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What users complain about Workout and fitness apps

App crashes and freezes during use.

Across 18,085 reviews of the 81 biggest workout and fitness apps: Users prioritize stable app performance and responsive support over feature completeness or variety.

18,085 reviews · 81 apps · 206 complaints · as of August 31, 2026

20%
App crashes and freezes during use
42 complaints
17%
Poor customer support and unresponsive team
34 complaints
17%
Missing features or insufficient functionality
34 complaints
I encounter at least 12 separate bugs in your apps core functionality every time I use it (4 times a week). I have the latest iOS on both watch and a brand new iPhone 17 pro max. I am not going to enumerate these bugs…
Fitbod: Gym & Fitness Planner

The apps behind these complaints.

What the store shows beside what their reviews count to.

EōS Fitness4.4· 4K ratings67% negative · 193/287
FITIV Pulse - Workout Tracker4.6· 13K ratings30% negative · 87/292
Apple Fitness2.9· 11K ratings65% negative · 354/544
Fitbod: Gym & Fitness Planner4.8· 284K ratings37% negative · 225/610
Centr: Strength & Fitness App4.8· 21K ratings18% negative · 73/398
SHRED: Gym & Home Workouts4.8· 40K ratings25% negative · 89/354

Star ratings are Apple’s lifetime averages across every rating ever left. Negative shares are counted from the reviews in our corpus. Windows vary per app.

Every complaint, ranked.

Shares of 206 counted complaints. Tap a row for the reviews behind it. Each row carries a representative review. Tap one for the rest.

I encounter at least 12 separate bugs in your apps core functionality every time I use it (4 times a week). I have the latest iOS on both watch and a brand new iPhone 17 pro max. I am not going to enumerate these bugs because you either already know them/ have been ignoring them for literally years or you really don’t deserve to know them because your company deserves to end permanently. Your comp…Fitbod: Gym & Fitness Planner
This app got me started and that’s awesome but I’ve discovered so many problems. Ask AI about this app before putting money down. This app will not push data for some workouts or it will do it hours later with wrong data like it never ended the workout. Maybe because I hit end workout then when I go back in later to download my pic the end button is there like I never it hit. What’s my PR for benc…SHRED: Gym & Home Workouts
I’ve been using Ladder for two years already and it’s the best exercise app I used. I won’t repeat the praise (having access to different workout styles/coaches, very smooth app experience. Great UI, social features, recently added meal tracking etc. etc all really great) can’t help but think, how much better it could be if it could do the following 1) allow us to give written feedback, rather tha…LADDER Strength Training Plans
I have been using this app for about 2 years and for the most part it works well. However, it routinely loses the data I enter into it mid workout. It is extremely frustrating to enter my exercises and sets entered and have it shut down without saving the data. I have gotten to the point where I will take pictures of the exercise data I entered so I have the info when the app crashes or shuts d…EōS Fitness
I loved the Centr app and the workouts that were suggested are great. My only regret is the app does not work great. Once in a while I face login issues. When I try logging in, I enter my username and password but nothing happens. I cannot change my password through the app and when it directs me to the website it does not load properly. I face this issue once in a week atleast and I have not rece…Centr: Strength & Fitness App
There are times when you can look at an app and say, “It’s pretty obvious that no user experience designers or user experience researchers worked on this product.” This is one of those times. The only reason I continue to use this app is because my trainer uses it. This app is clunky, full of weird and unintuitive interactions. The app on the phone and the app on the watch barely communicate with …Fitness App (ABC Trainerize)
A few things that frustrated me… and then what I liked. I didn’t realize that the app needed to connect to my watch to “count” the workout. App failed to synch, so that workout was lost. I figured out how’s to put it in, but I know at least some of the data is lost. Now that I know that, the app still has a hard time connecting to my Apple Watch, even after re-installing it. The A.I. coach repea…Planfit AI Gym Workout Planner
Deep Report

This is the what. The Deep Report is the why.

Sample below is from the live budgeting apps Deep Report. Yours is generated to order for workout and fitness apps.

The #1 counted gap

Sync & data runs 5.8% of this market’s negatives vs 2.2% typical, present in 9 of 14 apps.

+ 10 more gaps, ranked, inside.

Rival by rival

Rocket Money - Bills & Budgets68% negative367,314 ratings

Owns: Largest reach; bill-negotiation hook

Exposed: Billing fraud perception ('billing every three weeks'); inaccurate sync; no Zelle/CashApp

Intuit Credit Karma

Owns:

Exposed:

NerdWallet: Smart Money App

Owns:

Exposed:

YNAB

Owns:

Exposed:

Monarch: Budget & Track Money

Owns:

Exposed:

7 rivals read this way inside: owned ground and exposed flank, each.

Root causes behind each complaint, which competitor has already solved it, and whether the gap in workout and fitness apps is still open, the part a model can’t reconstruct.

Frequently asked

What do users complain about most in workout and fitness apps?

The most common complaint is "App crashes and freezes during use", 20% of analyzed complaints across 81 apps.

How many reviews did App Imp analyze for workout and fitness apps?

18,085 real App Store reviews across 81 apps. Frequency-ranked and counted, never estimated.

What are the top complaints in workout and fitness apps?

1. App crashes and freezes during use (20%); 2. Poor customer support and unresponsive team (17%); 3. Missing features or insufficient functionality (17%); 4. Workout data not saving or being lost (15%); 5. Login failures and authentication errors (13%).

Other counted categories

Every figure above is counted from real, public App Store reviews, never estimated, never LLM-invented. 18,085 reviews across 81 workout and fitness apps.