The ckbk app and website allow you to choose exactly the right font size to suit your eyesight and preferences. These options can be found in the Appearance section of Settings (which is also where you will find the option to select between 'Light mode' and 'Dark mode')
By default, the app will make use of your system specified preferred text size. But you can also use the slider to set your preferrred ckbk text size directly.
Other options
When using ckbk on the web at https://app.ckbk.com you can also use your web browser's Zoom function to increase the magnification of the web page
For Chrome and Firefox this can be done using the Command-plus and Command-minus key combinations. For Windows, the equivalent is Ctrl-plus and Ctrl-minus.
For Safari, the keys to use are Command-Option-plus and Command-Option-minus
Chrome also does a great job of zooming to increase font size on iOS and Android tablets. There's no keyboard short cut in that case, but just click the ... menu at the bottom of the screen, and then choose "Zoom text".
This allows you to adjust the font size as desired.
On the iOS Safari web browser, you can increase the font size using the button on the left of the address bar.
