Are you dreaming of extra income? With the rise of ecommerce and digital entrepreneurship, there's never been a better time to turn your skills and experience into a profitable online venture. In this article, we'll explore 23 app startup ideas that can help you make money online, from side hustles and passive income websites to advanced business models.

Print-on-Demand Products

One of the most accessible ways to start making money online is through print-on-demand products. This innovative concept lets you customize white-label products with original designs without holding inventory or incurring upfront costs. When a customer purchases one of your items, a print-on-demand company prints and ships it directly to their doorstep.

Best for: Influencers, artists, and brands looking to test the waters of online entrepreneurship.

Effort level: Low – if you can produce designs, starting a print-on-demand store is straightforward.

How to start:

  • Launch an online store or set up profiles on marketplaces.
  • Connect a print-on-demand app to your storefront.
  • Select your products.
  • Customize your products by uploading original designs.
  • Set prices and delivery terms.
  • List your custom products with persuasive images and product descriptions.

Time to success: New print-on-demand sellers typically see their first sales within 30-60 days, thanks to the low-risk, low-investment nature of this business model.

Monetize a Blog

If you're passionate about writing or sharing knowledge, monetizing a blog can be an excellent way to earn money online. You can generate income through ad revenue, affiliate marketing, sponsored posts, or direct product sales.

Best for: Writers, cultural commentators, or anyone with expertise to share with a niche audience.

Effort level: Medium – maintaining a regular publishing schedule is key to growing a successful blog and requires sustained effort.

How to start:

  • Choose a blogging platform that supports monetization.
  • Select a niche you're passionate about and can consistently write on.
  • Regularly create and post engaging content to build a loyal audience.
  • Implement SEO strategies to increase organic traffic.

Time to success: You can set up a new blog in just a few hours, but building an audience and generating revenue takes time – focus on social media marketing and SEO optimization.

Sell Digital Products

Selling digital products is another lucrative way to earn money online with minimal ongoing effort. Digital products that typically sell well include ebooks, templates, music samples, and online courses – all deliverable via download or secure portal access.

Best for: Creators and experts who want to monetize their skills and knowledge.

Effort level: Low – digital product businesses are highly scalable, requiring little additional production costs once created.

How to start:

  • Create a store where customers can buy and access your digital content.
  • Develop your art, music, courses, templates, or other digital items (ensuring compliance with licensing laws).
  • Use social media and content marketing to drive traffic to your store.

Time to success: You can open an online store to sell digital products for as little as $5 per month – leverage your existing audience by sharing your store link on social media and adding links from your blog.

Reselling Products

Reselling products online is one of the quickest ways to start an online business. You can flip vintage treasures, distribute products for established brands, or curate items from multiple brands in your own ecommerce store.

Best for: People who want to jump into ecommerce without creating their own products.

Effort level: Medium – finding profitable products and pricing them correctly requires research and market analysis.

How to start:

  • Research popular products and trends on social media, online marketplaces, or industry reports.
  • Choose a niche you're interested in and can source products for (e.g., vintage clothing, electronics, or home decor).
  • Set up an ecommerce store or use existing platforms like eBay, Poshmark, or Depop.

Time to success: With the right product and pricing strategy, you can start making sales within weeks – focus on marketing your items through social media and email campaigns.