Review text checks
AI Review Detector for Product and Service Reviews
Paste a product, restaurant, travel, or app review into this AI review detector. Slop or Not checks the English wording for patterns associated with LLM output and returns a probability. That answers a narrow question about the text, not whether the reviewer was paid, used the product, or told the truth. Online, the pasted text first goes to Numen's server for a hidden-character scan that runs in memory and stores nothing. The separate AI check runs on Numen's private Mac server. The iPhone, iPad, and Mac apps run both checks on-device.
Catches 99.5% of AI text at a 5% false-positive rate, scored by RAID, the public benchmark, not by us.
Paste a paragraph or a whole thesis. The iPhone and Mac apps have no word cap and no monthly word budget.
- Paste English textSchool essays, product reviews, captions, articles, and social posts up to 20,000 characters.
- ResultA probability verdict, AI score, and readability analysis.
- PrivacyChecked on Numen's private Mac server and never passed to an outside AI company. For text that stays on your device, use the app.
What it checks
What Can an AI Review Detector Tell You?
Generic praise that could describe many unrelated products or services
Repeated sentence structure across benefits, drawbacks, and conclusions
Polished explanatory language with little concrete firsthand detail
Good Uses
- Triaging review text that needs a closer platform moderation check
- Checking a suspicious review before relying on it for a purchase
- Reviewing imported testimonials before publishing them on a product page
Limits to Know
- Short reviews provide little language evidence and can be hard to classify
- Templates, translation, and editorial cleanup can make human reviews look unusually regular
- The detector does not evaluate timing clusters, reviewer history, incentives, or factual accuracy
FAQ
AI Review Detector Questions
Does an AI review detector find fake or paid reviews?
No. It checks whether the English wording resembles AI-generated text. A human can write a fake review, and a real customer can use AI to edit an honest one. Payment, deception, and factual accuracy require separate evidence.
What writing patterns deserve a closer look?
Generic praise, repeated structure, and missing firsthand detail can justify a closer read. None of those clues proves AI use on its own, and a detector result remains supporting evidence.
What else should I check before trusting a review?
Look at timing clusters, the reviewer's history, disclosed incentives, purchase verification, and whether factual claims match the product. Those checks sit outside the text detector's verdict.
Does the online checker store review text?
The pasted text first goes to Numen's server for a hidden-character scan that runs in memory and stores nothing. The separate AI check runs on Numen's private Mac server. The text is not sent to third-party AI providers. The iPhone, iPad, and Mac apps run both checks on-device.
Run the Next Check on Your iPhone or Mac
The Slop or Not app checks images and text on-device, so nothing you check ever leaves your device.
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Related checks
Compare Related Detector Workflows
AI Text Detector
Check whether writing looks AI-generated with Slop or Not. Paste text online for a quick check, or use the iPhone and Mac apps on-device.
Hidden Character Detector
Free hidden character detector: scan text for invisible Unicode, smart punctuation, and lookalikes, then copy clean text; Numen never stores the passage.