Not OP, but have a look at [0]. It’s not great, but good enough. I regularly use it for App Store screenshots with captions and text. [0] https://theapplaunchpad.com/. - Source: Hacker News / about 1 year ago

For an advanced approach that includes localizations of your text and a ton of included resources to build your designs off of, there is AppLaunchPad (which has both a screenshot version and a mockup version with free and pay-by-the-month options), there is Vernissage which has a free and a pretty cheap pro version, and then there's App-Mockup which is free web-app. Source: almost 2 years ago

I used this. Paid for one month and got a good use out of it. https://theapplaunchpad.com. Source: over 2 years ago

I used AppLaunchPad. It’s a paid service but you can go monthly for single months when you need it (US$ 29). And you can easily wrap device frames for different size and colors of iPhone and iPad around the standard screenshots that you supply. Source: almost 3 years ago

Why not create reusable website templates with your favorite tech stack and sell them on platforms like Gumroad or Envato? I will start by selling website templates on Gumroad, I've read and seen it can be a highly profitable venture. - Source: dev.to / about 1 month ago

Check out themeforest.net for more themes. You can look at the blog-specific category, and add some search keywords (like "minimalistic") to narrow it down more. Source: 7 months ago

Create and sell WordPress themes or plugins on platforms like ThemeForest, Elegant Themes, and CodeCanyon. Cater to the vast WordPress user base. - Source: dev.to / 8 months ago

By "themes" I mean pre-built website front-ends like you can get from places like themeforest.net. Source: 10 months ago

Border radius and a box shadow does wonders. But seriously, look on Dribbble and Theme Forest for inspo. Just like coding, design takes practice. Source: about 1 year ago