Reference:
As far as I know, this single-page listing with APK links exists nowhere.
So I made it just now in order to help others download all the APKs easily.

Based on the information Theo kindly reported a few days ago, the venerable Simple Mobile Tools suite ownership is changing (adding ads, apparently). <https://www.androidauthority.com/simple-mobile-tools-acquisition-3391041/> <https://liliputing.com/android-app-maker-simple-mobile-tools-acquired-by-zipoapps/>
<https://github.com/SimpleMobileTools/General-Discussion/issues/241#issuecomment-1837102917>
etc.

While there will be forks, my suggestion for now - immediately so - is for
you to make a directory on your PC for the last known good version of Simple Mobile Tools apps and download the latest F-Droid APKs into it.
<https://github.com/SimpleMobileTools>
<https://www.simplemobiletools.com/>

To help you out, here are some of the links for the latest APKs.
<https://github.com/orgs/SimpleMobileTools/repositories?type=all>

Since even that list is missing some (e.g., extended contacts), I created
my own listing for others to reference in a single page of links.

I may have missed a few tools so let me know if any links are missing.
(The order below is the order presented in the github link above.)

Simple-App-Launcher com.simplemobiletools.applauncher_53.apk
A simple holder for favourite apps for quick & easy app launcher icon management
https://f-droid.org/en/packages/com.simplemobiletools.applauncher/
Version 5.11.4 (53) Added on 2023-09-12
https://f-droid.org/repo/com.simplemobiletools.applauncher_53.apk
SHA256 hash of com.simplemobiletools.applauncher_53.apk:
6a470ed5e39fb20add8a9c6d03f5a792a89e3c28b2bf05dc85a88ea4e5053c46

Simple-Launcher com.simplemobiletools.launcher_10.apk
A practical and customizable launcher for launching your favorite apps easily.
https://f-droid.org/en/packages/com.simplemobiletools.launcher/
Version 5.1.1 (10) Added on 2023-09-30
https://f-droid.org/repo/com.simplemobiletools.launcher_10.apk
SHA256 hash of com.simplemobiletools.launcher_10.apk:
0c25285a24a4449b63bd190d66522709461334160870c7e7951bf9438d9d898c

Simple-Calendar com.simplemobiletools.calendar.pro_240.apk
A simple calendar with events, tasks, customizable colors, widgets and no ads.
https://f-droid.org/packages/com.simplemobiletools.calendar.pro/
Version 6.23.1 (240) Added on 2023-10-08
https://f-droid.org/repo/com.simplemobiletools.calendar.pro_240.apk
SHA256 hash of com.simplemobiletools.calendar.pro_240.apk:
4827a707d8d0e5b4594d322c55221f7c5587555857dc79bc9b7596dc9a717604

Simple-Dialer com.simplemobiletools.dialer_57.apk
A handy phone call manager with phonebook, number blocking and multi-SIM support
https://f-droid.org/packages/com.simplemobiletools.dialer/
Version 5.18.1 (57) Added on 2023-09-30
https://f-droid.org/repo/com.simplemobiletools.dialer_57.apk
SHA256 hash of com.simplemobiletools.dialer_57.apk:
31a47e479b90e2ca18a761e3d871c0d525cc4a1dc391707f2c83aaab3e0ffbde

Simple-Gallery com.simplemobiletools.gallery.pro_396.apk
A premium app for managing and editing your photos, videos, GIFs without ads
https://f-droid.org/packages/com.simplemobiletools.gallery.pro/
Version 6.28.1 (396) Added on 2023-10-12
https://f-droid.org/repo/com.simplemobiletools.gallery.pro_396.apk
SHA256 hash of com.simplemobiletools.gallery.pro_396.apk:
175f10c9ce4c6d5294ed20d61216d850df2c2b1928a846489a4cb372153d1607

Simple-Calculator com.simplemobiletools.calculator_61.apk
A calculator for quick simple calculations with a nice user interface and no ads
https://f-droid.org/packages/com.simplemobiletools.calculator/
Version 5.12.0 (61) Added on 2023-10-27
https://f-droid.org/repo/com.simplemobiletools.calculator_61.apk
SHA256 hash of com.simplemobiletools.calculator_61.apk:
13788d61eb7e6651e2eb87b655eea9019c723da2e0c8af6e6e17945b75a51800

Simple-Music-Player com.simplemobiletools.musicplayer_119.apk
A clean music player with a customizable widget, stylish interface and no ads.
https://f-droid.org/en/packages/com.simplemobiletools.musicplayer/
Version 5.18.3 (119) Added on 2023-10-20
https://f-droid.org/repo/com.simplemobiletools.musicplayer_119.apk
SHA256 hash of com.simplemobiletools.musicplayer_119.apk:
85fa19468ed7b92e4e806646735e86cba537f49ea3efdf19aec58718341717e9

Simple-Flashlight com.simplemobiletools.flashlight_66.apk
A simple modern flashlight with SOS, stroboscope & bright display, has no ads.
https://f-droid.org/packages/com.simplemobiletools.flashlight
Version 5.10.1 (66) Added on 2023-10-27
https://f-droid.org/repo/com.simplemobiletools.flashlight_66.apk
SHA256 hash of com.simplemobiletools.flashlight_66.apk:
b4cd07c40a3d5711461670a2f460a1447acf3836c0e90471b7ba5c8b4c2f9bb3

