Hi! I see a great potential if Smath could be integrated in other apps that work with handwriting recognition.
I personally use Nebo (https://www.nebo.app) and while it is great at recognizing the math formulas and converting them in text, it is still not able to address the computational part. The only available integration is with My Script which unfortunately works only for additions, multiplications.
I do not recall any other math app with handwriting recognition.

Next to Nebo you immediately find MyScript Calculator, which goes far beyond just + and -.