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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
Warn Overall Grade
FAIL
Unverified Purchases

FAIL
Suspicious Reviewers

FAIL
Overlapping Review History

WARN
Rating Trend

WARN
Brand Repeats

WARN
Reviewer Participation

PASS
Word Count Comparison

PASS
Phrase Repetition

PASS
Reviewer Ease

PASS
Incentivized Reviews

PASS
Deleted Reviews

Most Trusted Reviews
What is this crap? [Go to full review]
Apr 8, 2015
100%
TRUST
TRUST
-
Verified Purchaser
-
Take-Back Reviewer (3 deleted Reviews; avg. rating: 5.0)
-
Critical Reviewer (avg. rating: 2.9)
Least Trusted Reviews
Currently not working on multiple Android devices that we have. [Go to full review]
Feb 21, 2015
0%
TRUST
TRUST
-
Unverified Purchaser
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Never-Verified Reviewer
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Brand Repeater (2 of 5 reviews for this brand; avg rating: 1.0)
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Overrepresented Participation (posted 5 Reviews)
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Critical Reviewer (avg. rating: 1.0)
Analysis Details
Fail
Unverified Purchases

117 of the 905 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 1.6 while the verified purchasers have rated this product an average of 3.7. 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
49 of the 905 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 1.7 while the reviewers who have written at least one verified purchase review rated this product an average of 3.6. 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
46 of the 905 reviewers have had at least one of their past reviews for another product deleted. The Take-Back Reviewers have rated this product an average of 4.2 while the reviewers who don't have any deleted reviews in their history have rated this product an average of 3.4. 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.
Single-Day Reviewers
47 of the 905 reviewers have written multiple reviews but posted all of them on a single day. The Single-Day reviewers have rated this product an average of 3.9 while all other reviewers rated this product an average of 3.4. 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.
Fail
Overlapping Review History

Reviewers of this product have ALSO reviewed the following products:
6% also reviewed:
Fire TV Stick with Voice Remote | Streaming Media... by Amazon
3% also reviewed:
SanDisk SDSQUNC-032G-GN6MA Ultra 32 GB MicroSDHC... by SanDisk
3% also reviewed:
Samsung Memory 64 GB EVO MicroSDXC UHS-I Grade 1... by Samsung
2% also reviewed:
ES File Explorer by ES Mobile
2% also reviewed:
All 4 by Channel 4 TV
2% also reviewed:
Kingston Class 4 Micro SDHC card - Parent ASIN by
2% also reviewed:
BBC iPlayer by BBC
2% also reviewed:
Amazon Fire TV by Amazon
Does not include products
from the same brand
from the same brand
139 of the 905 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 3.9 while the reviewers who have a more unique product review history rated this product an average of 3.4. 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
Rating Trend

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- 5%
- Created over 7 days
We counted 905 reviews for this product over the span of 1,675 days, an average of 0.5 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 4 or fewer reviews on any given day.
However, we see the following 7 days exceeding this threshold:In total, we found that 46 reviews were created on just 7 days. Although any days with a larger number of reviews than expected is suspicious, these reviews do not appear to have a significant impact on the overall rating.
Warn
Brand Repeats

Brand Loyalists
27 of the 905 reviewers have reviewed multiple products but half or more of their reviews are for this brand. While this is more Brand Loyalists than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Warn
Reviewer Participation

-
- 77%
- 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 697 reviewers (or 77%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass
Word Count Comparison

-
- 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

-
- 0%
- Used substantial repetitive phrases
0 of the 905 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.
Read more about our Phrase Repetition test.
Read more about our Phrase Repetition test.
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, while the average ease score for reviewers in this category is 4.4.
4.0 Product's Average Ease Score
4.4 Category's Average Ease Score
Read more about our Reviewer Ease test.
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.
-
- 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.