Peterson Tuners has temporarily reduced the pricing on its iPhone application iStroboSoft from $9.99 to $0.99 for a limited time.
StroboSoft is a professional-grade strobe tuner for the iPhone and iPod. Offering the same 0.01-cent accuracy of its hardware equivalents, iStroboSoft provides an accurate pocket tuner for musicians.
iStroboSoft is currently at Version 1.30.01. Features include a noise filter, 24dB input boost, full screen strobe display with a user-selectable color scheme, capo and drop tuning options, and a calibration feature that syncs the tuner to an external source. Peterson also offers a mini mic for iPod users and an adaptor cable for direct line-in usage from a guitar.