Fever Flash Thermometer - up&up™: Oral, Under Arm Application, Battery Level Indicator, Plastic Construction
$5.79
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Guests are saying
This thermometer has received mixed reviews. Some guests appreciate its accuracy, ease of reading, and useful features like color-coded temperature readouts. However, many guests have reported issues with inconsistent readings, low battery life, and difficulty in operation. It may be suitable for those looking for a basic thermometer but could be unreliable for critical temperature monitoring.
Summary created by AI from text of reviews reflecting recent feedback provided across different star ratings (includes incentivized reviews)
3.4 out of 5 stars with 556 reviews
quality: 1.59 out of 5
value: 1.7 out of 5
38% would recommend
197 recommendations
1 out of 5 stars
Thumbs down graphic, would not recommend
2 April, 2026Verified purchase
DO NOT BUY
Bought 2 just to make sure I had a backup one. batteries come almost dead so you'll only get to use them a few time before having to throw it away.
1 out of 5 stars
Thumbs down graphic, would not recommend
31 March, 2026Verified purchase
Do not but
Doesn’t work for long and gives inaccurate readings. Bought this in January and it’s already glitching.
1 out of 5 stars
23 March, 2026Verified purchase
Broken after 3 days
Broke after 3 days
1 reply from the Product Manufacturer team - 9 days ago
Hi Pilatesmom1026, thank you for your feedback. We understand how disappointing it is when a product stops working after only a few days. Your input helps us continue improving our products. Please feel free to reach out to Target Guest Services at guest.service@target.com for further assistance.
1 out of 5 stars
Thumbs down graphic, would not recommend
21 March, 2026
(no review title)
Horribly inaccurate. I took my temperature four times in four minutes and got wildly different results, repeatedly over a couple days. When I knew I had a very high fever, I needed to know the temperature so I could decide if I needed to go to Urgent Care or straight to the ER. I needed an accurate temperature and this thing is a COMPLETE FAILURE.
1 reply from the Product Manufacturer team - 11 days ago
Thank you for taking the time to share your feedback regarding the temperature readings from our thermometer. We sincerely apologize for any inconvenience this issue has caused you. We value your feedback and are committed to resolving this concern promptly. In order to address the temperature inaccuracy you've experienced, we recommend following these troubleshooting steps to ensure accurate readings: Multiple Readings: When using the thermometer, it's important to take multiple readings. Wait for the 'Beep': Ensure that you wait for the thermometer to produce a consistent beep before noting the temperature. This beep indicates that the thermometer has stabilized and the reading is accurate. For further assistance, please don’t hesitate to reach out to Target Guest Services at guest.service@target.com
1 out of 5 stars
Thumbs down graphic, would not recommend
20 March, 2026
Do Not Buy
Does not read accurately. Always jumps from 98.2 to 100.2. Reads high.
1 reply from the Product Manufacturer team - 10 days ago
Thank you for taking the time to share your feedback regarding the temperature readings from our thermometer. We sincerely apologize for any inconvenience this issue has caused you. We value your feedback and are committed to resolving this concern promptly. In order to address the temperature inaccuracy you've experienced, we recommend following these troubleshooting steps to ensure accurate readings: Multiple Readings: When using the thermometer, it's important to take multiple readings. Wait for the 'Beep': Ensure that you wait for the thermometer to produce a consistent beep before noting the temperature. This beep indicates that the thermometer has stabilized and the reading is accurate. For further assistance, please don’t hesitate to reach out to Target Guest Services at guest.service@target.com
1 out of 5 stars
Thumbs down graphic, would not recommend
15 March, 2026Verified purchase
Battery Almost Dead and Inaccurate Defaults to 97.7
Battery almost dead on arrival and inaccurate. It defaults to 97.7 and temp always 99.6
1 reply from the Product Manufacturer team - 18 days ago
Thank you for taking the time to share your feedback regarding the temperature readings from our thermometer. We sincerely apologize for any inconvenience this issue has caused you. We value your feedback and are committed to resolving this concern promptly. In order to address the temperature inaccuracy you've experienced, we recommend following these troubleshooting steps to ensure accurate readings: Multiple Readings: When using the thermometer, it's important to take multiple readings. Wait for the 'Beep': Ensure that you wait for the thermometer to produce a consistent beep before noting the temperature. This beep indicates that the thermometer has stabilized and the reading is accurate. For further assistance, please don’t hesitate to reach out to Target Guest Services at guest.service@target.com
1 out of 5 stars
14 March, 2026
(no review title)
battery was lo and its brand new
1 out of 5 stars
6 March, 2026
(no review title)
Very inaccurate
1 reply from the Product Manufacturer team - 25 days ago
Thank you for taking the time to share your feedback regarding the temperature readings from our thermometer. We sincerely apologize for any inconvenience this issue has caused you. We value your feedback and are committed to resolving this concern promptly. In order to address the temperature inaccuracy you've experienced, we recommend following these troubleshooting steps to ensure accurate readings: Multiple Readings: When using the thermometer, it's important to take multiple readings. Wait for the 'Beep': Ensure that you wait for the thermometer to produce a consistent beep before noting the temperature. This beep indicates that the thermometer has stabilized and the reading is accurate. For further assistance, please don’t hesitate to reach out to Target Guest Services at guest.service@target.com
1 out of 5 stars
Thumbs down graphic, would not recommend
5 March, 2026
(no review title)
DO NOT BUY. Gives inaccurate readings, constantly reading much higher
1 reply from the Product Manufacturer team - 29 days ago
