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AI Instagram Caption SaaS for Small Brands
A tiny tool that writes 30 days of on-brand captions in 5 minutes.
By Priya Rajan
EdTech Product Lead & Former Teacher
Revenue
$500–$5,000
Startup cost
<$100
First $1
2–4 weeks
Difficulty
beginner
The idea in one paragraph
Small brands struggle to post consistently. Build a micro-SaaS that ingests 5 sample posts, learns the brand voice, and outputs a calendar of captions + hashtags. Charge $19/mo.
Tools you'll use
LovableOpenAIStripe
Step-by-step playbook
- 1
Define ICP
- 2
Build MVP
- 3
Launch on X
- 4
Price at $19
Frequently asked questions
Do I need ML expertise?
No. Prompt engineering on GPT-5-mini is enough.
What about competition?
Win on niche (one vertical) and voice quality, not features.
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