What users complain about in fitness tracking apps
Stability issues overshadow all other problems, affecting app crashes twice as often as data loss or syncing concerns combined.
6,229 reviews · 42 apps analyzed · Analysis as of June 18, 2026
Feature requests or missing functionality
Mentioned in 25% of complaints across the 42 apps we analyzed in fitness tracking apps.
Every complaint, ranked by frequency
01Feature requests or missing functionality
25%Found in 45 reviews.
“I’ve been using this app for many years now. This may be a minor thing to some but the fact that I can’t re-arrange my sets in an exercise is a big miss. I am constantly at the gym, putting in numbers, copying sets, because I can’t just drag a set and move it to a different…”
02App crashes, freezes, or won't load
22%Found in 40 reviews.
“This app freezes occasionally , does not save your workout try as you might, distorts data that it imports from other apps, is filled with unnecessary sub menus that make it un-user friendly (why would you need to go to a submenu to finish the workout when everything else is…”
03Data loss or workouts not being saved
12%Found in 21 reviews.
“I’ve only had the app and watch for a few days, and I’ve apparently lost all data from those few days by disconnecting and reconnecting and changing permissions. 🤬 The Garmin Connect app and my new Instinct watch are both very awkward to navigate: -Too many menus and submenus…”
04Syncing problems with watches or health apps
11%Found in 20 reviews.
“I’ve only had the app and watch for a few days, and I’ve apparently lost all data from those few days by disconnecting and reconnecting and changing permissions. 🤬 The Garmin Connect app and my new Instinct watch are both very awkward to navigate: -Too many menus and submenus…”
05Excessive paywalls, pop-ups, or forced subscriptions
11%Found in 20 reviews.
“This is one of those apps that I genuinely regret spending money on and waiting for them to improve or add features from their roadmap, that still haven’t appeared years later. I just launched the Apple Watch app, now I have to sign in on the Apple Watch app as if it’s some…”
06Login issues or account access problems
10%Found in 17 reviews.
“This app is so problematic I am considering getting a different watch just to escape the ongoing problems. Randomly logs me off and re login takes multiple tries and substantial time. It often claims watch is not connected but BT shows connected and phone rings on watch, so I…”
07Poor customer support or communication
8%Found in 15 reviews.
“Record any activity using this app and you must reply after you hit save workout by answering whether the app worked for you or not. This is a minor hindrance when you’re new to the app, but after 3 years using the app, it now is really annoying. You would think it would be just…”
Frequently asked
What do users complain about most in fitness tracking apps?
The most common complaint is "Feature requests or missing functionality" — 25% of analyzed complaints across 42 apps.
How many reviews did AppImp analyze for fitness tracking apps?
6,229 real App Store reviews across 42 apps — frequency-ranked and counted, never estimated.
What are the top complaints in fitness tracking apps?
1. Feature requests or missing functionality (25%); 2. App crashes, freezes, or won't load (22%); 3. Data loss or workouts not being saved (12%); 4. Syncing problems with watches or health apps (11%); 5. Excessive paywalls, pop-ups, or forced subscriptions (11%).
This is the what. The Deep Report is the why.
Root causes behind each complaint, which competitor has already solved it, and whether the gap in fitness tracking appsis still open — the part a model can’t reconstruct.
Run the full reportEvery figure above is counted from real, public App Store reviews — never estimated, never LLM-invented. 6,229 reviews across 42 fitness tracking apps.