Most startups shouldn’t start with a native app. What you are building most likely doesn’t need native only features. All you are gaining by going native is increased costs, slower development, and platform risk.
Web Apps are good enough that they cover the general use case and with mobile technologies like Turbo Native, and there’s an easy escape hatch if you do need something that requires a native app.
Focus on your startup’s primary metrics, moving fast and learning from your customers.