This app is especially designed for the professional studio flash HS
Freeze 6 that is operated with a rechargeable battery. To be able to use this app, you need to have a Rollei Pro Radio Transmitter for Canon, Nikon or Sony. When using this app you change settings on the flashes such as the flash power, the mode (TTL / Manual), RATIO mode, High Speed Sync or the modelling lamp (ON / OFF). Whithin this app you can create up to 15 set ups (studios) with different settings.