ThinApp is a safe place to purchase from. We use all the latest standards in web security and encryption. In addition, we do not store your credit card numbers, but allow our partners, like Paypal & Stripe to because they have incredibly powerful servers and security protocols.
In addition, we still use SSL as an extra measure even though we aren't collecting or saving your credit card information. Look for the little green lock icon and the https before the thinapp.co URL in your browser's address bar.
We currently use Paypal & Stripe to process payments, however you do not need a Paypal account to add funds to your account or make purchases on ThinApp via Paypal - you can use any major credit card (or your Paypal Account Balance). Simply click on the Pay with a debit or credit card option when you checkout on Paypal.