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
Wireflow - Create beautiful flowcharts
POP (Prototyping on Paper) - POP helps you make interactive prototype with ease. If you can draw, you can design apps.
Invision - Prototyping and collaboration for design teams
Briefs - Briefs is the essential app design tool built for a professional design workflow.
Marvel - Turn sketches, mockups and designs into web, iPhone, iOS, Android and Apple Watch app prototypes.
ProtoTouch - Create, Preview, Share and Install in any iPhone iPod iPad or web browser your mobile prototypes...