Thank you for taking the time to share your feedback regarding the temperature readings from our thermometer. We sincerely apologize for any inconvenience this issue has caused you. We value your feedback and are committed to resolving this concern promptly. In order to address the temperature inaccuracy you've experienced, we recommend following these troubleshooting steps to ensure accurate readings: Multiple Readings: When using the thermometer, it's important to take multiple readings. Wait for the 'Beep': Ensure that you wait for the thermometer to produce a consistent beep before noting the temperature. This beep indicates that the thermometer has stabilized and the reading is accurate. For further assistance, please don’t hesitate to reach out to Target Guest Services at guest.service@target.com
1 out of 5 stars
4 March, 2026Verified purchase
(no review title)
Don’t not recommend
1 reply from the Product Manufacturer team - 29 days ago
Thank you for taking the time to share your feedback regarding the temperature readings from our thermometer. We sincerely apologize for any inconvenience this issue has caused you. We value your feedback and are committed to resolving this concern promptly. In order to address the temperature inaccuracy you've experienced, we recommend following these troubleshooting steps to ensure accurate readings: Multiple Readings: When using the thermometer, it's important to take multiple readings. Wait for the 'Beep': Ensure that you wait for the thermometer to produce a consistent beep before noting the temperature. This beep indicates that the thermometer has stabilized and the reading is accurate. For further assistance, please don’t hesitate to reach out to Target Guest Services at guest.service@target.com
1 out of 5 stars
Thumbs down graphic, would not recommend
23 February, 2026
Do not buy
Battery was dead when I purchased and didn’t work. Very Poor quality
1 reply from the Product Manufacturer team - 1 month ago
Thank you for taking the time to share your feedback regarding the temperature readings from our thermometer. We sincerely apologize for any inconvenience this issue has caused you. We value your feedback and are committed to resolving this concern promptly. In order to address the temperature inaccuracy you've experienced, we recommend following these troubleshooting steps to ensure accurate readings: Multiple Readings: When using the thermometer, it's important to take multiple readings. Wait for the 'Beep': Ensure that you wait for the thermometer to produce a consistent beep before noting the temperature. This beep indicates that the thermometer has stabilized and the reading is accurate. For further assistance, please don’t hesitate to reach out to Target Guest Services at guest.service@target.com
1 out of 5 stars
21 February, 2026
Do not buy
Does not work. All it’s says on each reading is “HI” no number ever.
1 reply from the Product Manufacturer team - 1 month ago
Hi CW13, I’m sorry to hear your up&up Fever Flash Thermometer only displays “HI” and never gives a reading. That’s definitely concerning and not the experience you should have. We appreciate you sharing this feedback so we can look into it and continue improving our products. Please feel free to reach out to Target Guest Services at guest.service@target.com for further assistance.
1 out of 5 stars
Thumbs down graphic, would not recommend
18 February, 2026Verified purchase
Absolute Garbage
unless you want a guaranteed sick day excuse - don't bother with this thermometer. It consistently read my temp at 101. I finally decided to buy a different brand to compare, and my actual read was 98.
1 reply from the Product Manufacturer team - 1 month ago
Thank you for taking the time to share your feedback regarding the temperature readings from our thermometer. We sincerely apologize for any inconvenience this issue has caused you. We value your feedback and are committed to resolving this concern promptly. In order to address the temperature inaccuracy you've experienced, we recommend following these troubleshooting steps to ensure accurate readings: Multiple Readings: When using the thermometer, it's important to take multiple readings. Wait for the 'Beep': Ensure that you wait for the thermometer to produce a consistent beep before noting the temperature. This beep indicates that the thermometer has stabilized and the reading is accurate. For further assistance, please don’t hesitate to reach out to Target Guest Services at guest.service@target.com
1 out of 5 stars
Thumbs down graphic, would not recommend
12 February, 2026
Wildly inaccurate
Unfortunately, the price is too good to be true. The screen is helpful and turns green if your fever is below 100, and red if it's above, which is helpful for people with vision issues. The problem is, it will give you wildly different temperature readings, even when place in it in the same place consecutively. I took my temperature once and it said it was 97 (which I knew to not be true, my forehead was burning up), I took it again not thirty seconds later, placing it in the same place in my mouth, and it said I was 104. Don't waste your money on this scam product. Positives: - Price Point - Flexible tip made it easier to bit down/keep in mouth Negative - Inaccurate readings (~7 degrees difference within a span of thirty seconds)
1 reply from the Product Manufacturer team - 2 months ago
Thank you for taking the time to share your feedback regarding the temperature readings from our thermometer. We sincerely apologize for any inconvenience this issue has caused you. We value your feedback and are committed to resolving this concern promptly. In order to address the temperature inaccuracy you've experienced, we recommend following these troubleshooting steps to ensure accurate readings: Multiple Readings: When using the thermometer, it's important to take multiple readings. Wait for the 'Beep': Ensure that you wait for the thermometer to produce a consistent beep before noting the temperature. This beep indicates that the thermometer has stabilized and the reading is accurate. For further assistance, please don’t hesitate to reach out to Target Guest Services at guest.service@target.com
1 out of 5 stars
Thumbs down graphic, would not recommend
8 February, 2026Verified purchase
oops. they don't make em like they used to.
instructions unclear. I removed too much. to be fair, they don't make em like they used to. don't make my mistake.
