Do I Need a Consent Management Platform as a Solo Developer?

At some point, every solo developer building a SaaS with EU users runs into the same search result: "consent management platform." The tools that show up — OneTrust, Cookiebot, TrustArc — are built for enterprises with dozens of data sources, compliance teams, and six-figure budgets. If you're one person shipping a product from your laptop, the natural reaction is either "I definitely need this" (and then sticker shock) or "this can't possibly apply to me" (and then you ignore GDPR entirely). Neither reaction is quite right.

The honest answer is: it depends on what you're actually doing with user data, and the gap between "doing nothing" and "enterprise CMP" is bigger than most solo devs realize.

What a Full Consent Management Platform Actually Does

Enterprise CMPs are built to solve problems most solo products don't have yet: 1.Coordinating consent across dozens of internal systems and data warehouses 2.Managing consent for multiple brands, subsidiaries, or regions with different legal regimes 3.Automatically scanning your site for every tracking script and categorizing them 4.Providing legal teams with dashboards, reporting, and audit workflows across large organizations 5.Integrating with a sprawling vendor ecosystem (ad tech, CDPs, multiple analytics tools)

If none of that describes your product, you're not the target customer for these tools — and paying for one is solving a coordination problem you don't have.

What You Actually Need as a Solo Developer

Strip GDPR consent requirements down to their core, and a solo SaaS with a handful of third-party tools (analytics, email, payments) needs exactly three things:

1. A consent capture mechanism — a banner or form that presents unbundled choices per purpose (analytics, marketing, etc.)
2. A consent log — a persistent record of who consented to what, when, and under which policy version
3. A way to export a user's consent history— so you can answer a data subject request or audit query without writing custom queries under pressure

That's it. No dashboards for a legal team that doesn't exist yet, no cross-brand coordination, no automated script-scanning across a data warehouse you don't have.

When a Heavier Tool Actually Starts to Make Sense

There's a real point where "just log it yourself" stops being the right answer. Signs you're outgrowing a lightweight setup:

• You're integrating a genuinely large number of third-party trackers and manually categorizing each one is becoming unmanageable
• You have a dedicated legal or compliance person who needs reporting dashboards, not raw database access
• You operate across multiple brands or regions with materially different consent requirements per market
• You're being contractually required by an enterprise customer's security review to use a named, audited CMP vendor specifically

If none of these apply to you today, building or adopting a lightweight logging layer is proportionate. Buying enterprise tooling at this stage is spending real money and integration time to solve a scale problem you don't have yet.

The Risk of Going Too Minimal, Too

The opposite mistake is just as common: deciding a consent management platform is overkill and therefore doing nothing beyond a basic cookie banner with no persistent logging behind it. This isn't "appropriately minimal" — it's a compliance gap. A cookie banner shows you asked; it says nothing about who answered, what they answered, or when. Under GDPR Article 7, you as the controller carry the burden of proof — "we had a banner" doesn't answer "show me this specific user's consent record."

The right minimal setup still needs the three things listed above. What you can skip is the enterprise coordination layer, not the underlying record-keeping.

A Practical Way to Decide

Ask yourself these questions:

1. Can I currently answer "did this specific user consent to marketing emails, and when?" in under five minutes? If not, you have a gap regardless of company size.

2. Am I managing consent across more brands, regions, or legal entities than just "my one product"? If yes, lean toward a real platform.

3. Is a customer's security review specifically requiring a named CMP vendor? If yes, that's a business requirement, not just a compliance one — comply with what's being asked.

4. Am I the only person who will ever look at this data, with a handful of third-party tools? If yes, a lightweight logging setup is proportionate and sufficient.

For the vast majority of solo developers and small SaaS teams, the answer lands on the last option: you don't need an enterprise platform, but you do need real logging — not just a banner.

Building the Middle Ground

The gap between "nothing" and "enterprise CMP" is where most solo developers actually should live: a purpose-scoped, append-only consent log with a timestamp, policy version, and some evidence of what was shown to the user — built as a lightweight layer, not a company-wide platform.

You can build this yourself with a database table and a logging endpoint over a weekend. If you'd rather not own the ongoing maintenance — keeping the export path working, snapshotting banner updates, hashing IPs correctly — ConsentKeep was built specifically for this middle ground: consent logging sized for solo developers and small teams, without the enterprise platform overhead you don't need yet.