Question: Is there a boilerplate app that can help me save time on building user authentication and subscription billing for my SaaS project?

If you want to speed up your SaaS project development, Bullet Launch is worth a look. It's a full-featured SaaS boilerplate app for Bubble.io that includes user authentication, multi-tenancy, subscription billing, and integration with popular tools like Stripe and Lemon Squeezy. It's also accompanied by detailed documentation and video tutorials, which makes it a good option for solo founders, developers, and entrepreneurs who want to get their project up and running as fast as possible without needing to know how to code.

Another top contender is SaaSBold, a full-stack SaaS boilerplate built on Next.js, React, and Node.js. It provides a simple SaaS product development experience with features like payments and subscriptions with Stripe, transactional emails, an admin dashboard, and multidimensional authentication. With SEO and performance optimizations, it's designed to get you up and running fast and efficiently.

If you're looking for a Next.js SaaS boilerplate with security and compliance built in, check out Staarter. It has strong authentication, easy subscription management, full localization support, and an easy-to-use admin dashboard. With payment management, usage limits, and analytics tracking, Staarter promises to save you more than 50 hours of development time with a single lifetime access payment of $399.

Last, Kobble is an all-in-one platform for bootstrapping SaaS apps quickly. It includes authentication, payments, and emailing, and integrates with modern frameworks like Next.js. With a no-code authentication portal and pre-built frontend components, Kobble lets developers focus on their business by handling the technical details for them.