• 
• 48%
• Created over 31 days

We counted 934 reviews for this product over the span of 627 days, an average of 1.5 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 7 or fewer reviews on any given day.

However, we see the following 31 days exceeding this threshold:

• 39 Reviews on Jul 8, 2020 (Avg. rating: 5.0)
• 37 Reviews on Jul 7, 2020 (Avg. rating: 5.0)
• 27 Reviews on Jul 16, 2020 (Avg. rating: 5.0)
• 27 Reviews on Jul 6, 2020 (Avg. rating: 5.0)
• 20 Reviews on Jun 22, 2020 (Avg. rating: 5.0)
• 20 Reviews on Jun 30, 2020 (Avg. rating: 5.0)
• 16 Reviews on Jul 9, 2020 (Avg. rating: 4.9)
• 15 Reviews on Jun 23, 2020 (Avg. rating: 4.9)
• 15 Reviews on Jul 17, 2020 (Avg. rating: 4.9)
• 15 Reviews on May 19, 2020 (Avg. rating: 4.9)
• 15 Reviews on Jul 5, 2020 (Avg. rating: 4.8)
• 14 Reviews on Jun 25, 2020 (Avg. rating: 5.0)
• 12 Reviews on Mar 19, 2020 (Avg. rating: 5.0)
• 12 Reviews on Mar 20, 2020 (Avg. rating: 5.0)
• 12 Reviews on May 12, 2020 (Avg. rating: 5.0)
• 12 Reviews on Jun 14, 2020 (Avg. rating: 5.0)
• 12 Reviews on Jul 10, 2020 (Avg. rating: 5.0)
• 12 Reviews on Jul 14, 2020 (Avg. rating: 4.9)
• 12 Reviews on Jul 12, 2020 (Avg. rating: 4.9)
• 10 Reviews on Jun 19, 2020 (Avg. rating: 5.0)
• 10 Reviews on Jun 24, 2020 (Avg. rating: 5.0)
• 10 Reviews on Jul 1, 2020 (Avg. rating: 5.0)
• 10 Reviews on Jul 2, 2020 (Avg. rating: 5.0)
• 9 Reviews on Jun 15, 2020 (Avg. rating: 5.0)
• 9 Reviews on Jul 3, 2020 (Avg. rating: 5.0)
• 9 Reviews on Jun 18, 2020 (Avg. rating: 4.9)
• 9 Reviews on Jul 13, 2020 (Avg. rating: 4.8)
• 8 Reviews on Mar 10, 2020 (Avg. rating: 5.0)
• 8 Reviews on Jul 19, 2020 (Avg. rating: 5.0)
• 8 Reviews on Jun 17, 2020 (Avg. rating: 4.9)
• 8 Reviews on Apr 28, 2020 (Avg. rating: 4.9)
Show All

In total, we found that 452 reviews were created on just 31 days. The reviews on these high volume days have rated this product an average of 5.0 while reviews from other days have rated this product an average of 4.7. 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.

Read more about our Rating Trend test.

One-Hit Wonders

• 
• 2%
• have only posted one review

15 of the 934 reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 3.9 while the reviewers who have posted more than one review have rated this product an average of 4.8. 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

• 
• 36%
• have previously deleted reviews

336 of the 934 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.

Read more about our Suspicious Reviewers test.

• 
• 37%
• Used substantial repetitive phrases

343 of the 934 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.9 while reviews without substantial repetitive phrases rated this product an average of 4.8. 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.

Read more about our Phrase Repetition test.

• 
• 73%
• Substantial overlapping review history

683 of the 934 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 5.0 while the reviewers who have a more unique product review history rated this product an average of 4.4. 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.

Read more about our Overlapping Review History test.

• 
• 64%
• 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:

• Reviewers with 6-15 Reviews: 39.7% (Avg. rating: 4.9)
• Reviewers with 16-30 Reviews: 24.2% (Avg. rating: 4.9)

In total, we found that 597 reviewers (or 64%) are within an overrepresented participation group. These reviews have rated this product an average of 4.9, while all other reviews have rated this product an average of 4.7. 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.

Read more about our Reviewer Participation test.

• 34
• Reviews have been deleted

We discovered a total of 34 deleted Reviews for this product, with an average rating of 5. Even though deleted reviews don't affect the average rating, the fact that action was taken to delete reviews raises some red flags about the integrity of the reviews for the product as whole.

There are a few limitations to keep in mind regarding the Deleted Reviews test:

1. 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.
2. We have no information on reviews that were never published in the first place.
3. 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.

Read more about our Deleted Reviews test.

Show distribution of deleted reviews

Brand Loyalists

• 
• 4%
• Reviewed mostly products from this brand

35 of the 934 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, the discrepancy in ratings between the Brand Loyalists and non-loyalists isn't significant enough to rule out the possibility of it being due to random chance.

Read more about our Brand Repeats test.

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 4.6, while the average ease score for reviewers in this category is 4.3. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.

• 
• 4%
• Unverified Purchases

34 of the 934 total reviews for this product are unverified purchases. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

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.

• 
• 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.

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.