Free tool
Survey data quality checker
Paste open-ends. Get heuristic flags for duplicates, near-duplicates, low-effort text, mixed script, and AI-like patterns. We do not claim these flags prove a model wrote the answer. Production Maxna uses proprietary AI plus the respondent stack you cannot paste into a box.
Other platforms score the respondent. Maxna scores the respondent and the response.
Device IDs, bots, VPNs, and duplicates are necessary. They are not enough. A real device can still paste ChatGPT into every open-end. Maxna's proprietary AI grades what people type - so sample integrity is both who they are and what they say.
Respondent quality
Where most tools stop
- Device fingerprinting and environment risk
- Bots, scripts, and click farms
- VPN / proxy and geo mismatch
- Duplicates and professional respondents
Response quality
Maxna's proprietary AI layer
- AI-written and synthetic open-ends
- Low-effort and copy-paste answers
- Cross-question consistency
- Open-end scoring before the complete is paid
Runs in your browser. Nothing is uploaded. This is not Maxna production scoring.
Limits
Why a paste box is not sample integrity
This tool is an organic acquisition helper and a teaching aid. It is not the gate.
Respondent quality - device, VPN, farms, duplicates, behavior - never appears here. Response quality in production is a fused model, not a phrase list. Use the checker to sanity-scan a file. Use Maxna to stop those rows from being collected.
Want device + network + behavior + AI before they enter the survey?
That’s Maxna - respondent quality and response quality, one decision.
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