MathWallet5 has supported IoTeX. Follow guide below and start using IoTeX:
First, install the MathWallet5 version from https://mathwallet.org
On the chain list click + button at bottom, and open IoTeX
Then, on the chain list find the IoTeX network and add a new wallet (you can import existing wallets from other chain as well)
Then you will able to receive and send tokens on IoTeX
You can search and add assets to your wallet as well
For more dapps on IoTeX, click: