Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
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.
Brevo - Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.
Bubble.io - Building tech is slow and expensive. Bubble is the most powerful no-code platform for creating digital products.
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.