Simple-SMS-Messenger com.simplemobiletools.smsmessenger_85.apk
An easy and quick way of managing SMS and MMS messages without ads.
https://f-droid.org/packages/com.simplemobiletools.smsmessenger/
Version 5.19.3 (85) Added on 2023-10-10
https://f-droid.org/repo/com.simplemobiletools.smsmessenger_85.apk
SHA256 hash of com.simplemobiletools.smsmessenger_85.apk:
e134a0e330514de3716dbacfa08d39707ebbb2c9ebde8d08854e159b2cd7c2f4

Simple-Voice-Recorder com.simplemobiletools.voicerecorder_41.apk
An easy way of recording any discussion or sounds without ads or internet access
https://f-droid.org/en/packages/com.simplemobiletools.voicerecorder/
Version 5.12.3 (41) Added on 2023-10-27
https://f-droid.org/repo/com.simplemobiletools.voicerecorder_41.apk
SHA256 hash of com.simplemobiletools.voicerecorder_41.apk:
fdee1b38bb17eee38f37113be5ca269527ba5b4b65d1f4dbb7f0185e56bc96af

Simple-Camera com.simplemobiletools.camera_89.apk
Quick photo and video camera with a flash, customizable aspect ratio.
https://f-droid.org/packages/com.simplemobiletools.camera/
Version 6.16.1 (136) Added on 2023-09-30
https://f-droid.org/repo/com.simplemobiletools.camera_89.apk
SHA256 hash of com.simplemobiletools.camera_89.apk:
4693a4d524e70136ee6da3a92aaa3c7d2f9f46cd98d5693614b318804f4bc826

Simple-File-Manager com.simplemobiletools.filemanager.pro_136.apk
Easy app for managing your files without ads, respecting your privacy & security
https://f-droid.org/packages/com.simplemobiletools.filemanager.pro/
Version 5.7.2 (89) Added on 2023-09-25
https://f-droid.org/repo/com.simplemobiletools.filemanager.pro_136.apk
SHA256 hash of com.simplemobiletools.filemanager.pro_136.apk:
d071a2c3f263a2db106953d7d7b659401899f97fbf3ee404ebddac4ed6da75e3

Simple-Notes com.simplemobiletools.notes.pro_114.apk
A simple textfield for adding quick notes without ads.
https://f-droid.org/packages/com.simplemobiletools.notes.pro/
Version 6.17.0 (114) Added on 2023-09-25
https://f-droid.org/repo/com.simplemobiletools.notes.pro_114.apk
SHA256 hash of com.simplemobiletools.notes.pro_114.apk:
4d4b805f370c68a3bbd4dfebc808f65ecb9e07f01f3720abf7b39833f647cbaf

Simple-Keyboard com.simplemobiletools.keyboard_24.apk
Easy keyboard for inserting all kinds of texts, special characters and numbers.
https://f-droid.org/packages/com.simplemobiletools.keyboard/
Version 5.4.9 (24) Added on 2023-10-16
https://f-droid.org/repo/com.simplemobiletools.keyboard_24.apk
SHA256 hash of com.simplemobiletools.keyboard_24.apk:
4f97d3180725663cd8b875e6b878c06c13670595d8aea3dd08d86bfc2fc4ac1e

Simple-Contacts com.simplemobiletools.contacts.pro_107.apk
Easy and quick contact management with no ads, handles groups and favorites too.
https://f-droid.org/packages/com.simplemobiletools.contacts.pro/
Version 6.22.7 (107) Added on 2023-09-25
https://f-droid.org/repo/com.simplemobiletools.contacts.pro_107.apk
SHA256 hash of com.simplemobiletools.contacts.pro_107.apk:
e91b55a73bcb10b0c47e0a50d6b81816c151d2a0766b5202347d5c3b01c42738

Simple Contacts Pro SE de.ritscher.simplemobiletools.contacts.pro_108.apk
Extended version of Simple Contacts Pro that supports separate address fields
https://f-droid.org/packages/de.ritscher.simplemobiletools.contacts.pro/
Version 6.22.4.2 (108) Added on 2023-08-17
https://f-droid.org/repo/de.ritscher.simplemobiletools.contacts.pro_108.apk
SHA256 hash of de.ritscher.simplemobiletools.contacts.pro_108.apk:
a9528eb4601422c9ad298d0710d19b1ed8c320121b5a0e02db71193d77aa59f7

Simple-Clock com.simplemobiletools.clock_42.apk
Combination of a beautiful clock with widget, alarm, stopwatch & timer, no ads
https://f-droid.org/en/packages/com.simplemobiletools.clock/
Version 5.11.2 (42) Added on 2023-09-30
https://f-droid.org/repo/com.simplemobiletools.clock_42.apk
SHA256 hash of com.simplemobiletools.clock_42.apk:
fae515b24165cc9569b443792014ddf8065faab0c7ebdaddae821b62b7093591

Simple-Draw com.simplemobiletools.draw.pro_82.apk
A canvas you can draw on with different colors.
https://f-droid.org/en/packages/com.simplemobiletools.draw.pro/
Version 6.9.6 (82) Added on 2023-09-25
https://f-droid.org/repo/com.simplemobiletools.draw.pro_82.apk
SHA256 hash of com.simplemobiletools.draw.pro_82.apk:
d4d414bd9dc793fa24329019cf40782a2aa43bc4837585c223675c6fc654fa85
--
As always, if you know more than I do, please add value to this thread.

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