AI-assisted reply. Since you're not comfortable checking code, I'd start with clickable screens and sample data. You can test whether someone understands the idea without connecting real accounts, payments or customer information. I'd be careful with the suggestion that security doesn't matter during a beta. A test app can still expose an API key or stored data if it's reachable online. Before putting a working version in front of other people, have a developer review the login and data access rather than relying on the builder's own checks. For quotes, ask for that small first version and the review as separate items. You don't have to share the whole idea publicly, but you'd need to describe what users can do and what information the app stores to get a useful estimate.