How does RateBud detect fake Amazon reviews?

RateBud uses advanced AI to analyze review patterns, language authenticity, timing anomalies, and content quality. We examine reviewer behavior, review velocity, and linguistic markers to detect fake reviews with high accuracy.

What does the trust score mean?

The trust score is a percentage from 0-100% indicating review authenticity. This product scored 92% (Grade A). Scores above 80% indicate highly trustworthy reviews, 60-79% are generally reliable, and below 60% suggest caution.

Is RateBud's review analysis free?

Yes, RateBud's AI-powered review analysis is completely free. We analyze Amazon reviews to help you avoid fake reviews and make informed purchasing decisions. No signup required.

Product image of FNIRSI USB Tester 4-28V 7A LCD USB A&C Voltage Current Power Tester Multimeter with App Software, Fast Charge Detection Trigger Capacity Ripple Measurement, PD2.0/PD3.0,QC2.0/QC3.0

FNIRSI USB Tester 4-28V 7A LCD USB A&C Voltage Current Power Tester Multimeter with App Software, Fast Charge Detection Trigger Capacity Ripple Measurement, PD2.0/PD3.0,QC2.0/QC3.0

Name: FNIRSI USB Tester 4-28V 7A LCD USB A&C Voltage Current Power Tester Multimeter with App Software, Fast Charge Detection Trigger Capacity Ripple Measurement, PD2.0/PD3.0,QC2.0/QC3.0
Brand: FNIRSI
SKU: B0BJ253W31
Price: 45.59 USD
Availability: InStock
Rating: 4.5 (415 reviews)

4.5(415 reviews)

AI-powered analysis of this product's reviews to help you make an informed purchase decision.

Last analyzed: January 17, 2026

0%🟢

Excellent

Trust Score

How trustworthy are the reviews for this product?

✓ Reviews appear trustworthy

Analysis Summary

Based on the analysis, the FNIRSI USB Tester has received overwhelmingly positive reviews from credible sources, scoring 92 out of 100. Reviewers praised its high-quality content, consistent performance, and advanced features such as fast charge detection and ripple measurement. However, the seller's reputation could be improved, scoring 78 out of 100, which might be a concern for some consumers.

Review Timeline

Review patterns over time - spikes may indicate manipulation

93%

Velocity Score

Spikes

None found

Peak

Reviews/mo

Timeline

Months

Pattern Analysis

Good: Review pattern appears natural with steady growth. No suspicious spikes that might indicate review manipulation.

Keyword Analysis

Common phrases and their authenticity patterns

89%

Authenticity

life saver(5)well-designed product(8)

Positive

Natural phrases

Critical

Genuine concerns

Suspicious

Generic phrases

Language Authenticity

Vocabulary Diversity100%

Natural Language Flow92%

Unique Phrasing96%

Good: Language patterns appear natural with good diversity. Reviews use varied vocabulary and authentic expressions.

Recommendation

✅ Recommended

Analysis Date

January 17, 2026

Total Reviews

415 reviews analyzed

Understanding This Trust Score

FNIRSI USB Tester 4-28V 7A LCD USB A&C Voltage Current Power... received a Grade A with a trust score of 92/100. This product has earned our highest trust rating. The review patterns show authentic customer feedback with natural language variation, consistent timing, and verified purchases. You can shop with confidence.

What This Means:

•Reviews show natural language diversity
•No suspicious timing patterns detected
•High percentage of verified purchases
•Review velocity matches expected sales patterns

What Reviewers Are Saying

Based on our analysis of customer reviews for FNIRSI USB Tester 4-28V 7A LCD USB A&C Voltage Cur..., here are the most common themes and opinions shared by verified buyers:

✓ Commonly Praised:

life saver (5x)well-designed product (8x)

Overall sentiment: Based on the analysis, the FNIRSI USB Tester has received overwhelmingly positive reviews from credible sources, scoring 92 out of 100. Reviewers praised its high-quality content, consistent performance, and advanced features such as fast charge detection and ripple measurement. However, the seller's reputation could be improved, scoring 78 out of 100, which might be a concern for some consumers.

Frequently Asked Questions

Are the reviews for FNIRSI USB Tester 4-28V 7A LCD USB A&C V... real?

▼

Based on our AI analysis, approximately 92% of reviews appear authentic, while 8% show patterns consistent with potentially fake or incentivized reviews. Overall, you can trust most reviews for this product.

How does RateBud detect fake reviews?

▼

Our AI analyzes multiple factors including review timing patterns, language similarity, reviewer history, and purchase verification. For this product, we analyzed 415 reviews to calculate the trust score.

Should I buy FNIRSI USB Tester 4-28V 7A LCD USB A&C V...?

▼

Based on our analysis, this product has trustworthy reviews and appears to be a safe purchase. The A grade indicates excellent review authenticity.

Shopping Tips for [object Object]

This product has 415 reviews with a Grade A trust score. Here's what to keep in mind:

💡Always prioritize verified purchase reviews over unverified ones
💡Look for detailed reviews that mention specific pros and cons
💡Be cautious of products with sudden spikes in positive reviews

Ready to make your purchase?

Based on our analysis, you can make an informed decision. Click below to purchase this product on Amazon.

✨ Premium Quality Product

As an Amazon Associate I earn from qualifying purchases

Grade AFNIRSI USB Tester 4-28V 7A LCD USB A&C Voltage Current Power Tester Multimeter with App Software, Fast Charge Detection Trigger Capacity Ripple Measurement, PD2.0/PD3.0,QC2.0/QC3.0