There are two collection modes when recording with the IMeasureU app: streaming and on board.
Streaming is ideal when instant information is required and the sensor is staying within a close proximity of the device it is streaming to. On board recording is ideal when a higher sampling rate is required and/or the sensor will not be within the proximity of the IOS device for part of the recording.
The details of the two modes can be seen in the table below:
| Collection Mode: | Streaming | On-Board |
| Data Storage: | Streamed directly to device via Bluetooth | Stored on the IMU internal memory |
| Accessing Data: | Email from app OR upload to iTunes | Download via the Lightning Desktop App |
| # of Sensors: | 4 sensors streaming across a single trial | 8 sensors across 2 active trials |
| Frame Rates: | 3-Axis at 500Hz9-Axis at 100Hz | 3-Axis at 1000Hz9-Axis at 500Hz |
| Synchronisation: | Time vectors of all sensors sync-ed | Time sync information relayed to app when in range of IOS device |