Smarten IF2121A Smart Body Fat Scale: Weight unit: kg/lb/st (switch the units in the App and the scale will sync the units)
For parents tracking a child's growth or anyone managing family health, the Smarten IF2121A Smart Body Fat Scale goes beyond simple weight checks. It becomes a shared wellness tool, helping you monitor progress together without daily pressure.
The scale syncs seamlessly with its app, allowing unlimited accounts so everyone in your household can track their data privately. A specific detail: the baby mode lets you weigh an infant by holding them, subtracting your weight automatically for an accurate reading. Features like height recording for kids under 16 and offline measurements after the first use make it practical for busy homes. You get body fat, BMI, and more insights without needing your phone every time, supported by clear troubleshooting for common issues like Bluetooth connections.
Compatible with iOS and Android, it uses AAA batteries and includes tips for battery care. This scale offers a straightforward way to support health goals, from tracking a teen's development to keeping an eye on overall fitness.
Features
- Weight Limit: 13.2lb – 400lb
- Account number: No limitation (each account can add 8 persons)
- Baby mode: Allow you to scale the weight of baby
- SUPPORT DEVICES: IOS 8.0 or Higher, Android 6.0 or Higher
- Product size: 11.8x10.8x1.0 inches
- VA screen display: 2.4x4.3 inches
- Powered by 4xAAA batteries
- Operating temperature: 50-104°F
- Operation humidity: 20%-90%
- Height record: Allow you to record the height info under 16 years old
- First time use: must be online use (otherwise, scale only shows weight & BMI)
- From second time use, support offline measurement (no need to open App for every measurement)
- TROUBLESHOOTING GUIDE includes specific steps for Bluetooth connection, no body fat data, inconsistent weight, incorrect fat-muscle ratio, recalibration, scale not turning on, and scale only showing weight & BMI
- FCC compliance: Class B digital device, part 15 of FCC Rules
- Battery Advice: Remove batteries if not used for long periods, do not mix old and new batteries, dispose separately
- Weight unit: kg/lb/st (switch the units in the App and the scale will sync the units)
General specs
- Brand: Smarten
- Model: IF2121A
- Seller: Joom
- ID: 6927e3974e824301c58382c0
- Weight Unit: lbs
- Connectivity: Smart/Bluetooth/Wi-Fi
- Data Storage: Cloud/App
- Display Type: Digital LCD/LED
- Model Number: IF2121A
- Power Source: Battery
- Product Name: Smarten IF2121A Smart Body Fat Scale
- Product Type: Smart Body Fat Scale
- Compatibility: Smartphone Apps
- User Profiles: Multiple
- Auto-Calibration: Yes
- Measurement Type: Body Fat, Weight
- Body Fat Measurement Method: Bioelectrical Impedance Analysis (BIA)
- First listed by seller: 12/6/25
If you are interested in more details, you can find full information on the seller's page.
Shipping options
United States
Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
Smarten IF2121A
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Alcedo ASS-WG1 White
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RENPHO R-A017 RGB
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Rabater CF588BLE Black
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LOFTILLA CS20M3-BLACK Black Accurate measurements up to 396 lbs
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YINOLIFE FI2428LBF Black
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|
| Brand | Smarten | Alcedo | RENPHO | Rabater | LOFTILLA | YINOLIFE |
| Model | IF2121A | ASS-WG1 | R-A017 | CF588BLE | CS20M3-BLACK | FI2428LBF |
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| Rating |
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| Price | $57.72 | $37.99 | $42.99 | $39.99 | $19.99 | $29.99 |
| Seller | Joom | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | December 16, 2025 | December 9, 2025 | December 9, 2025 | December 9, 2025 | December 9, 2025 | December 9, 2025 |
| Connectivity | Smart/Bluetooth/Wi-Fi | Bluetooth | Bluetooth | Bluetooth | Bluetooth | Bluetooth |
| Display Type | Digital LCD/LED | LED Screen | LCD | LED | LCD | |
| Power Source | Battery | Rechargeable, USB-C Charging | Rechargeable | Rechargeable | Rechargeable | |
| Dimensions | Height: 1 inch, Length: 11.81 inches, Width: 11.81 inches | 27.4, 27.4, 1.5 | 10.62 inches, 10.62 inches, 1 inches | 11.8, 11.8, 1.1 | ||
| App Compatibility | Renpho Health App, Apple Health, Google Fit, Samsung Health, Fitbit, MyFitnessPal | Apple Health, Samsung Health | Apple Health | Apple Health | ||
| Material | Tempered Glass | Tempered Glass | Tempered Glass | |||
| Item Weight | 1.2 | 2.2 Pounds | 1.8 | |||
| BIA Technology | BIA | BIA | BIA | |||
| Metrics Measured | BMI, Body Fat Percentage, Heart Rate, Muscle Mass, Water Percentage, Weight | BMI, Body Fat Percentage, Muscle Mass, Weight | BMI, Body Fat Percentage, Muscle Mass, Bone Mass, Weight | |||
| OS Compatibility | Android, iOS | Android, iOS | Android, iOS | |||
| Measurement Increments | 45.4 | 0.2 lbs | 0.045 | |||
