Also like MAME, if you have the ROM for your e.g. TI-84 or TI-89, you can run it with emulator apps for e.g. iOS and Android.
Other cool math calculation apps for phones and tablets without bash, git, python and conda/mamba: Geogebra, Desmos, QuantumQ, (FDroid Termux + conda, Waydroid,)
Other cool math calculation apps for phones and tablets without bash, git, python and conda/mamba: Geogebra, Desmos, QuantumQ, (FDroid Termux + conda, Waydroid,)