32 bit programs Apple phase out support after macOS 10.14 Mojave

32-bit app compatibility with macOS High Sierra 10.13.4 and later

About the transition to 64-bit technology and how it affects 32-bit apps.

Apple began transitioning to 64-bit hardware and software technology for Mac over a decade ago, and all modern Macs now include powerful 64-bit processors that can run advanced 64-bit apps. These apps can access dramatically more memory, enable faster system performance, and take advantage of technologies that define today's Mac experience.

Apple has been working with developers to transition their apps, and in 2018 Apple informed them that macOS Mojave would be the last version of macOS to run 32-bit apps. Starting with macOS Catalina, 32-bit apps are no longer compatible with macOS.

Assorted Specifications - Kindles

Kindle-ereaders-2017.jpg
KindleModelMgenKgenWeight ThicknessWidthHeightScreenYearNotes
Kindle Touch 3G1st1st7.8 oz0.4"4.7"6.8"6" 167ppi-
Paperwhite 3G1st5th7.7 oz0.4"4.6"6.7"6" 212ppi-
Paperwhite 3G3rd7th7.6 oz0.36"4.6"6.7"6" 300ppi-
Paperwhite 4G4th10th6.4 oz0.32"4.6"6.6"6" 300ppi-Bluetooth, Waterproof, Flush Screen
Paperwhite5th11th 7.23 oz0.32"4.9"6.9"6.8" 300ppi-8GB/16GB, Front light, Warm light, waterproof, USB-C
Voyage 3G1st7th6.6 oz0.3"4.5"6.4"6" 300ppi-
Kindle8th5.7 oz0.36"4.5"6.3"6" 167ppi-Bluetooth
Oasis 3G1st8th4.7 oz0.13-0.33"4.8"5.6"6" 300ppi-
Kindle-10th6.1 oz0.34"4.5"6.3"6" 167ppi-
Kindle1st11th5.6 oz0.32"4.3"6.2"6" 300ppi202216GB, Front light, Bluetooth, USB-C
Paperwhite Signature Edition1st-7.3 oz0.32"4.9"6.9"6.8" 300ppi-32GB, Auto-adjusting front light, Warm-light, waterproof, Wireless Charging, USB-C
Kindle Scribe1st-15.3 oz0.22"7.7"9.0"10.2" 300ppi-16GB, Front light, Bluetooth, USB-C, Stylus