ApparenceKit vs SaaS UI

When choosing between ApparenceKit and SaaS UI, it's essential to understand the key differences that make each boilerplate unique. Both are excellent choices for building SaaS applications, but they cater to different needs and development approaches.

What is ApparenceKit?

ApparenceKit is a template generator for Flutter, created by a team with years of Flutter-app experience. On the surface, it’s pitched as a way to bypass many of the repetitive, boilerplate tasks that come with building a mobile (or web) app from scratch: authentication, user flows, payments/subscriptions, push notifications, onboarding, i18n (multilanguage), analytics, theming, and more. When you use ApparenceKit, you start your project by running a CLI that scaffolds a full Flutter app wired up with a backend option (you can choose between Firebase, Supabase or a custom REST API), pre-built modules for auth, subscriptions, notifications, and navigation, plus optional modules such as feedback/voting, translations, remote config, and more. This means that instead of spending weeks setting up the basics of your app (login logic, paywalls, push-notifications, internationalization, UI navigation, etc.), you get a “ready-to-go” foundation that you can build on immediately. For many simple or medium-complexity apps (MVPs, prototypes, early-stage mobile products), that can be a significant time-saver.

Developed by Apparence, ApparenceKit has become a popular choice among developers looking for a reliable starting point for their SaaS projects.

What is SaaS UI?

Saas UI is a premium starter kit / boilerplate built on Next.js (with React + TypeScript) designed specifically for building SaaS and B2B web applications quickly and with solid structure. It pairs a rich UI/design system with the backend scaffold and common SaaS plumbing so you don’t have to build everything from scratch. Right away you get a full-featured component library and design system prebuilt UI components, themes, responsiveness, dark/light mode support all optimized for building dashboards, admin panels, web apps or SaaS products. On the functionality side, Saas UI ships with support for user authentication (login/signup, social login options, account management), workspace/team/organization support (workspaces, team invites, role-based access), subscription & billing flows with Stripe (subscription plans, per‑seat or team‑based billing, metered usage and entitlement management), and built‑in support for multi-tenancy / per‑workspace billing/perms. The stack includes a modern backend API layer (via tRPC), a database setup that works with PostgreSQL (and other options), and a dev environment optimized for productivity (TypeScript, Turborepo/monorepo friendly configuration, sensible defaults for linting/formatting).

Created by Eelco Wiersma, SaaS UI offers a robust foundation for building scalable SaaS applications.

When building a SaaS application, choosing the right payment integration is crucial for monetization success. Let's compare the payment options available in ApparenceKit and SaaS UI.

Both ApparenceKit and SaaS UI are excellent choices for building SaaS applications. Your decision should be based on your specific requirements, budget, and technical preferences.

ApparenceKit is ideal if you're looking for a more affordable option with specific capabilities.

SaaS UI stands out for its comprehensive feature set and is perfect for developers who need authentication.

Ultimately, both boilerplates will help you launch your SaaS product faster and more efficiently. Review the detailed comparison above, consider your project requirements, and choose the one that aligns best with your goals.