FITTR ONE

FITTR ONE

The Smarter Fitness Solution

13 ratings
68 reviews
Free

Details

Released
February 8, 2024
Updated
November 11, 2026

Features

Background Location Access

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About

This smart ring and companion app monitor vital health parameters like heart rate, sleep, and stress. It provides detailed health data and expert advice to help users improve their fitness and well-being. The platform is backed by a large online fitness community.

✓Vital health parameter monitoring
✓Detailed fitness metric tracking
✓Expert advice for improvement
✓Sleep stage analysis
✓Heart rate and SpO2 tracking
✓Stress and skin temperature monitoring
✓Women's health tracking
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What users say about FITTR ONE

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+1

What's New in FITTR ONE

2.3.7

November 11, 2026

We keep updating our app to provide you with a seamless experience. This update contains bug fixes.

User reviews

App can improve

I have been having so many connection issues. Tried repairing the ring. Same issues. What’s the point of having a premium fitness ring if it can’t even connect properly.

Update: The support was excellent. They responded within a day and resolved my issue. Highly recommended product!!!

Horrible connectivity issues

I have been having so many connection issues. Tried repairing the ring. Same issues. What’s the point of having a premium fitness ring if it can’t even connect properly.

Great Concept, Poor execution

I had high expectations from the HART Ring, but unfortunately my experience has been disappointing.

From the beginning, I have faced frequent sync issues, charging problems, battery drain, and an unstable app experience. The app often requires me to force close and reopen it just to sync with the ring. That’s not a solution—it should simply work.

Battery life has deteriorated significantly. Initially, the ring lasted around 6–8 days, but now I have to charge it almost every day. The charging case is also unreliable, and I often have to place the ring back multiple times and repeatedly open and close the lid before it starts charging.

The ring was even replaced once under warranty, but the replacement developed similar issues. I’m still following up with customer support, yet there has been no satisfactory resolution.

A health wearable should provide a seamless, reliable experience and peace of mind. Instead, I’ve spent more time troubleshooting than actually using the product.

I hope HART improves both the hardware and software experience because, in its current state, I cannot recommend it.
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Consistent performer, Highly recommend

I’ve been using this ring since March, and it’s been a fantastic experience so far. The heart rate tracking is accurate and consistent, and I haven’t run into a single glitch or issue in the five months I’ve worn it daily. Battery life has held up well, and it’s comfortable enough that I forget I’m wearing it.

What I appreciate most is the reliability-no random disconnects, no syncing issues, just consistent performance day after day. It’s become a seamless part of my routine for tracking my health.

Highly recommend if you’re looking for a dependable fitness ring that just works.
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After sales service good. Product not satisfactory.

The 3 star is given for the after sales service. Its been 1 year since is purchased hart ring. And have already had replacements twice within a year due to malfunctioning on ring. And this 3rd ring is also not running properly. Don’t know the ring hardware is not good or the app is not supporting it. But , not satisfied at all.
HR data not consistent, hrv data not consistent, sleep data started malfunctioning. Not sleeping reads as sleep. And sleep peacefully reads as awake.
Activity reading is also not consistent. And the worst part is no conclusion/solution regarding the problem .

But service is always ready to help and solve the problem. So 3 star to Hart ring is only because of that. Product 0 star.
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Developer apps

User experience

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Reported Bugs

10 issues

Activity report generation fails after workouts

Bug

Activity tracking is inaccurate, especially during runs and gym workouts

Bug

App has syncing issues, requires ring to be close to phone

Bug

App randomly logs out

Bug

Charging issues with the ring

Bug

Battery life drastically reduced after firmware updates

Bug

Sleep tracking not working consistently or accurately

Bug

Login issues

Bug

Report generation fails for activities like Badminton or Weight training

Bug

App shutters and shudders on iPhone 15

Bug
✨

Requested Features

7 requests

Improve activity tracking accuracy

Feature

Enhance integration with Apple Health

Feature

Option to hide or remove unused app sections (e.g., Nutrition)

Feature

Allow adding activities after they are completed

Feature

Display activities in a list format (e.g., walking - 23 min)

Feature

More explanation on stress management

Feature

Push notification for low battery (<20%)

Feature

FAQ

What health metrics does FITTR ONE track?

FITTR ONE tracks a wide range of metrics including Steps, Distance, Calories, Sleep Duration and Stages, HRV, Skin Temperature, SpO2, Heart Rate, Stress, and Women's Health parameters. It provides detailed graphs and reports for each.

How accurate is FITTR ONE's activity tracking?

User reviews indicate that while the app offers impressive data tracking capabilities, there are some concerns about the reliability of activity tracking, particularly for gym workouts and lifting. Some users have reported buggy activity tracking.

Does FITTR ONE require a subscription?

No, FITTR ONE is available for free and does not require a subscription. Users appreciate the good value for money provided by the app and its associated hardware.

What are the common issues users experience with FITTR ONE?

Common user complaints include syncing issues, app slowness or stuttering, report generation failures, and occasional login or log-out problems. Some users have also noted battery drain after updates and charging issues with the ring.

Is FITTR ONE a medical device?

No, FITTR ONE is explicitly stated as not being a medical device. It should not be used as a substitute for professional medical judgment or for diagnosing, treating, or preventing any disease.

How do I ensure accurate readings from my FITTR HART Ring?

For best performance, wear the HART Ring securely and comfortably on the index finger of your non-dominant hand, with the sensor facing the palm side of your finger. Middle and ring fingers are also acceptable if preferred.

What is the overall user sentiment for FITTR ONE?

User sentiment for FITTR ONE is mixed. While users praise its sleek design, comprehensive data tracking, and user-friendly interface, there are significant concerns regarding app performance, reliability, and occasional technical issues.

What devices does FITTR ONE support?

FITTR ONE currently supports iPhone devices. Compatibility with other platforms may be limited, as some users have noted a need for better integration with other health platforms.