Build an AI caption rewriter for multi-platform social
12/15The Opportunity
Spotted on Reddit · March 21, 2026
The same post needs different tone, length, and hashtags for Instagram, LinkedIn, and Facebook. Manual rewriting is the biggest content bottleneck for SMBs.
Why these scores?
Demand (pain) scored 5/5 (very high) — how urgently people need a solution.
Willingness to pay scored 5/5 (very high) — evidence people would pay for this.
Market gap scored 3/5 (strong) — how underserved this space is.
Build effort scored 4/5 (very high) — feasibility for a solo builder or small team.
Who's Complaining About This?
“Canva → caption → Facebook → resize for Instagram → rewrite for LinkedIn → adjust for Google Business. This process needs to happen 4x per week minimum.”
Willingness to Pay
SMBs currently pay $400/month VAs to handle this. A $49-99/month tool that replaces VA time for content mechanics has clear ROI.
Score Breakdown
12/15How urgently people need this solved and how willing they are to pay for it. Based on complaint frequency and spending signals across platforms.
How open the market is. A high score means few or no direct competitors, or existing solutions are overpriced and underdeliver.
How quickly a solo developer can ship an MVP. 5 = weekend project with standard tools. 1 = months of infrastructure work.
Existing Solutions
Jasper ($49-99/mo, copywriting), Copy.ai ($49/mo, copywriting) — neither integrates resize + cross-platform workflow end-to-end