I love my Oura Ring, but this subscription-free sleep tracker gives it a run for its money — and its under $70 for Prime Day

5 hours ago 2

(Image credit: Amazon)

If you're in the market for a reliable sleep tracking ring, but don't have the budget to splash out on the likes of Oura, the Amazon Prime Day sale is a great place to shop for more affordable alternatives, such as this FKGZJF Smart Ring available for just $69.98 at Amazon now.

You can get many sleep gadgets at Amazon from the best budget mattresses to the best sunrise alarm clocks. Now, their sleep tracker offering is picking up too. Tracking my ZZZs keeps me accountable when it comes to sticking to a consistent sleep schedule and maintaining healthy habits that promote good rest.

I've been shopping the early Amazon Prime Day sleep sales all morning and the FKGZJF deal is my top pick so far. As a full time sleep tech tester, here's why I recommend shopping this sleep tracking ring now...

Is this a good sleep tracker?

As a budget smart ring, there's no avoiding the fact the FKGXJF smart ring is basic. It doesn't have the bells and whistles of advanced sleep trackers like Oura, Samsung and Ultrahuman, which can track your sleep efficiency and restfulness.

But it does its basic job well. It records your falling asleep time, wake up time and sleep quality (how long you spend in each sleep stage) and collates this data in graphs to give an indication of how restorative your sleep has been. You can view daily, weekly and monthly sleep data in the compatible app to track how your habits impacts impact your sleep health.

Just one customer reports trouble with the sleep tracking. She says: "Multiple times this week it has shown I slept for 38 minutes, which is completely false." Since the majority of customers sing its praises as a sleep tracker, I assume this was a one-off faulty product.

In a review published on 24 June 2025, a customer writes: "This has been a game changer for my sleep." Another says the "sleep tracking is excellent" and "I like it better than my smart watch especially to sleep."

Want the real deal?

Read more: Don’t waste your money on the Oura Ring 4 — the older model tracks sleep just as well and is $150 cheaper

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Eve is a PPA-accredited journalist with an MA in Magazine Journalism from Cardiff University. She is a Sleep Staff Writer at Tom’s Guide and has four years’ experience writing health features and news. She is particularly interested in the relationship between good sleep and overall health. At Tom’s Guide Eve is responsible for coverage and reviews of sleep tech and is our smart and cooling mattress specialist, focussing on brands such as Eight Sleep and Sleep Number. She also covers general mattress reviews, seeks out the best deals to produce tried-and-tested buyer's guides for sleep accessories and enjoys writing in-depth features about sleep health. She has been involved in rigorous testing procedures for mattress reviews in our Sleep Studio and has interviewed experts including sleep doctors and psychologists. When not covering sleep at Tom's Guide, Eve enjoys writing about health and fitness, food and culture.

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