
Zururu Fitness Tracker
Score: 71/100
Engerwall Fitness Tracker
Score: 75/100Rankings

The Engerwall S5-3 offers a 0.96-inch display, up to 14 days of battery life, IP68 water resistance, and a suite of health sensors across 16 sport modes. However, it lacks built-in GPS, has a modest resolution screen, and sleep tracking accuracy is questionable. Best suited for budget-conscious beginners who need basic activity and health monitoring.

The ZURURU Y39 offers a lightweight 25 g design, 5-ATM waterproofing and continuous heart-rate and blood-pressure monitoring, making it a solid budget tracker. Its small 0.96-inch screen and lack of built-in GPS are notable compromises. Best suited for casual users who prioritize affordability, basic health metrics and water resistance over advanced navigation or large displays.
| Attribute | ![]() | ![]() |
|---|---|---|
156 hours | 252 hoursbest | |
| ↓ lower better | 25 gbest | 51 g |
0.96 inchesbest | 0.96 inchesbest | |
| ↓ lower better | 2 hoursbest | 2 hoursbest |
— | 1 yearsbest | |
11 modes | 16 modesbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Battery & Power(1) | ||
Battery Life (hours) | 156 hours | 252 hours |
Features(1) | ||
Sports Modes (modes) | 11 modes | 16 modes |
Build & Design(2) | ||
Weight (g) | 25 g | 51 g |
Water Resistance (IP Rating) | 5 ATM | IP68 |
Connectivity(1) | ||
GPS | false | true |

Products in the top-left offer the best value (high score, low price).

Professional reviewers commend the Y39 for its attractive look, low price, and comprehensive health and activity tracking, while noting the limited depth of editorial coverage and the small display as drawbacks.
Everyday users consistently praise the Y39's design, accurate tracking, long battery life, waterproof rating, and standalone functionality, with the most common criticism being the cramped 0.96-inch screen.


Professional reviewers consider the Engerwall S5-3 a solid entry-level tracker, emphasizing its long battery, IP68 waterproof rating, and reliable step/heart-rate monitoring while noting the lack of built-in GPS, limited sleep accuracy, and modest display as trade-offs for its low price.
Everyday users generally like the lightweight feel, long battery life, and basic health metrics, but they repeatedly criticize the sleep and calorie tracking accuracy and occasional app sync problems.