App Cloner 1.3.13 will have a new ‘Display size’ option allowing you to change the DPI density scaling of apps. This option works similar to Settings > Display > Display size in Android 7.0 but it works per app. Unlike the ‘Font scale’ option this also affects the layout.
Here a preview of Facebook Messenger at 150% scale and 50% scale. For the latter, this is the same Nexus 6 phone, not a tablet 🙂
The scale ranges from 25% to 300%. I’ve also updated the ‘Font scale’ option to use this percentage slider rather than a text input.