What are the actual storage limits in iOS safari for a PWA (in either localstorage or indexeddb)?
Is there anyway to request more storage?
Is iOS guaranteed to keep the data? (i.e. not automatically delete it)
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Have you got any updates on this, i am facing an issue that ios safari is clearing my users website data, for whole 1 year i am trying to find an answer https://stackoverflow.com/questions/66155850/invalidstateerror-failed-to-execute-transaction-on-idbdatabase-the-databas – Q8root May 08 '21 at 23:43
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No response. From personal experience we have found that storing the data in indexeddb (IDB) on a pinned PWA seems to be more persistent. Apparently it also depends on available space on the device as well however I haven't found a concrete list of rules that iOS safari uses to clear the data. We found IDB on iOS to be unstable and it would silently (without error) crash around 3 times a day and could only be fixed by a refresh (This is for a single-page-app that stays open and is used constantly for the entire day). Fix was saving state and triggering a page refresh when idle every hour – Tony J Watson May 10 '21 at 04:15