BookCoverAI vs Sandcastles

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

BookCoverAI compared with Sandcastles
Detail	BookCoverAI	Sandcastles
What it does	AI-powered KDP book cover generator for Kindle eBooks, paperbacks, and hardcovers without manual design work	Create viral short-form videos in seconds
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	US
Pricing model	Paid	Paid
Pricing	Starter Pack: $3.99 for 40 credits (1 print-ready cover download + 10 AI generations); Author Pack: $9.99 for 120 credits (up to 4 print-ready downloads + up to 120 generations); Studio Pack: $24.99 for 350 credits (up to 11 print-ready downloads + up to 350 generations). Free credits available for	Pro: $49/month (billed monthly) or $39/month (billed yearly). Visionary: $99/month (billed monthly) or $79/month (billed yearly). Titan: $499/month (billed monthly) or $399/month (billed yearly).
Key features	AI cover generation based on book details and genre Kindle eBook cover export at 1600 × 2560 px Full-wrap paperback PDF with front, spine, and back cover Hardcover full-cover PDF with wrap and hinge space Bleed, margin, and barcode-safe area setup Genre-specific cover styles and presets Reference image upload to guide cover style Print-ready ZIP export with PDF, front image, and specs No design skills or KDP knowledge required	Customizable feed of successful channels from Instagram, TikTok, and YouTube Find top-performing viral outlier videos in any niche In-depth analysis of why videos went viral with hooks and storytelling frameworks Instant transcript downloads from any video AI-powered script writing using proven storytelling frameworks Hook template generation with millions of validated views Project organization to collect and manage winning video ideas Monthly credits system for analyzing videos, writing scripts, and generating reports Multiple workspace creation to organize content by niche Personal analytics tracking and competitor monitoring
What makes it different	Eliminates manual spine math and bleed calculations for print covers Purpose-built for KDP publishing workflow, not a general design canvas Supports all three KDP formats in one tool: Kindle eBook, paperback, and hardcover AI tuned to genre visual conventions and thumbnail legibility Commercial publishing rights to downloaded covers	Analyzes millions of videos daily to find top 1% outliers in every niche Data-backed storytelling frameworks based on billions of views All-in-one platform combining research, analysis, and script generation No social media account connection required to get value
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	25 −3 (down) since last check	48 +1 (up) since last check
Trust Flow (Majestic)	3	8
Citation Flow (Majestic)	30	32
Referring domains (Majestic)	54	151

5 details filled in for both companies.

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