StudyChime vs Histiq

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

StudyChime compared with Histiq
Detail	StudyChime	Histiq
What it does	Private Prolific study notifications for Chrome, Discord, Telegram and Pushover	AI semantic search for your browser history and PDFs
Stage	Not given	Startup
Founded	Not given	Not given
Based in	Not given	US
Pricing model	Freemium	Freemium
Pricing	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.	Free 14-day trial (no credit card required, starts on install). Then: Monthly $6.99/mo, Annual $4.17/mo (billed $49.99/year, save 40%), or Lifetime $129 one-time payment.
Key features	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	Semantic search by meaning instead of exact keywords Automatic PDF indexing and search Sub-50ms search latency Works on Chrome and Edge from single install Privacy controls including domain blocklist and URL patterns Encrypted local backup and export No account or login required Support for PDFs up to 50 MB
What makes it different	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	Only browser history tool that is 100% local with zero data transmission to servers Includes full 14-day free trial with no credit card required Works across Chrome and Edge without requiring separate installs Lifetime purchase option with no recurring billing
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)	1 no change since last check	1 no change since last check
Trust Flow (Majestic)	0	2
Citation Flow (Majestic)	14	15
Referring domains (Majestic)	3	30

5 details filled in for both companies.

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