App Developer for Startups

A senior app developer who works like a member of your startup — web, iPhone and AI apps, built lean and shipped early. From $25/hour.

Startups do not need an agency that sends a 40-page proposal. They need someone who understands that the first version exists to learn, and who can build web and mobile apps quickly without leaving a mess behind.

What we build for startups

  • Web apps — the product, the admin and the payments, ready for real users.
  • iPhone and Mac apps in SwiftUI when native matters.
  • AI features with ChatGPT or Claude where a model does real work.
  • Landing pages and waitlists to test demand before the product exists.

How we work with startups

Short cycles, a live link from the first week, and direct contact with the developer writing the code. We scope by learning goals — what you need to find out next — not by feature lists.

Finding the right app developer

Ask any developer you talk to three things: what would you leave out of version one, who owns the code and accounts, and how will I see progress each week. Our answers: most of it, you do, and a live link.

Pricing

$25/hour, estimate first, no retainer.

Tell us where the startup is and what the app needs to prove.

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PRICES

Transparent pricing for every stage of your product journey.

Prefer to go hourly?

Talk about hours

From

$25 per hour

Standard rate. Pay as you go, no minimum commitment.

Best value

$20 per hour

Long-term projects. Ongoing work from 1 month+.

With any long-term or more than 8h of custom services, you get a free project website (domain not included).

Frequently Asked Questions

Everything you need to know before we start.

How fast can you ship an MVP?

Working prototypes typically ship in 2 days to 1 week. Full investor-ready MVPs in 1-4 weeks depending on scope. Let us know if you need emergency deliveries and we will take care of it.

Who owns the code and IP?

You do. 100%. We hand over the repository, deployment, infrastructure, and all IP rights at delivery.

What does the hourly rate include?

Senior engineering across product, code, design, AI integration, DevOps and project management. No agency markups.

Do you offer fixed-price projects?

Yes, for well-scoped MVPs we provide a fixed quote after a free 30-minute strategy call.

What stack do you work in?

Modern web (React, Next.js, Node), Python for AI/ML, mobile via React Native or Flutter, and Claude / OpenAI for LLM features.

How do payments work?

30% upfront, 30% mid-project, 40% at delivery. We accept SEPA, wire transfer, and Stripe.

Will you sign an NDA?

Yes. We sign NDAs before sharing any project details, your idea is safe with us.

Can you take over an existing project?

Yes, we frequently rescue stalled projects. We start with a 1-week audit before committing to a rebuild plan.

Start a build

Ready to Build Your MVP?

Book a free strategy call and let's discuss how we can bring your idea to life.

Free · 30 min · No commitment · NDA on request

or email hello@datamonkeys.ai · Discord: datamonkeys

Or tell us about your project

Get a free 24h estimate

We reply within 24h. No spam, ever.