If you have to sync different devices you could have many problems with Innodb engine.
But on the other hand, it has some advantages: is more modern than MyIsam, and support foreign keys.
A compromise can be have Innodb as engine, but all the tables in MyIsam.
You should in any way be careful with some files, as already explained, in particular ibdata1.
how get rid of Innodb
If you don’t need foreign kayes, you can get rid of Innodb in /etc/my.cnf, with these instructions (stop mariadb before, and restart after):
default-storage-engine=MyISAM