When your data disappears between devices. This pattern appears across 30 different app categories in our analysis of 156,000+ negative App Store reviews.
Syncing problems between devices
"Tasks haven’t synced from phone to desktop in weeks."
Sync issues between mobile and desktop
"Will not sync with eon core and will not import dives."
Lyrics syncing issues
"Impossible to Sync Lyrics Properly. The app constantly delays the audio while you’re trying to time the lines."
Inaccurate step count and synchronization issues
"Steps don't match. Watch complications don’t update."
App functionality and sync issues
"Limited functionality and doesn’t sync well with the cloud."
Syncing issues across devices
"You have to buy it multiple times if you want it on iOS and Windows."
Email sync issues and slow updates
"Emails haven’t been working for weeks, they don’t sync across devices."
iCloud sync failures
"Sync between two devices simply doesn't work. I have 15 more recipes on my phone than on my iPad."
Sync failures across devices
"Cannot stay synced and cannot cancel so out $24.95. Would be very nice if it worked across devices but syncing with iCloud mostly fails."
Audio/video sync issues
"I like this app but it does a very bad job streaming Windows Media Video files. The sound lags behind the video by several seconds. You see people moving their lips and the sound comes later on."
No cloud backup or sync functionality
"I REFUSE to use this app until there is some store of backup/storage system."
Sync failures across devices
"I can't get sync to work. I've been trying for months and can't find a way to email support."
Syncing issues with Apple devices
"Watch and phone app don’t sync anymore."
Books don't sync or show up in app despite being in online library
"App is not showing any added books and update library is not showing the books as well. This used to work fine earlier. When I login to website I see the books are in my shelf. But app is not refreshing"
Import failures and iCloud sync errors
"The import was aborted due to an error while downloading the items from iCloud. No items were imported to the target folder. Please check your internet connection and try selecting fewer items to be moved in one batch.' • Wifi is running 355 mbps"
Poor cross-device sync
"the data sync is excessively painful. I use my phone and iPad"
No cross-platform sync or multi-device support
"The iPad app just plain does not work at all. Also, if you have two devices like me (iPhone and iPad) the app does not share data between them"
Audio/video sync issues
"After every commercial, the audio gets more out of sync with the video"
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