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StackTools vs StudyChime

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

StackTools compared with StudyChime
DetailStackTools logo StackToolsStudyChime logo StudyChime
What it doesPrivate browser tools for everyday work Private Prolific study notifications for Chrome, Discord, Telegram and Pushover
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFree Freemium
PricingNot given Free: browser alerts, local milestones, 5 external-alert batches per rolling 24-hour period. Premium: £4.99 one-time payment for lifetime access, includes unlimited external alerts, filter profiles, alert schedules, Remote snooze and resume, custom sounds, and local Study Trends.
Key features
  • PDF merge, split and compress
  • Convert Word, Excel, images to PDF
  • OCR, redact and protect PDFs
  • Compress images (JPG, PNG, WebP, AVIF)
  • Convert HEIC images
  • Background removal
  • On-device image upscale
  • Works offline after first load
  • No signup required
  • Browser and Discord, Telegram, Pushover notifications
  • Reward, availability, time, and keyword filters
  • Reusable filter profiles and alert schedules
  • Local Study Trends with 7, 30, 90, and 12-month views
  • Remote snooze and resume from phone alerts
  • Local milestones and progress tracking
  • 14-day Premium trial with no card required
  • Monitoring health status display
What makes it different
  • Files process in your browser with no uploads to servers
  • No account, no credit card, no friction
  • Works offline after first visit
  • Private alerts sent only to services you control, not to StudyChime
  • Does not automatically accept, reserve, refresh, complete or submit studies
  • No Prolific password or cookie permissions required
  • Local-first data storage with privacy-minimised Study Trends
  • One-time £4.99 lifetime Premium purchase with no subscription
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)8 no change since last check1 no change since last check
Trust Flow (Majestic)40
Citation Flow (Majestic)1414
Referring domains (Majestic)43

4 details filled in for both companies.

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