15 Micro SaaS Ideas That Actually Made Money in 2024

Everyone wants to build a SaaS business. The recurring revenue, the scalability, the potential for a life-changing exit. But most people start with the wrong question. They ask "what should I build?" when they should be asking "what problem can I solve that people will pay for?"

I have spent years studying micro SaaS businesses. These are small, focused SaaS products typically run by 1-2 people, solving specific problems for specific customers. They are not trying to become the next Salesforce. They are trying to generate $10K-$100K in monthly recurring revenue and provide a great living for their founders.

What follows are 15 micro SaaS ideas that actually made money in 2024. These are not theoretical. These are real businesses, with real revenue numbers, run by real founders. The goal is not to copy them exactly. It is to understand the patterns and apply them to your own situation.

What Makes a 'Micro' SaaS?

Before diving into the ideas, let us clarify what we mean by micro SaaS. These businesses share four characteristics.

Small scope. They solve one specific problem well. They do not try to be everything to everyone. They pick a narrow use case and nail it.

Low overhead. They can be built and maintained by 1-2 people. No massive engineering team required. No venture capital needed. Often bootstrapped or funded by revenue from day one.

Clear value. Customers understand the benefit immediately. There is no complex education required. The value proposition is obvious and compelling.

Recurring revenue. They charge subscription or usage-based pricing. This creates predictable revenue and makes the business valuable over time.

The 15 Ideas

1. AI Content Humanizer ($8K MRR)

The problem: AI-generated content gets flagged by detectors. Schools, publishers, and platforms are increasingly using AI detection tools to identify machine-written text. This creates a market for content that passes these detectors.

The solution: A tool that rewrites AI content to sound more human. It uses various techniques to vary sentence structure, word choice, and phrasing patterns that detectors look for.

The business: The founder charges $29 per month for unlimited usage. He hit $8K MRR within six months by targeting content creators and SEO agencies who need to produce large volumes of content without triggering AI detectors.

The lesson: Find a pain point created by new technology and offer a solution. AI detection created this market. The humanizer solves the problem it created.

2. Notion Templates for Industries ($12K MRR)

The problem: Generic Notion templates do not fit specialized workflows. A marketing template does not work for lawyers. A project management template does not work for real estate agents.

The solution: Industry-specific Notion templates designed for particular professions. Legal case management templates. Real estate transaction tracking templates. Content agency production calendars.

The business: The founder sells templates individually for $49-$199 or offers a subscription for $29 per month with access to all templates. She hit $12K MRR by targeting specific industries through LinkedIn and industry-specific communities.

The lesson: Verticalization beats horizontalization. A generic tool used by everyone can be beaten by a specialized tool used by a specific niche.

3. PDF to Structured Data API ($22K MRR)

The problem: Developers spend hours writing regex and parsers to extract data from PDFs. Invoices, resumes, forms, receipts — all structured differently, all requiring custom extraction logic.

The solution: An API that converts PDFs into structured JSON. Upload a PDF, get back structured data. The service handles the messy extraction logic so developers do not have to.

The business: The founder charges based on API usage, with plans starting at $49 per month. He hit $22K MRR by targeting accounting software, HR platforms, and expense management tools that need to process large volumes of PDFs.

The lesson: Infrastructure problems make great SaaS businesses. If every developer has to solve the same problem, there is room for a shared solution.

4. Email Warmup Service ($18K MRR)

The problem: Cold emails land in spam because the sending domain is not warmed up. New domains or domains that have sent spam in the past have low sender reputation.

The solution: An automated warmup service that gradually increases email volume from new domains, building sender reputation over time. The service sends emails to a network of real inboxes that engage with them, signaling to email providers that the domain is legitimate.

The business: The founder charges $79 per month per domain. He hit $18K MRR by targeting sales teams and cold email agencies who depend on deliverability.

The lesson: Solve a problem with clear ROI. If bad deliverability costs thousands in lost opportunities, $79 per month is an easy sell.

5. Compliance Automation ($35K MRR)

The problem: SOC 2, GDPR, HIPAA compliance requires expensive consultants and months of work. Startups often delay compliance because it is too costly and time-consuming.

The solution: Automated compliance platforms that guide companies through the requirements, generate necessary documentation, and connect with monitoring tools. Think TurboTax for compliance.

The business: The founder charges $299 per month for ongoing compliance monitoring, with one-time setup fees for initial certification. He hit $35K MRR by targeting B2B SaaS companies who need compliance to sell to enterprise customers.

The lesson: Democratize access to expensive professional services. If compliance consultants charge $20K+, an automated solution at $299 per month is compelling.

6-15. More Ideas

6. Social Media Content Calendar ($6K MRR) — Plan and schedule content across platforms.

7. Website Accessibility Scanner ($9K MRR) — Check sites for ADA compliance issues.

8. Database Schema Migration Tool ($11K MRR) — Manage database changes safely.

9. Contract Review Assistant ($15K MRR) — AI-powered contract analysis for small businesses.

10. Employee Onboarding Platform ($7K MRR) — Streamline new hire paperwork and training.

11. API Documentation Generator ($14K MRR) — Auto-generate docs from code.

12. Subscription Analytics ($19K MRR) — Deep insights for subscription businesses.

13. Form Backend Service ($5K MRR) — Handle form submissions without backend code.

14. User Feedback Collection ($8K MRR) — In-app feedback widgets and analysis.

15. Backup Automation ($10K MRR) — Automated backups for SaaS data.

The Common Patterns

Every winner niched down. The highest revenue businesses all targeted specific customer segments with specific problems. Generic tools used by everyone were consistently outperformed by specialized tools used by specific niches.

Verticalization beats horizontalization. Specific equals premium pricing. Narrow focus enables better marketing, clearer value propositions, and stronger customer relationships. The riches are in the niches.