1 reply from the Product Manufacturer team - 2 months ago
Hello, thank you for your honest feedback. We appreciate you sharing your experience and the heads-up for others, especially around the instructions. Feedback like yours helps us continue to improve our products. Please feel free to reach out to Target Guest Services at guest.service@target.com for further assistance.
1 out of 5 stars
4 February, 2026Verified purchase
(no review title)
Thermometer is not accurate. On one side of my mouth I have a fever, and on the other side I am fine. Low battery life as well. I recommend paying the extra $3-4 for the Vicks brand
1 reply from the Product Manufacturer team - 2 months ago
Hi Diana, Thank you for taking the time to share your feedback regarding the temperature readings from our thermometer. We sincerely apologize for any inconvenience this issue has caused you. We value your feedback and are committed to resolving this concern promptly. In order to address the temperature inaccuracy you have experienced, we recommend following these troubleshooting steps to ensure accurate readings: Multiple Readings: When using the thermometer, it's important to take multiple readings. Wait for the beep;: Ensure that you wait for the thermometer to produce a consistent beep before noting the temperature. This beep indicates that the thermometer has stabilized and the reading is accurate. For further assistance, please don’t hesitate to reach out to Target Guest Services at guest.service@target.com
1 out of 5 stars
Thumbs down graphic, would not recommend
3 February, 2026Verified purchase
Wildly inaccurate
This thermometer is useless. I’ll check my temp once and it’ll say 101.3 immediately check it again because that seems high and it’ll say that I am a 97.6 that’s a pretty big discrepancy, especially if you’re trying to gauge your symptoms this thermometer is going in the trash. What a waste of money.
1 reply from the Product Manufacturer team - 2 months ago
Thank you for taking the time to share your feedback regarding the temperature readings from our thermometer. We sincerely apologize for any inconvenience this issue has caused you. We value your feedback and are committed to resolving this concern promptly. In order to address the temperature inaccuracy you've experienced, we recommend following these troubleshooting steps to ensure accurate readings: Multiple Readings: When using the thermometer, it's important to take multiple readings. Wait for the 'Beep': Ensure that you wait for the thermometer to produce a consistent beep before noting the temperature. This beep indicates that the thermometer has stabilized and the reading is accurate. For further assistance, please don’t hesitate to reach out to Target Guest Services at guest.service@target.com
1 out of 5 stars
Thumbs down graphic, would not recommend
2 February, 2026
(no review title)
inaccurate
1 reply from the Product Manufacturer team - 2 months ago
Thank you for taking the time to share your feedback regarding the temperature readings from our thermometer. We sincerely apologize for any inconvenience this issue has caused you. We value your feedback and are committed to resolving this concern promptly. In order to address the temperature inaccuracy you've experienced, we recommend following these troubleshooting steps to ensure accurate readings: Multiple Readings: When using the thermometer, it's important to take multiple readings. Wait for the 'Beep': Ensure that you wait for the thermometer to produce a consistent beep before noting the temperature. This beep indicates that the thermometer has stabilized and the reading is accurate. For further assistance, please don’t hesitate to reach out to Target Guest Services at guest.service@target.com
1 out of 5 stars
31 January, 2026Verified purchase
(no review title)
Inaccurate, results vary wildly even with proper use
1 reply from the Product Manufacturer team - 2 months ago
Hi Joe, thank you for taking the time to share your feedback regarding the temperature readings from our thermometer. We sincerely apologize for any inconvenience this issue has caused you. We value your feedback and are committed to resolving this concern promptly. In order to address the temperature inaccuracy you've experienced, we recommend following these troubleshooting steps to ensure accurate readings: Multiple Readings: When using the thermometer important to take multiple readings. Wait for the Beep: Ensure that you wait for the thermometer to produce a consistent beep before noting the temperature. This beep indicates that the thermometer has stabilized and the reading is accurate. For further assistance, please don’t hesitate to reach out to Target Guest Services at guest.service@target.com
1 out of 5 stars
Thumbs down graphic, would not recommend
24 January, 2026Verified purchase
(no review title)
Inaccurate and inconsistent readings! Deserves a zero!
1 reply from the Product Manufacturer team - 2 months ago
Hello, thank you for your feedback. We’re sorry to hear the thermometer was inconsistent and understand how frustrating that can be. Your input is appreciated and helps highlight where the product fell short. Please feel free to reach out to Target Guest Services at guest.service@target.com for further assistance.