Trainer’s Stopwatch is an essential app for coaches and athletes seeking precision and efficiency in monitoring performance during running sessions. Designed to meet the needs of multiple athletes, this app offers advanced features that facilitate training management and data analysis.

**Key Features:**

- **Multiple Simultaneous Stopwatches:**
View up to four stopwatches simultaneously on the screen, with the option to access additional stopwatches through scrolling, making it easy to monitor multiple athletes at once.

- **Precision and Reliability:**
The stopwatches synchronize with the device's internal clock to ensure accuracy down to tens of microseconds. The display update frequency can be adjusted for a smoother experience without compromising measurement accuracy.

- **Training Data Management:**
Internally stores all training data per athlete and offers the option to send this data via email or WhatsApp. Includes training planning functionality with pre-defined laps and splits set by the operator.

- **Flexibility and Customization:**
Offers options for selecting units of measurement (meters, kilometers, yards, miles) and calculating average speeds in m/s, km/h, yd/s, and mph. Allows customization of theme (light/dark), language (Brazilian Portuguese, US English, Spanish), and stopwatch update interval.

- **Simplified Interface:**
Intuitive design with simplified action buttons, highlighting only essential functionalities for operation during training sessions. Allows adding and editing comments on training sessions, laps, and splits for detailed notes.

- **Individual Registration and Tracking:**
User registration with photo and contact details such as email and phone, facilitating the sending of results and feedback from training sessions.

**Technical Considerations:**

For devices with more modest specifications, it is recommended to keep the update interval around 0.5 seconds to ensure adequate interaction without affecting update fluidity, avoiding delays that can impair user experience during intensive use.

**About the App:**

Trainer’s Stopwatch was developed to provide coaches and athletes with a robust and reliable tool to monitor and improve performance in running. With the ability to manage multiple stopwatches and store detailed training data, this app is ideal for professionals and enthusiasts seeking precision and efficiency.

Download now and take your training to a new level of precision and control with Trainer’s Stopwatch!