Cash App - The easy way to send, spend, bank, and invest.
Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
Facebook Pay - Send money to your friends via Messenger
MIT App Inventor - App Inventor is a cloud-based tool, which means you can create apps for phones or tablets right in your web browser.
PayPal.Me - Request money using your own personalized URL.
Bubble.io - Building tech is slow and expensive. Bubble is the most powerful no-code platform for creating digital products.