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PromptShield vs Whisperly

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

PromptShield compared with Whisperly
DetailPromptShield logo PromptShieldWhisperly logo Whisperly
What it doesStop rewriting prompts. Get better AI answers. Not given
StageNot given Not given
FoundedNot given Not given
Based inNot given UZ
Pricing modelFreemium Freemium
PricingFree: 3 successful optimizations per day, full optimizer quality, no credit card required. Pro: $7.99/month for unlimited successful prompt optimizations. Free: 2,000 words per week with Clean-up and Raw modes, preserve tone, and 5 vocabulary terms. Pro: $14/month with unlimited words, Translate, all 4 tones, and unlimited vocabulary. 14-day free Pro trial on signup, no credit card required.
Key features
  • One-click prompt optimization across 7 AI chats
  • Prompt Library and Optimization History
  • Guard feature for sensitive information detection
  • Local image text OCR checking
  • Coach and Personalization
  • Apply without sending functionality
  • Clean-up mode removes fillers and false starts, fixes punctuation, keeps your wording
  • Raw mode provides verbatim transcription with punctuation
  • Translate: dictate in ~99 auto-detected languages, paste in 90+ languages
  • Four tones: preserve, neutral, casual, formal
  • Custom vocabulary for names and jargon
  • Works in any app with a text field
  • Audio is never stored
  • Auto-updates silently in the background
  • Mac build is Developer ID signed and notarized
  • Text saved to clipboard if paste fails
What makes it different
  • Same high-quality optimizer in both free and paid versions
  • No credit card required for free plan
  • Local data storage for library, history, and personalization
  • Works within existing AI chat interfaces without leaving them
  • Transparent about data handling and privacy
  • Preserves your voice and tone while cleaning up speech
  • Works everywhere instantly with no setup required
  • Translate across 99 input and 90+ output languages
  • Free plan stays free with 2,000 words per week
  • 14-day Pro trial without requiring a credit card
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)Not checked yet no change since last check3 no change since last check
Trust Flow (Majestic)99
Citation Flow (Majestic)1922
Referring domains (Majestic)935

4 details filled in for both companies.

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