It's important to approach apps that claim to help you earn money without investment with caution, as many of them may be scams or not live up to their promises. While there are legitimate ways to earn money online, it's essential to be aware of potential risks and thoroughly research any platform before getting involved. Here are some popular and generally reputable options:

Freelance Platforms: Websites like Upwork, Fiverr, and Freelancer allow you to offer your skills and services to a global audience.

Online Surveys and Task Platforms: Swagbucks, InboxDollars, and Survey Junkie are examples of platforms that pay you for participating in surveys, watching videos, and completing small tasks.

Affiliate Marketing: If you have a blog or social media presence, you can promote products and earn a commission through affiliate marketing programs such as Amazon Associates.

Teaching and Tutoring: Platforms like VIPKid, Chegg Tutors, and iTalki allow you to earn money by teaching or tutoring online.

Remote Work Opportunities: Websites like Remote OK, We Work Remotely, and FlexJobs list remote job opportunities in various fields.