We analyzed 81 negative reviews from the top 5 Stable Diffusion apps on the App Store. Here's what users hate most.
Ranked by frequency — how often each complaint appears in negative reviews.
72% of negative reviews mention this issue.
"Crashes during image generation every time the app is used on my iPhone 13 mini"
"No matter what I type it just crashes after touching the generate button"
28% of negative reviews mention this issue.
"After downloading the AI model it should have worked, but it will only build up the blue squares progress bar, then it just freezes, regardless of prompt"
"I've tried multiple times to create a photo using a model from civitai.com and everytime I try to create a picture, my phone will vibrate two times and nothing will pop up in the canvas"
22% of negative reviews mention this issue.
"You might get thwarted by the 1.6GB download of the model. I've tried eight times on two networks. If anything interrupts it (including screen saver, getting a call, or switching to another app), the download fails"
"after downloading the app and waiting a bit to download the 2 GiB system, my device's photo storage suddenly tripled in size and I went from 68 gbs used out pf 128 to 127.5 out of 128"
15% of negative reviews mention this issue.
"It constantly produces extra limbs, fingers, body parts as well as twisted legs and multiple heads even when adding all of these to the negative prompt"
"Using this app on an M3 Macbook Pro will all default settings results in every single image regardless of any prompt changing to be green and blurry"
19% of negative reviews mention this issue.
"Neither prompt textbox even actually appears. Instead you have some worthless tag interface spazzing out with no box displayed"
"Your July 21 2025 update broke the UI. When the keyboard is closed the prompt box disappears, but there is no easy way to bring the keyboard or prompt box back up on an iPad"
12% of negative reviews mention this issue.
"No idea what to choose for model source during setup - and not a single helpful bit of information on the wiki, or website"
"I have no idea what they produce unless I down load them. Some sort of quick tutorial would be nice"
Design and usability issues driving negative reviews.
Model downloads fail when users switch apps, receive calls, or screen locks, forcing complete restart with no resume capability
"If anything interrupts it (including screen saver, getting a call, or switching to another app), the download fails. No recovery available; have to start over"
App crashes or fails with no explanation, leaving users unable to diagnose or fix issues
"after app auto downloads model completely, it shows an unexpected error with no details"
Users don't understand which models or settings will work on their devices before attempting generation
"when i generate it gives me a warning saying your device is not capable to run this do you wish to continue"
Recent updates removed convenient UI elements and broke previously working features
"There used to be a ?? in the bottom right corner now it's nowhere to be found which was incredibly convenient to generate everything. I should have not updated to the newest version at all OMG @admin BRING IT BACK"
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