Platform Comparison

AssessKit vs Gorilla

Compare AssessKit and Gorilla Experiment Builder. Both platforms enable online behavioral experiments, but with different approaches to pricing and features.

Try AssessKit Free

Quick Summary

AssessKit

  • Free data collection - no per-participant fees
  • Built on jsPsych - industry-standard timing
  • Desktop app - run experiments offline
  • Real-time collaboration - work together live
  • Open ecosystem - export to jsPsych code

Best for: Researchers wanting free/low-cost option, jsPsych users, offline data collection needs.

Gorilla

  • Established platform - many published studies
  • Rich task library - many ready-to-use tasks
  • Good documentation - extensive tutorials
  • Pay-per-participant - costs scale with sample
  • Web-only - no offline option

Best for: Well-funded labs, researchers comfortable with per-participant costs.

Detailed Feature Comparison

Pricing

FeatureAssessKitGorilla
Free tier available
AssessKit: Unlimited experiments. Gorilla: Limited features.
No credit card required
Free data collection
Gorilla charges per participant
Transparent pricing
Gorilla: Quote-based for large studies

Ease of Use

FeatureAssessKitGorilla
No-code experiment builder
Drag-and-drop interface
Pre-built task templates
Real-time preview
Code access when needed

Task Library

FeatureAssessKitGorilla
Classic cognitive tasks
Stroop, Flanker, N-Back
IAT (Implicit Association)
100+ validated paradigms
Custom task creation

Technical Capabilities

FeatureAssessKitGorilla
Millisecond timing precision
jsPsych integration
AssessKit is built on jsPsych
Mobile-responsive
Offline capability
Desktop app (Electron)

Data & Integration

FeatureAssessKitGorilla
CSV/JSON export
Prolific integration
MTurk integration
SONA integration
API access

Collaboration

FeatureAssessKitGorilla
Team workspaces
Real-time collaboration
Version history
Experiment sharing

Pricing Comparison

AssessKit Pricing

Free to Start
  • • Unlimited experiments
  • • Free data collection
  • • No per-participant fees
  • • Paid plans for teams & advanced features
View Pricing

Gorilla Pricing

Pay-Per-Participant
  • • Free to build experiments
  • • Data collection requires tokens/credits
  • • Costs vary by sample size
  • • Enterprise pricing available
Visit Gorilla

Which Platform Should You Choose?

Choose AssessKit if you...

  • Want free or low-cost data collection
  • Already use or want to learn jsPsych
  • Need offline/desktop experiment capability
  • Want real-time collaboration features
  • Are a student or have limited budget

Choose Gorilla if you...

  • Have grant funding for participant fees
  • Want an established platform with long track record
  • Need their specific built-in task library
  • Your institution has a Gorilla site license

Try AssessKit Free

Build and deploy experiments without per-participant fees. Free to start, no credit card required.

Get Started Free