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PROMPTUARY vs Sandcastles

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

PROMPTUARY compared with Sandcastles
DetailPROMPTUARY logo PROMPTUARYSandcastles logo Sandcastles
What it doesFree AI image prompt vault with structured formulas Create viral short-form videos in seconds
StageNot given Not given
FoundedNot given Not given
Based inIT US
Pricing modelFreemium Paid
PricingFree: €0. Pro: €7.90/month billed annually (€94.80/year, 20% off monthly rate). Ultra: €15.90/month billed annually (€190.80/year, 20% off monthly rate). Pro and Ultra launch soon; founding members lock the launch price. 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
  • Structured MODEL/STYLE/SCENE prompt formulas
  • Copy-ready prompts, one per image slide
  • Works across multiple AI image generators
  • Browse by craft category
  • Weekly new formula drops
  • 1-click presets for image models (Pro)
  • Branded PDF pack export (Pro)
  • Early access to video prompts (Pro)
  • Full-res image downloads (Ultra)
  • 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
  • Formulas designed to survive model updates and regeneration cycles
  • Every image in the vault is the actual output of its formula, not stock or borrowed content
  • Variable-labeled structure lets you change one part intentionally without breaking the whole
  • Completely free vault with no paywall on core formulas
  • 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 planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)3 +3 (up) since last check48 +1 (up) since last check
Trust Flow (Majestic)38
Citation Flow (Majestic)1832
Referring domains (Majestic)4151

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