Letsfit vs 3+ Go
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Letsfit
Track your daily fitness and wellness with this app. It records and interprets health data like steps, sleep, and heart rate, and analyzes exercise routines with route mapping. It also acts as a notifications assistant for your connected smartwatch.
- Health data display (steps, sleep, heart rate, calories)
- Exercise data analysis with route tracking
- Smartwatch notifications assistant (calls, SMS)
- Professional data interpretations
- Synchronization with Apple Health (HealthKit)
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Letsfit cares about people's daily fitness and wellness. When you use the Letsfit app for long enough in conjunction with exercise, you will see noticeable improvements in your health. The main features: 1. Health data display: Letsfit records data relevant to your physical condition such as steps taken, sleep hours, heart rate, calories burned, while also provides you with professional interpretations over these data. 2. Exercise data analysis: Letsfit is also able to record while you exercise, and will display various data, including a detailed route and various exercise data analysis afterwards. 3. Notifications assistant: Letsfit pushes CALL、SMS and other app notifications to the connected smartwatch, you can mute, answer, or hang up on the connected device while receiving an incoming call. We will keep updating the app to support more devices, with more reliability and exciting features. Please note: screenshots shown represent features supported but devices might not have all the features listed. Connect to synchronize data to Apple Health (HealthKit), to achieve data movement, data and consumed calories sleep simultaneous recording to Apple Health (HealthKit).
3+ Go
Track your daily activity, including steps, distance, and calories. Set personalized fitness goals and monitor your heart rate. Receive smart notifications and check the weather directly on your device.
- Activity tracking (steps, distance, calories)
- Personalized goal setting
- Heart rate monitoring
- Smart notifications
- Weather updates
- HealthKit synchronization
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Overview Activity Tracking: Monitor your daily steps taken, distance traveled, calories burned and more. Personal Goal Setting: Set personalized step, calorie, distance, active minutes and sleep goals based on your activity level to reach your target fitness level. Health information can be synchronized to Health Kit. Smart Features Heart Rate Monitor: Maintain your heart rate level during workouts or measure your resting heart rate to see how your fitness level has improved over time. Smart Notifications: Receive and read a variety of notifications all on the watch. Weather App: Check today’s weather . Health information can be synchronized to HealthKit.
Screenshots
Verdict
Letsfit and 3+ Go both sit at 4.2 stars, but that hides the real split: 50% of 3+ Go's written reviews are positive against 25% of Letsfit's. Letsfit's advantage is ratings volume (6.3K vs 97). On price, rating, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.2 for Letsfit against 4.2 for 3+ Go. That said, the two scores are not equally well evidenced: Letsfit has 6.3K ratings behind it against 97, so its average is the more settled of the two. Written reviews are what separate them: 25% of Letsfit's written reviews are positive against 50% of 3+ Go's.
Letsfit ships an update every 5 weeks, 3+ Go every 2 months. The most recent releases landed on October 23, 2026 and October 20, 2026 respectively.
| Parameter | Letsfit | 3+ Go |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (6.3K ratings) — better | 4.2 (97 ratings) |
| Positive reviews | 25.4% of reviews | 50.0% of reviews — better |
| Number of ratings | 6.3K — better | 97 |
| Update frequency | Every 5 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 134 MB | 170 MB |
| Age rating | 4+ | 4+ |
| Developer | Letsfit LLC | 3Plus International |
Customer experience
Letsfit
3+ Go
Bugs and requests
Letsfit
Reported bugs
4 issues- Watch time not updating correctly
- App fails to sync data consistently
- Inability to change watch faces
- Disconnection issues between watch and phone
Requested features
5 requests- Add more workout modes
- Allow editing of activity data
- Improve notification handling
- Provide map tracking for activities
- Add blood pressure monitoring
3+ Go
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Letsfit
No in-app purchases
3+ Go
No in-app purchases









