Based on our record, Mydraft.cc seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
You might consider hiring someone to build it for you. Recently got a simple app built using Upwork, hired two guys, got two versions of the app, went with the one we liked best. We mocked up some wireframes (https://mydraft.cc/ is a good tool for that), set the basic parameters we needed it to fill, and it was way easier than I thought it'd be. Source: almost 3 years ago
Invision - Prototyping and collaboration for design teams
Wireflow - Create beautiful flowcharts
Marvel - Turn sketches, mockups and designs into web, iPhone, iOS, Android and Apple Watch app prototypes.
Axure RP - The prototyping and specification software used by 87% of the Fortune 100. Beyond mockups, design interactive prototypes for business solutions, websites, and applications.
Pencil - Pencil is an animation/drawing software for Mac OS X, Windows, and Linux.
Pencil Project - Single-user mockup / wireframing / diagramming tool