MySQL vs Supabase for Solo Developers

Quick Comparison

MySQL Overview

MySQL is the relational database that built the web. It powers WordPress, countless PHP applications, and traditional web stacks. You get tables, SQL queries, foreign keys, and a massive ecosystem of tools and hosting support. Every shared hosting provider, every cloud platform, and every framework supports MySQL.

For a solo developer in the PHP/WordPress ecosystem, MySQL is the natural choice. The LAMP stack (Linux, Apache, MySQL, PHP) has been powering websites for over two decades. The documentation is extensive, the community is enormous, and problems have well-known solutions.

MySQL is straightforward to set up and use. The learning curve is gentle, and you can go from zero to a working database in minutes. For standard CRUD operations, it handles everything you need.

Supabase Overview

Supabase is not just a database. It is a complete backend platform built on PostgreSQL. You get a managed Postgres database, authentication (email, OAuth, magic links), file storage, edge functions, real-time subscriptions, and an auto-generated REST API. It replaces half a dozen separate services with one platform.

The free tier is genuinely generous. Supabase's own pricing page lists it at $0 with two active projects, 500 MB of database storage, 1 GB of file storage, 50,000 monthly active users for auth, 5 GB of egress, and shared compute with 500 MB of RAM. The Pro plan at $25/mo lifts those ceilings to 8 GB of database storage, 100 GB of file storage, 100,000 monthly active users, and 250 GB of egress, with a $10 compute credit baked in that covers a Micro instance. Past the included amounts you pay metered rates, and those rates are the basis for the cost math further down this post.

Because Supabase uses PostgreSQL underneath, you get all of Postgres's features: JSONB, full-text search, row-level security, array types, and the extension ecosystem. Your data is in a standard Postgres database that you can connect to with any Postgres client.

Key Differences

Supabase is a platform, MySQL is just a database. This is the fundamental difference. MySQL stores your data. Supabase stores your data AND handles authentication, file uploads, real-time subscriptions, serverless functions, and auto-generated APIs. Choosing MySQL means you build or integrate these features separately.

PostgreSQL is more capable than MySQL. Supabase runs PostgreSQL, which has features MySQL lacks: JSONB with full indexing, native array types, materialized views, row-level security, and a richer extension ecosystem. From a pure database perspective, Postgres under Supabase gives you more tools than MySQL.

Development speed is dramatically different. With MySQL, building a basic authenticated CRUD app requires: setting up a database, writing API endpoints, implementing authentication, configuring file storage, and building real-time features from scratch. With Supabase, you sign up, create a project, and all of these exist immediately. For a solo developer, this difference is measured in days or weeks.

Cost for the full stack matters. MySQL is free, but authentication, file storage, and real-time features are not. By the time you add Auth0 or Clerk for auth, S3 or Cloudflare R2 for storage, and Pusher or Ably for real-time, you are paying more than Supabase's $25/mo Pro plan and managing multiple services.

Vendor lock-in is lower than you think with Supabase. Your data lives in standard PostgreSQL. You can connect with any Postgres client, export your data with pg_dump, and migrate to any other Postgres host. The platform features (auth, storage, functions) use Supabase-specific APIs, but the database itself is portable.

MySQL has deeper hosting support for legacy environments. Shared hosting, cPanel, managed WordPress, old-school VPS setups. MySQL is available everywhere. Supabase is a cloud service that requires an internet connection. If you need a database on a $3/mo shared host, MySQL is your only option.

When to Choose MySQL

• You are building a WordPress site or PHP application
• You are deploying to shared hosting or legacy infrastructure
• You already have a backend framework handling auth and APIs (Laravel, Django)
• You need the widest possible hosting compatibility
• You are working with an existing MySQL codebase

When to Choose Supabase

• You want a complete backend without building auth, storage, and APIs yourself
• You are building a frontend-first application (React, Next.js, SvelteKit)
• You want a generous free tier for side projects
• You need real-time features without WebSocket infrastructure
• You want to ship an MVP as fast as possible

By the Numbers (2026)

Voice and vibes are fine, but a comparison earns trust when the numbers are real. Here is what I could verify from primary sources, each checked on 2026-05-29 and listed in the Sources section below.

Driver adoption (npm, weekly downloads). The most common MySQL driver for Node is mysql2, and the official Supabase client is @supabase/supabase-js. For the week of May 21 to May 27, 2026, the npm registry reported about 10,660,594 downloads for mysql2 and about 19,918,901 downloads for @supabase/supabase-js. Two things stand out. First, both are enormous, so neither tool is a fringe bet. Second, the Supabase client pulls nearly double the weekly traffic of the MySQL driver, which tells you where greenfield JavaScript projects are leaning.

Latest published versions. As of the checks above, the npm registry lists the MySQL driver mysql2 at 3.22.4 and the Supabase client @supabase/supabase-js at 2.106.2, with the supabase-js v2.106.2 release dated 2026-05-25. Both packages are actively maintained, which matters more for a solo dev than raw version numbers. You are not adopting an abandoned package in either direction.

The engines themselves. On the database side, MySQL's latest release is 9.7.0, the first LTS line since 8.4, published 2026-04-07 per endoflife.date. Supabase runs PostgreSQL underneath, and Postgres is on the 18 series, with the most recent minor release 18.4 dated 2026-05-11. Both engines are current and well past the "is this still maintained" question.

