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Listenly vs Sandcastles

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

Listenly compared with Sandcastles
DetailListenly logo ListenlySandcastles logo Sandcastles
What it doesConvert any text into natural-sounding audio Create viral short-form videos in seconds
StageNot given Not given
FoundedNot given Not given
Based inNot given US
Pricing modelNot given Paid
PricingPay-as-you-go credits: Standard voices ~$1.50/hour, HD voices ~$3.50/hour. Free tier: 20 minutes with Standard voices. Occasional listener: $15 in credits. Pro listener: $50 in credits. Credits never expire. 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
  • 36 different AI voices to choose from
  • Automatic document cleaning removes headers, page numbers, and footnotes
  • Support for over 50 languages
  • Export audio in M4A or M4B formats
  • Mobile browser support with app coming
  • Standard and HD voice quality options
  • Public library with thousands of narrated books
  • Convert links, files, and pasted text to audio
  • 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
  • Natural-sounding narration using latest AI text-to-speech models
  • Intelligent cleaning of messy documents before narration
  • Pay-as-you-go credit system with no subscription required
  • Large public library of high-quality narrated books
  • 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)11 +1 (up) since last check48 +1 (up) since last check
Trust Flow (Majestic)118
Citation Flow (Majestic)3032
Referring domains (Majestic)100151

4 details filled in for both companies.

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