Industry standard tool inspired by MRII, and ESOMAR best practices.
Proven methods from market research leaders
CSV or Excel files processed locally in your browser
11 detection algorithms flag suspicious patterns
You decide what to keep or remove - full control
Download Excel with audit trail & methodology
100% match detection - finds identical responses from duplicate submissions or system errors
85%+ similarity detection - catches fraud where respondents change a few answers to avoid detection
70%+ identical answers - flags respondents not reading questions
Sequential pattern detection (1-2-3-4) - identifies automated or disengaged clicking
Completion time analysis - flags responses completed too quickly
All processing happens in your browser - no data sent to servers, no API calls, no storage
Enable in Custom Thresholds to activate these checks
Cap the percentage of total interviews any single data collector can complete
Flag suspiciously short gaps between consecutive interviews by the same interviewer
Detect interviews conducted outside acceptable fieldwork hours
Find duplicate values in specific columns like phone numbers, emails, or IDs
Validate interviews fall within acceptable minimum and maximum duration
Cap interviews per day per interviewer and detect time overlaps