A bug fix release of GoodReader 4 on iOS today hints that there's a "huge GoodReader 5 upgrade ... to follow soon". This has been promised before, but it would be nice to see the update actually occur. GoodReader was (and Is) a great file manager, especially on iPads. I think version 4 came out 6 or 7 years ago so it's long overdue for a revisit. For people who don't like all the complexities and fussiness of syncing DEVONthink to Go, and prefer indexing their files in DEVONthink, GoodReader is the best alternative in my opinion.