counts, not a verdict — the page shows what is unfixed, not whether to build.

What do users complain about most in fitness tracking apps?

1. UX — in 9 of 10 apps, 11.6% of negative reviews; 2. Sync & data — in 10 of 10 apps, 7.6% of negative reviews; 3. Limits & caps — in 9 of 10 apps, 4.1% of negative reviews; 4. Performance — in 10 of 10 apps, 16.5% of negative reviews; 5. Accuracy — in 9 of 10 apps, 11.3% of negative reviews.

How many fitness tracking app reviews did App Imp count?

4,891 US App Store reviews across 10 apps, 2,074 of them negative — counted on the 2026-08-24 snapshot, never estimated.

Searched on the App Store.

Apple’s own suggestions for fitness tracking apps terms, in their order.

ai health coachcalorie counter freefitness trackingcalorie counter & food trackerfree fitness trackingrun, bike, walk, hike trackercalorie counterfree fitness tracking and workout apps

Searched, but no app on this shelf says it in its name.

Who’s in it

All 10 apps counted on this shelf · 2026-08-24.

App
MyFitnessPal: Calorie Counter2,352,67921%4%3%11%
Strava: Run, Bike, Walk369,4802%4%8%21%
Habit Tracker145,7797%6%8%21%
Strong Workout Tracker Gym Log108,50312%32%4%31%
Running Walking Tracker Goals106,411—2%—4%
Hevy - Workout Tracker Gym Log88,0527%7%27%27%
Map My Fitness Workout Tracker77,4683%8%1%14%
Fitness App (ABC Trainerize)67,0547%9%1%32%
JEFIT Workout Plan Gym Tracker46,8438%7%2%15%
Activity Tracker・FitnessView7,7073%9%3%5%

Each cell: that app’s share of its own negative reviews. Bold from 1.15 times the store’s typical rate for that complaint, and only where an app holds 20+ negative reviews. Click a column to sort.

What they charge, and what it costs them

Prices from Apple’s public pages; the share counts payment-mechanics language only.

AppMoney complaints
Strava: Run, Bike, Walk$5.99–$149.99 · 9 tiers9.7% of 320
Activity Tracker・FitnessViewfree3.8% of 80
MyFitnessPal: Calorie Counter$9.99–$79.99 · 7 tiers2.3% of 824
JEFIT Workout Plan Gym Tracker$6.99–$69.99 · 7 tiers1.6% of 191
Habit Tracker$4.99–$12.99 · 6 tiers0% of 126
Strong Workout Tracker Gym Log$3.99–$99.99 · 7 tiers0% of 171
Running Walking Tracker Goals$7.99–$44.99 · 8 tiers0% of 47
Hevy - Workout Tracker Gym Log$2.99–$74.99 · 4 tiers0% of 15
Map My Fitness Workout Tracker$6.99–$39.99 · 6 tiers0% of 162

What each one owns, where each is exposed

MyFitnessPal: Calorie Counter

Owns. Largest food database; 2.35M ratings; habituated daily loggers

Exposed. 71% negative; 2026 UI redesign destroyed glanceability; quick-add moved to paywall; fraudulent-charge reports

Strava: Run, Bike, Walk

Owns. Social layer; GPS route tracking; 367k ratings

Exposed. 62% negative; year-in-review paywalled; cancellation deliberately obstructed; $85 unrefundable charges reported

JEFIT Workout Plan Gym Tracker

Owns. Large exercise library; 46k ratings

Exposed. 45% negative; pop-up ads every 5 seconds reported; plan-saving moved behind paywall

Strong Workout Tracker Gym Log

Owns. Clean gym log; 108k ratings; IAP up to $99.99

Exposed. 39% negative; Apple Watch sync broken post-update; reps not saving; users eyeing AI alternatives

Hevy - Workout Tracker Gym Log

Owns. 2% negative — lowest anger in set; 85k ratings; IAP up to $74.99

Exposed. Narrowly gym-log only; no nutrition; limited sync complaints still present

Muscle Booster Workout Tracker

Owns. Quiz-personalized plans; 136k ratings

Exposed. 45% negative; plan doesn't match quiz answers; unauthorized charge reports; refused refunds

Browse the apps behind these counts

Every app we count, with the complaint it runs furthest above the store’s typical rate.

Open the app library
How this is counted

Every number is arithmetic over the reviews we hold, re-counted weekly — nothing modelled, nothing scored. Themes come from a frozen pattern classifier rather than a model reading reviews, so the same review always lands in the same bucket. A shelf rate is pooled across every app here; the store rate is the same count across 12,122 apps. A complaint is only called a gap when at least half the shelf carries it and at least 20 reviews are behind it — a problem concentrated in one app is that app’s bug.