Source repositories. The mysql/mysql-server mirror on GitHub shows about 12.3k stars. The supabase/supabase monorepo shows about 103k stars, which puts it among the most-starred backend projects on GitHub. Star counts are a popularity signal, not a quality verdict, and MySQL's lower count reflects that the canonical source lives in Oracle's own systems rather than GitHub. Treat these as directional.

Pricing, straight from the vendor. Supabase publishes its tiers openly: Free at $0, Pro at $25/mo, Team at $599/mo, and Enterprise at custom pricing. MySQL the engine is free and open source under the GPL, so its real cost is whatever you pay to host it. That distinction is the whole game for a solo dev, and it is exactly what the next section works out in dollars.

Real Cost at Solo-Dev Scale

Comparing "free" to "$25/mo" is misleading, because MySQL being free as software does not make a running backend free. Let me cost out a realistic solo-dev app and compare apples to apples.

The workload. A small SaaS or side project with about 2,000 monthly active users, a 2 GB database, 10 GB of uploaded files, modest traffic, plus the three things every real app needs beyond raw storage: authentication, file storage, and a way to talk to the data.

Path A, Supabase. This workload sits comfortably inside the Pro plan. The database (2 GB) is well under the 8 GB included. Files (10 GB) are well under the 100 GB included. Users (2,000) are far under the 100,000 MAU included. Egress on a project this size stays under the 250 GB included for most apps. So the metered overage rates ($0.125/GB database, $0.0213/GB storage, $0.00325/MAU, $0.09/GB egress) do not even kick in. Auth, storage, and the auto-generated API are part of the platform, not add-ons.

Supabase Pro total: $25/mo, with the included $10 compute credit already covering the Micro instance.

Path B, MySQL plus the pieces it does not include. MySQL gives you the database and nothing else, so you assemble the rest:

• A managed MySQL instance or a small VPS to self-host it. Budget roughly $10 to $15/mo for a small managed database or VPS. Self-hosting on a VPS is cheaper in dollars but costs you the time to run backups, patches, and security yourself. Check current rates with your host of choice.
• Authentication. Either you build and maintain it yourself, or you reach for a managed auth provider. Several have free tiers around the 2,000 to 10,000 active-user mark, after which paid tiers begin. Plan for $0 today with a real chance of a paid tier as you grow. Check current pricing for whichever provider you pick.
• File storage. Object storage like S3-compatible buckets is cheap per gigabyte, so 10 GB of files is a small line item, often a few dollars or less. Check current per-GB rates.
• The API layer. With MySQL you write and host the endpoints yourself, which is $0 in software but real hours in build and maintenance.

Path B can start cheaper than $25/mo in raw dollars, especially if you self-host and stay on free auth tiers. The catch is that the bill is spread across multiple services you now operate, and several of those free tiers convert to paid as you grow. The number that does not show up on any invoice is your time. Supabase folds auth, storage, and the API into one $25 line, while the MySQL path trades dollars for assembly and operations work.

For a solo dev, the honest read is this. If you are already deep in a framework that handles auth and APIs for you (Laravel, Django), MySQL plus cheap hosting can genuinely beat $25/mo. If you are starting fresh and would otherwise be wiring up auth, storage, and an API by hand, Supabase's flat $25 usually wins once you price in the hours.

The Verdict

Supabase wins this comparison convincingly. The 10/10 vs 7/10 gap reflects the reality that Supabase gives you a better database (PostgreSQL vs MySQL) plus an entire backend platform on top. For a solo developer building a new project, getting auth, storage, real-time, and a REST API out of the box is a massive time saver.

MySQL still makes sense for WordPress sites, PHP applications, and legacy projects where MySQL is already established. But for new projects, especially frontend-heavy applications where you need a backend without building one from scratch, Supabase is the tool that helps you ship faster. The free tier lets you validate your idea before spending a dollar, and the PostgreSQL foundation means you are not locked into a proprietary system.

Sources

All figures above were checked on 2026-05-29.

• Supabase pricing tiers and limits (Free $0, Pro $25/mo, Team $599/mo, metered overage rates): https://supabase.com/pricing
• @supabase/supabase-js latest published version (2.106.2): https://registry.npmjs.org/@supabase/supabase-js/latest
• @supabase/supabase-js weekly npm downloads (19,918,901 for 2026-05-21 to 2026-05-27): https://api.npmjs.org/downloads/point/last-week/@supabase/supabase-js
• mysql2 latest published version (3.22.4): https://registry.npmjs.org/mysql2/latest
• mysql2 weekly npm downloads (10,660,594 for 2026-05-21 to 2026-05-27): https://api.npmjs.org/downloads/point/last-week/mysql2
• MySQL latest engine release (9.7.0 LTS, 2026-04-07): https://endoflife.date/mysql
• PostgreSQL latest engine release (18.4, 2026-05-11): https://endoflife.date/postgresql
• mysql/mysql-server GitHub repository (about 12.3k stars): https://github.com/mysql/mysql-server
• supabase/supabase GitHub repository (about 103k stars): https://github.com/supabase/supabase