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YAMAY Smart Watch for Android and iOS Phone IP68 Waterproof, Fitness Tracker Watch with Heart Rate...
More product info From YAMAY

Amazon Reviews for YAMAY Smart Watch for Android and iOS Phone IP68 Waterproof, Fitness Tracker Watch with Heart Rate Monitor Step Sleep Tracker, Smartwatch Compatible with iPhone Samsung, Watch for Men Women
Rating:
1,774 Reviews
71% of potentially unnatural reviews removed (Why?)
Adjusted:
View/Edit Adjustment
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Report Info:
Last Updated: Jan 6, 2020
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Note: While Amazon.com claims 1,774 reviews, we counted 1,777 available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".

Report Card

Fail Overall Grade
FAIL Deleted Reviews
FAIL Suspicious Reviewers
FAIL Reviewer Ease
FAIL Phrase Repetition
FAIL Overlapping Review History
WARN Rating Trend
WARN Reviewer Participation
PASS Unverified Purchases
PASS Word Count Comparison
PASS Brand Repeats
PASS Incentivized Reviews

Most Trusted Reviews

Worst charger ever. It’s virtually impossible to keep the watch ... [Go to full review]
Jan 1, 2020      
100% TRUST
  • Verified Purchaser
  • Overrepresented word count (52 words)
  • Critical Reviewer (avg. rating: 2.5)


Least Trusted Reviews

SUCH A GOOD PRODUCT!! So quality. I love the way ... [Go to full review]
Dec 12, 2019      
0% TRUST
  • Verified Purchaser
  • Created on a high volume day
  • One-Hit Wonder
  • Overlapping Review History: reviewed 1 of 9 top products
  • Overrepresented Participation (posted 1 review)
  • Easy Grader (avg. rating: 5.0)


Analysis Details

Fail Deleted Reviews

We discovered a total of 522 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 the Deleted Reviews test here.

5.0 average rating of deleted reviews

5.0


Show distribution of deleted reviews

Fail Suspicious Reviewers

One-Hit Wonders


149 of the 1,777 reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 3.7 while the reviewers who have posted more than one review have 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.

from one-hit wonders

from reviewers with more than one review


3.7
4.4


Read more about our Suspicious Reviewers test.

Fail 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 4.4, while the average ease score for reviewers in this category is 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.

4.4 Product's Average Ease Score

4.2 Category's Average Ease Score


4.4
4.2


Read more about our Reviewer Ease test.


Fail Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.

Common Phrases in Reviews:
83 reviews
(4.8/5)
110 reviews
(4.6/5)
60 reviews
(4.9/5)
80 reviews
(4.8/5)
28 reviews
(4.9/5)
19 reviews
(4.8/5)
Show MoreShow Less
Common Phrases in Titles:
70 reviews
(4.8/5)
30 reviews
(5.0/5)


84 of the 1,777 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 4.4. 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.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


4.9
4.4


Read more about our Phrase Repetition test.

Fail Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:

Does not include products
from the same brand


285 of the 1,777 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 4.3. 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.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


5.0
4.3


Read more about our Overlapping Review History test.

Warn Rating Trend

from reviews created on high volume days

from reviews created on normal volume days


4.4
4.4


Read more about our Rating Trend test.

Warn Reviewer Participation

  • 62%
  • 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 1110 reviewers (or 62%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.

From reviewers with an overrepresented participation

From reviewers with a properly represented participation


4.2
4.6


Read more about our Reviewer Participation test.

Pass Unverified Purchases

69 of the 1,777 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.

from unverified purchasers

from verified purchases


4.3
4.4


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.

Pass Word Count Comparison

  • 20%
  • Have an overrepresented word count

In the graph above, we can see the distribution of review word counts for this product and the expected distribution for this category. We see the following 1 group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 360 reviews (or 20%) are within an overrepresented word count group. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from reviews with an overrepresented word count

from reviews with a properly represented word count


4.4
4.4


Read more about our Word Count Comparison test.

Pass Brand Repeats

Brand Repeaters

We didn't detect a substantial amount of Brand Repeaters.

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.


1 of the 1,777 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from incentivized reviews

from non-incentivized reviews


4.0
4.4


Read more about our Incentivized Reviews test, or check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.


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