1. Upwork (upwork.com) – Good for finding experienced developers at different price ranges.

2. Fiverr (fiverr.com) – Best for small, budget-friendly projects.

3. Toptal (toptal.com) – More expensive but high-quality developers.

4. Freelancer (freelancer.com) – Affordable, but you must screen candidates carefully.

5. PeoplePerHour (peopleperhour.com) – Good for European and Asian freelancers at lower rates.

Outsourcing Companies (Best for Complex Apps on a Budget)

If you need a full development team at a lower cost, consider outsourcing companies from:

India (Cost-effective with skilled developers)

Pakistan (Affordable and high-quality development)

Eastern Europe (Higher quality but still more affordable than Western developers)

You can find these agencies on platforms like Clutch.co or GoodFirms.

Social Media & Developer Communities (Best for Direct Hiring)

LinkedIn – Post a job or connect with mobile developers directly.

Facebook Groups – Search for groups like "Freelance App Developers" or "Android & iOS Developers for Hire."

Reddit – Subreddits like r/forhire or r/programming can help.

GitHub & Stack Overflow – Find developers who contribute to open-source projects.

Local Talent (Best for Long-Term Work)

If you're looking for someone local, try:

University students (affordable and eager to gain experience)

Tech incubators and co-working spaces