You can test a startup idea with a real app in an afternoon: claim the free template closest to the idea, put your name and colour on it, install it on twenty phones by sending a link, and reshape it in plain English as the feedback comes in. The whole loop costs a plan at$5 a month and a few credits per change.
Why a mockup is the wrong test
A clickable design tells you whether people understand the idea. It cannot tell you whether they come back on Thursday. That is the question that matters, and the only way to ask it is an icon on their home screen with accounts, data and notifications behind it. Founders spend months and a developer’s salary to get to that point, and most of what they build is the same sign-in, the same lists and the same settings screen every app has.
How to build an MVP without a developer
- Pick the template nearest the idea. A marketplace, a members club, a booking app, a social feed: the bones are usually already there.
- Claim it free, name it, choose a colour. It installs on your phone in minutes, with its own backend.
- Ask for the two changes that make it yours in the app’s chat. Each is a few credits.
- Send the Android install link to your first users. The link always serves the newest version, so every fix reaches them without you chasing anyone.
- Watch what they do, then ask for the next change.
What it costs
Templates are free every time. The Basic plan is $5 a month with 50credits, and a simple change is a few of them. Android needs no developer account to install. iPhone testers need the app signed through an Apple developer account, which is $99 a year and has to be yours.
Where it stops
Be honest with yourself about what this is: a finished template reshaped around your idea, not a bespoke platform. Anything that needs heavy media processing, background jobs or text messages is not something to promise in week one. The backend starts on a managed project with a storage cap, and moves to your own Supabase when you outgrow it. If the idea works, you can download the code, publish to the stores under your own developer accounts, and keep going with a developer who starts from something real instead of a whiteboard.