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This report was last updated 10/7/2017.
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Report Info:
Last Updated: Oct 7, 2017
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Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Pass Overall Grade
FAIL
Unverified Purchases

FAIL
Suspicious Reviewers

FAIL
Overlapping Review History

WARN
Reviewer Participation

PASS
Rating Trend

PASS
Word Count Comparison

PASS
Phrase Repetition

PASS
Reviewer Ease

PASS
Brand Repeats

PASS
Incentivized Reviews

PASS
Deleted Reviews

Most Trusted Reviews
Works very well. haven't used it much though as reading ... [Go to full review]
Aug 1, 2015
100%
TRUST
TRUST
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Verified Purchaser
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Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
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Critical Reviewer (avg. rating: 4.1)
Least Trusted Reviews
It works great :) [Go to full review]
Nov 24, 2014
0%
TRUST
TRUST
-
Unverified Purchaser
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Never-Verified Reviewer
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Single-Day Reviewer (posted all reviews on Nov 24, 2014)
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Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
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Overlapping Review History: reviewed 1 of 9 top products
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Overrepresented Participation (posted 2 Reviews)
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Easy Grader (avg. rating: 4.5)
Analysis Details
Fail
Unverified Purchases

64 of the 1,187 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 3.5 while the verified purchasers have rated this product an average of 4.3. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.
Fail
Suspicious Reviewers

Never-Verified Reviewers
36 of the 1,187 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 3.5 while the reviewers who have written at least one verified purchase review rated this product an average of 4.3. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Take-Back Reviewers
32 of the 1,187 reviewers have had at least one of their past reviews for another product deleted. While this is more Take-Back Reviewers than we'd expect to see, the discrepancy in ratings between the Take-Back Reviewers and reviewers who don't have any deleted reviews in their history isn't significant enough to rule out the possibility of it being due to random chance.
Fail
Overlapping Review History

Reviewers of this product have ALSO reviewed the following products:
3% also reviewed:
Fire TV Stick with Voice Remote | Streaming Media... by Amazon
2% also reviewed:
Amazon.co.uk Gift Card - In a Greeting Card -... by Amazon EU S.à.r.l.
2% also reviewed:
Candy Crush Saga by King
2% also reviewed:
Kingston Class 4 Micro SDHC card - Parent ASIN by
2% also reviewed:
Samsung Memory 64 GB EVO MicroSDXC UHS-I Grade 1... by Samsung
2% also reviewed:
Amazon.co.uk eGift Voucher (Various Designs) by Amazon EU S.à.r.l.
1% also reviewed:
Fifty Shades of Grey: The #1 Sunday Times... by E L James
Does not include products
from the same brand
from the same brand
169 of the 1,187 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.5 while the reviewers who have a more unique product review history rated this product an average of 4.2. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Warn
Reviewer Participation

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- 83%
- From reviewers with an overrepresented participation
We see the following 2 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 986 reviewers (or 83%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass
Rating Trend

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- 2%
- Created over 3 days
We counted 1,187 reviews for this product over the span of 1,690 days, an average of 0.7 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 5 or fewer reviews on any given day.
However, we see the following 3 days exceeding this threshold:In total, we found that 19 reviews were created on just 3 days. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass
Word Count Comparison

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- 0%
- Have an overrepresented word count
We didn't find any review word count groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Word Count Comparison test.
Read more about our Word Count Comparison test.
Pass
Phrase Repetition

Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
Common Phrases in Titles:
32 reviews
2 of the 1,187 total reviews for this product use substantial repetitive phrases between them. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass
Reviewer Ease

The ease score is the average rating for all reviews that a given reviewer submits. The average ease score for reviewers of this product is 4.3, while the average ease score for reviewers in this category is 4.4.
4.3 Product's Average Ease Score
4.4 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass
Brand Repeats

Brand Repeaters
107 of the 1,187 reviewers have reviewed other products for this brand. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass
Incentivized Reviews

On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
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- 0%
- Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Pass
Deleted Reviews

- 0
- Reviews have been deleted
We have not discovered any deleted reviews for this product.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
There are a few limitations to keep in mind regarding the Deleted Reviews test:
- We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
- We have no information on reviews that were never published in the first place.
- We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.