Supabase vs Firebase vs PlanetScale: Best Backend for Marketing Freelancers & Micro Agencies

The Quick Answer

Choose Supabase if you want an all-in-one, open-source tool for managing client data, project details, and even building a custom client portal. It uses PostgreSQL, which is great for organized lists of clients and projects. It also handles client logins and storing marketing assets. Choose Firebase if you need a very simple, real-time database for a niche internal app and are already deep in Google products. It's less ideal for your main client project data. Choose PlanetScale if you are building a huge, complex marketing tool for thousands of users, not just managing your own micro-agency's clients.

Side-by-Side Breakdown

Supabase offers a generous free tier, enough for your first 5-10 clients and projects, then scales up to $25/month Pro for more. It uses PostgreSQL, handles client logins (auth), file storage for ad creatives or reports, and real-time updates for things like a shared content calendar. It's open-source, giving you full control. Firebase has a free Spark plan, then pay-as-you-go. It uses NoSQL Firestore, which can be less organized for client records. It includes auth, hosting for simple landing pages, and integrates with other Google services if you use them heavily. PlanetScale has a free hobby tier, then $39/month. It uses MySQL, which is great for scaling. But its advanced features like schema branching and horizontal sharding are far more than any marketing freelancer or micro-agency would need. It also doesn't support foreign keys, which can complicate organized data.

When to Choose Supabase

You want a clear way to store client contact info, project statuses, content deadlines, and campaign metrics. PostgreSQL is perfect for this. You need a simple way to create client logins for a custom portal or reporting dashboard you build yourself. You need a place to store marketing assets like ad creatives, video files, or client reports (Storage). You value open-source tools that won't lock you into one company, and you can easily export your data if needed. You want to make sure clients can only see their own data, not other clients' information. This is called Row Level Security and Supabase handles it well.

When to Choose Firebase

You are building a very specific internal mobile app for your agency, like a quick-update tool for social media managers on the go, and need it to sync in real-time. You're already heavily invested in Google Cloud, G Suite, and other Google services, and want everything under one roof. You might build a quick chat feature into a client portal where real-time messages are key. You are comfortable with a less structured way of storing client data (NoSQL) and understand its limitations when you need to connect different pieces of information, like clients to projects to campaigns.

When to Choose PlanetScale

Let's be direct: almost never for a typical marketing freelancer or micro-agency. PlanetScale is built for giant applications that need to handle millions of queries per second and scale globally without downtime. If you're building the next Canva or Hootsuite from scratch, then maybe. But for managing your client roster, project tasks, or content calendar, it’s like using a rocket ship to go grocery shopping. Its main features, like database branching (testing schema changes like Git), are for development teams working on very large, complex databases.

The Verdict

For most marketing freelancers and micro-agencies, Supabase is the best starting point. It gives you an organized database (PostgreSQL) plus easy-to-use client logins and file storage. This is without the worries of Google lock-in or the complexities of NoSQL data for your core client information. Firebase is still strong for specific real-time mobile apps or if you're already all-in with Google. PlanetScale is for development teams building huge web services, not for your client project management needs. Avoid Firebase's NoSQL if your client data needs to be clearly linked (e.g., client A has projects X, Y, Z) – trying to query those connections becomes painful.

How to Get Started

To start with Supabase: Go to supabase.com, sign up, and create your first project. Your PostgreSQL database will be ready in under a minute. Use their table editor to create tables for 'Clients,' 'Projects,' or 'Content Calendar' directly, or write simple SQL commands. Install the Supabase client library in your chosen web framework to connect your custom client portal or internal tool. To start with Firebase: Create a project at firebase.google.com, add the Firebase SDK to your app, and use their Firestore rules editor to set who can access which data. To start with PlanetScale: Sign up at planetscale.com, create a database, then create a 'development branch' to make your schema changes. Again, this is much more involved than most micro-agencies require.

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