Sandcastles
AI-powered content research and scriptwriting platform that finds viral short-form video patterns, analyzes top-performing hooks and structures, and generates ready-to-record scripts.
Overview
Use cases
- Viral video research and pattern analysis
- Short-form script generation (Reels, TikTok, Shorts)
- Competitor content strategy reverse-engineering
- Hook testing and optimization
- Content ideation at scale for agencies
Key features
- Viral outlier video discovery across TikTok, Instagram, YouTube
- AI hook generation with 4 validated hook types
- Full video script writing from ideas, outlines, or drafts
- Channel watchlists with performance tracking
- Transcript and storytelling structure analysis
- Personal vault for saving winning formats and hooks
- Credit-based usage (100-1500/mo by tier)
Pricing
| Tier | Price | Includes |
|---|---|---|
| Pro | $49/mo | 100 credits, track 50 channels, script writing, hook engine |
| Visionary | $99/mo | 250 credits, track 100 channels, AI agents (coming soon) |
| Titan | $499/mo | 1500 credits, 1000 channels, API access, workspace guests |
Free plan or trial: 7-day free trial on all plans
Integrations
Instagram, TikTok, YouTube Shorts.
Best for
Short-form video creators and social media marketers who want data-driven scripts instead of guesswork. Especially strong for TikTok, Reels, and YouTube Shorts creators studying what works in their niche.
Company size fit: Solo/Freelancer, Startup (1-10), SMB (11-50)
Alternatives
Category
Primary: Create content & assets → Video & audio production
Tier 1 Basic · Last reviewed 2026-04-22