After much effort, the Symbolic Logic APPlication (SLAPP) is now released! I very much hope that you will find it useful.

I did not receive much feedback on the evaluation versions (1.x). However there have been many improvements. No doubt there remain ways for it to be better. All the same, this first version should be sufficient for substantive work.

In addition to the new app, there is a new (light) revision of the Symbolic Logic textbook, in both electronic and hardcopy versions. One effect is to fully match exercises from the textbook and app.

*If you installed an evaluation version (1.x) on PC, please see the housekeeping note at 2.1 in the changelog.