# FITTR ONE vs NTRL

FITTR ONE and NTRL are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

FITTR ONE ships an update every 10 days, NTRL every 9 days. The most recent releases landed on October 15, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | FITTR ONE | NTRL |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (13 ratings)](https://appshunter.io/ios/app/fittr-one/id6473716474/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 73.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 9 days** |
| Monetization | Free | — |
| Size | 271 MB | 44 MB |
| Requires iOS | 16.2 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [SQUATS](https://appshunter.io/developer/1281653475) | [Tintu Vasudevan](https://appshunter.io/developer/6787671452) |

## What reviewers say

### FITTR ONE

[App page](https://appshunter.io/ios/app/fittr-one/id6473716474)

This smart ring and app combination tracks vital health metrics like sleep, heart rate, and stress. It provides personalized expert advice to help users improve their fitness and overall well-being. The system offers detailed insights into daily health performance and long-term trends.

**Highlights:** Vital health parameter monitoring, Detailed fitness metric tracking, Personalized expert advice, Sleep stage analysis, Heart rate and SpO2 tracking, Stress and skin temperature monitoring, Women's health tracking

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- ✨ Sleek and comfortable design
- 📊 Impressive data tracking capabilities
- 💡 Clear and actionable insights
- 📱 User-friendly app interface
- 🔋 Long battery life

**What reviewers complain about**

- 🐛 Buggy activity tracking
- 🐛 Report generation fails
- 🐛 Syncing issues
- 🐛 App can be slow or stutter
- 🐛 Login issues

**Reported bugs**

- Activity report generation fails after workouts
- Activity tracking is inaccurate, especially during runs and gym workouts
- App has syncing issues, requires ring to be close to phone
- App randomly logs out
- Charging issues with the ring

**Requested features**

- Improve activity tracking accuracy
- Enhance integration with Apple Health
- Option to hide or remove unused app sections (e.g., Nutrition)
- Allow adding activities after they are completed
- Display activities in a list format (e.g., walking - 23 min)


### NTRL

[App page](https://appshunter.io/ios/app/ntrl/id6787671450)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is FITTR ONE free?

FITTR ONE is free to download, with no in-app purchases.

### Is NTRL free?

NTRL is free to download, with no in-app purchases.

### Do FITTR ONE or NTRL have ads?

Neither FITTR ONE nor NTRL shows ads.

### Which is updated more often, FITTR ONE or NTRL?

FITTR ONE ships an update every 10 days, and NTRL every 9 days. Most recently, FITTR ONE was updated on October 15, 2026 and NTRL on October 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*