sledNET for iOS


sledNET is a mobile networked system that offers snowmobile enthusiasts increased safety and convenience while on the trail or in deep powder. By linking the iPhone worn by each rider, sledNET always knows key performance information and the location of each sled. Voice conversations between two or more riders can be activated manually or triggered automatically based on unsafe conditions. The Locator and Orientation Assistant can play a crucial role during an avalanche, and the speech engine can assist if the rider is unable to talk. Convenient access to personal and group performance statistics, along with automatic control over background music, makes sledNET the perfect companion for any sledder. 


sledNET Mobile Network

While sledNET is a versatile companion when riding alone, it's full power stands out in a group setting. Certain features such as voice communication and real-time data telemetry rely on a wireless network. More often than not however, a cell phone network isn't available on the trail or in the wilderness. That's why sledNET uses Bluetooth for short-range communication and Wi-FI for long-range communication. Using Wi-Fi however requires an existing Wi-Fi network, and MobileApp Systems offers the sledNET Access Point radio that is designed specifically for snowmobiles. Each sledNET Access Point acts as a repeater between sleds to extend the overall length of the sledNET mobile network. 

Voice Communications

Two or more sledders in the same sledNET group can talk to one another under manual or automatic control. A sledNET voice chat can be triggered when the rider shakes their iPhone in a specific manner, or presses the in-line control button on the iPhone headset. All riders in the same sledNET group are conferenced-in. 

Real-time Data Telemetry

sledNET constantly monitors speed, altitude, acceleration, orientation, and location. All riders in the same sledNET group share this data in real-time to enable performance comparisons, awareness of unsafe riding conditions, and monitoring the distance between sleds. 

Distress Alerts

Distress Alerts are triggered manually or automatically and are received by all riders in the same sledNET group. A rider can signal they are in an emergency situation and need help, or simply that they need a break to rest at the next checkpoint or junction. 

Locator Map

The Locator Map plots each sled in the same sledNET group, complete with real-time separation distance. Locations are based on the last reported location of each sled and can provide crucial information in an emergency such as an avalanche. Real map graphics are shown if map data is available from a cell network or cached from previous viewing. 

Orientation Assistant

The Orientation Assistant is a 3D view of your sled that rotates, tilts and dives in sync with the motion of your sled (iPhone). Since orientation is relative to the earth's gravity, the Orientation Assistant can play a crucial role if the rider is buried during an avalanche and needs to determine the direction of safety. 

Accident Detection

Accident Detection can be enabled to help detect and alert when an accident may have occurred. A 'rolled sled' is detected when an unsafe pitch or roll condition is sensed, while a 'sudden stop' is detected when an unsafe deceleration condition is sensed. A Help Request is issued automatically and voice chatting with the entire group is initiated if configured. 

Leaderboard Performance Statistics

sledNET constantly monitors maximum speed, altitude and acceleration. Performance data can be used for personal improvement or to verify the functionality of other equipment. Taking advantage of Real-Time Data Telemetry, sledNET also tracks the performance standings of the entire sledNET group. 


  • slednet requires an iPhone 4 or iPhone 4S, along with iOS 5.0 or later. 
  • Continued use of GPS running in the background can dramatically decrease battery life.


  • [FIX] Corrected microphone indicator state.
  • [FIX] Minor corrections to in-app help.