Simple-Gallery

Rewrote video playback, use a separate screen + added fast-forwarding with horizontal swiping
Added optional 1:1 pixel ratio zooming with two double taps at fullscreen view
Allow adding Copy at the fullscreen bottom actions
Always include images at slideshows, never videos
Fixed scanning of some predefined folders for images
Some other stability/performance/translation improvements

Fixed a glitch at zooming fullscreen images with double tap
Hide favorite items from hidden folders, if showing hidden items is disabled

Done a few performance improvements here and there
Allow changing view type individually per folder
Merry Christmas!

Fixing some crashes

Added an initial widget implementation for creating homescreen folder shortcuts
Added optional grouping of direct subfolders, as a check at the "Change view type" dialog
Added an option to set custom crop aspect ratio at the editor
Save exif data at edited files on Android 7+
Handle only Mass Storage USB devices, ignore the rest
Many other smaller UX/stability/performance improvements

Limit automatic spam folder exclusion to the "/Android/data" folder

Added multiple predefined aspect ratios at the Editor + remember the last used ratio
Fix some issue with deleted items not appearing in the Recycle Bin, causing the app to take up too much space
At delete/copy/move operations on folders apply them only on the visible files, take filters/hiding into account
Do not exclude whole Data folder by default, be smarter about filtering out spam folders
Added support for Sony RAW ".arw" files
Optimize video duration fetching at thumbnails

Adding a crashfix related to showing video duration

Added optional displaying video duration on thumbnails
Fixed keeping last_modified value at copy/move in some cases
Exclude the Data folder by default
Many translation, UX and stability improvements

Initial Pro version

Adding an option to store last video playback position (by mathevs)
Adding a "Keep both" conflict resolution at copy/move (by Doubl3MM)
Improved panoramic video detection
Remove some glitches related to third party file opening
Do not exclude the Data folder by default
Removed the "Avoid showing Whats New at app startup" option
This version of the app is no longer maintained. Please upgrade to the Pro version. It is free till Nov 12 2018. You can find the Upgrade button at the top of the app Settings.

Added a new option for password protecting file deletion/move
Improved panorama video detection
Improved the opening of media files without file extension
Disabled move operation on Recycle bin items, use Restore
Fixed handling of some third party image picker intents
Fixed slideshow looping and a couple other UX glitches
Improved the stability of retrieving cached files
Hi

Fixing the inability to delete SD card files

Added support for panorama videos
Added an initial implementation of renaming multiple items at once
Added some performance improvements at item de/selection
Allow enabling hidden item visibility at the copy/move destination picker
Allow closing fullscreen view with swipe down gestures (can be disabled in settings)
Fixed a glitch with Favorite items getting unselected every day
Fixed exposure time displayed at long exposure photos
Fixed fullscreen images being sometimes totally zoomed in after device rotation
Fixed slideshow direction
Made loading initial fullscreen view quicker and fullscreen toggling more reliable
Not sure what else, nobody reads this anyway

Adding some crashfixes

Increased the minimal required Android OS version to 5 (Lollipop)
Rewrote file selection for more robustness
Added a new option for showing the Recycle Bin as the last folder
Added Search for searching folders by names
Replaced the G+ button with Reddit
Couple smaller glitch fixes and improvements

Added notch support for Android 9
Allow faster video seeking by dragging a finger at the bottom seekbar
Use a different way of displaying fullscreen GIFs
Added a new toggle for trying to show the best possible image quality
Keep Favorite items marked after moving
Fixed some glitches related to toggling fullscreen mode
Many other smaller improvements

Fixed lag at zooming fullscreen images on some devices

Improved zooming performance at fullscreen view
Fixed showing conflict resolution dialog at Move
Fixed selection check icons at horizontal scrolling
Fixed displaying some fullscreen images, where file path contained percentage sign or hashtag
Optimized many database operations
Fixed many other smaller issues

Fixed opening some email client attachments and MMS images
Attempt to fix lagging at zooming in on some devices
Couple other smaller bugfixes and improvements