Cryptocurrency trading is now more accessible through mobile applications. With these 4 simple steps, ONUS app will help you buy Optimism and more than 300 other assets starting from 5 USD. It’s quick, easy, and secure.
1. Download ONUS
ONUS is now available on App Store (iOS system) and Google Play (Android system). You can also download the application through
2. Open an ONUS account
If you are new, you will need to sign up for an account and do advanced KYC. Advanced KYC gives you access to all the features on ONUS, including buy/sell OP and other 300+ assets.
3. Deposit USDT
ONUS uses USDT as the base currency. You can send On-chain USDT from other platforms to ONUS app, then use USDT to buy digital assets.
Use USDT to buy OP
Search for Optimism in the Assets category. Input the OP amount you want to buy, the system will automatically calculate the USDT amount you have to pay. Click “Exchange” to preview and confirm your purchase. See detailed instructions