Thanks @Rifad ! I’m honored to be one of the people tagged here.
I’m a rather odd AppSheet creator in that, instead of making lots of different apps, I have been continually tweaking one app for many years now. It’s an educational app (a flashcard app for language learners) and so I’ve wanted to make the UI attractive and intuitive for students.
I searched for posts I’ve made in the past that I think are still relevant to your topic (updating may be appropriate in some cases) and are important to the current version of my app. Here’s what I found:
Category 1: Making stuff look right in detail views
Adding vertical space between items in detail view
https://www.googlecloudcommunity.com/gc/Tips-Tricks/Adding-vertical-space-between-items-in-detail-view/m-p/281811
Rich Text Formatting - in Preview Program
https://www.googlecloudcommunity.com/gc/Announcements/Rich-Text-Formatting-in-Preview-Program/m-p/352427
(Not a tip from me but rich text formatting has been very valuable to me in getting things to look right in my detail views.)
Category 2: Making stuff look right in table views
Working with table view (Q&A)
https://www.googlecloudcommunity.com/gc/Tips-Tricks/Working-with-table-view-Q-A/m-p/245914
How to add a checkbox to a table view
https://www.googlecloudcommunity.com/gc/Tips-Tricks/How-to-add-a-checkbox-to-a-table-view/m-p/318307
Adjusting table spacing
https://www.googlecloudcommunity.com/gc/Tips-Tricks/Adjusting-table-spacing/m-p/
Category 3: Dealing with the “no data” problem in deck views
Make many views do the work of one
https://www.googlecloudcommunity.com/gc/Tips-Tricks/Make-many-views-do-the-work-of-one/m-p/293197
Category 4: Using still images and animated gifs more effectively
Using SVG “interface” images
https://www.googlecloudcommunity.com/gc/Tips-Tricks/Using-SVG-quot-interface-quot-images/m-p/504387
Animated gifs
https://www.googlecloudcommunity.com/gc/Tips-Tricks/Animated-gifs/m-p/255103
Important update from Koichi_Tsuji:
GIF file - now animation is preserved
https://www.googlecloudcommunity.com/gc/Tips-Tricks/GIF-file-now-animation-is-preserved/m-p/327057
Using QuickChart in your apps
https://www.googlecloudcommunity.com/gc/Tips-Tricks/Using-QuickChart-in-your-apps/m-p/255189
Category 5: Let the user know that data will change after sync
Display a “Waiting for sync . . .” message
https://www.googlecloudcommunity.com/gc/Tips-Tricks/Display-a-quot-Waiting-for-sync-quot-message/m-p/369613
P.S. I’m happy to report that the implementation of one UI-related feature request I made in the past is “planned”:
Capability to change size, color, etc of display name with format rule
https://www.googlecloudcommunity.com/gc/Feature-Ideas/Capability-to-change-size-color-etc-of-display-name-with-format/idi-p/382112
Anyone new to AppSheet who might be reading this should know that “format rules” can be very useful in improving the UI of your apps. Here’s a tip I wrote about how to implement format rules more effectively:
Put format rule conditions in virtual columns
https://www.googlecloudcommunity.com/gc/Tips-Tricks/Put-format-rule-conditions-in-virtual-columns/m-p/364411