NFit is a free companion app for smart bands and fitness trackers, developed by Smart Wearable Devices (also known as Shenzhen Aido Technology Co., Ltd.). With over 100,000 downloads on Google Play and a 3.8-star rating (411 reviews), the NFit app connects your wearable device via Bluetooth to track daily activity, monitor health metrics, and deliver smart notifications — all without subscription fees.
The NFit app pairs with ID107 series smart bands and other compatible wearables from the same manufacturer. It serves as the central hub for syncing, visualizing, and analyzing health data from your fitness tracker.
How the NFit App Works
The NFit app connects to your smart band via Bluetooth Low Energy (BLE). Once paired, it continuously syncs health data — steps, distance, calories, heart rate, and sleep stages — from your wearable to your phone. Data is displayed in daily summaries, weekly overviews, and trend charts for easy tracking.
The app also acts as a notification bridge: incoming calls, SMS, and app message alerts are forwarded to your smart band. You can set smart alarms, configure sedentary reminders, control music playback, and manage health monitoring — all from a single interface.
Health & Fitness Tracking
Exercise & Activity Tracking
The NFit app tracks your daily steps, distance walked, and calories burned in real-time through your connected smart band. Set personalized exercise goals and follow your progress with daily summaries and weekly comparisons.
Sleep Monitoring
Wearing your NFit-compatible fitness tracker to bed enables detailed sleep tracking — including deep sleep, shallow sleep, and wake-up patterns. View sleep quality scores and duration trends over time to understand and improve your rest.

