15 Micro-SaaS Ideas for Solo Developers

Micro-SaaS = small, focused products that solve one problem well. One developer, $5-10K MRR, lifestyle business. Here are 15 validated ideas.

What Makes a Good Micro-SaaS?

• Solves one specific problem
• Can be built in 2-4 weeks
• Users willing to pay $5-50/month
• Low support burden
• Defensible through specialization

The Ideas

1. Testimonial collector widget — Drop-in widget for collecting and displaying customer testimonials. $19/mo. Competitors: Testimonial.to but room for simpler version.
2. Changelog page builder — Beautiful changelog pages that users actually read. $9/mo.
3. Status page — Simple uptime monitoring + status page. Betteruptime is complex. Build a simpler version.
4. Email signature generator — Create branded email signatures. Freemium + $5/mo for custom domains.
5. Social proof notifications — "X people bought this today" — FOMO widget. $19/mo.
6. QR code menu builder — For restaurants. Still relevant post-COVID. $15/mo per restaurant.
7. Proposal/quote builder — For freelancers and agencies. Template-based, e-sign included. $29/mo.
8. Appointment booking — Calendly clone for specific niche (salons, trainers, therapists). $15/mo.
9. Invoice PDF generator API — Developer tool. Pay per invoice generated. $0.05-0.10 per invoice.
10. Waitlist page builder — Launch page + waitlist management + referral system. $19/mo.
11. Privacy policy generator — Auto-generate GDPR/CCPA compliant policies. $29 one-time.
12. RSS-to-email — Turn any RSS feed into a beautiful newsletter. $9/mo.
13. Link-in-bio for businesses — Like Linktree but with analytics and lead capture. $9/mo.
14. Customer feedback board — Feature request voting. Canny is expensive. Build cheaper. $19/mo.
15. Screenshot API — Programmatic screenshots of any URL. Developer tool. Pay per screenshot.