Peterson iStroboSoft is an iOS mobile strobe tuner for instruments, with listed accuracy of 0.1 cent. Electric instruments can be connected directly, while acoustic instruments use the built-in microphone. Note selection may be automatic or manual, with A=440 as the default reference pitch and displays in cents, hertz, or MIDI notes. Drop/Capo mode transposes notes up or down by up to one octave. The app lists 76 sweetened tunings as an in-app purchase, including presets for guitar, bass, steel guitar, orchestral instruments, and piano. Optional upgrades add tuning scopes, harmonic tuning, extended frequency mode, and a multicolor spectrogram. Standard frequency response is 20 Hz–5000 Hz; optional modes reach 22.05 kHz. The app costs 9.99 USD per once. Peterson says it is not Peterson Connect compatible and does not support user presets, a metronome, tone generator, stretch tuning tables, or tap tuning.
Who it is for
It suits iOS musicians who need precise tuning while traveling or before recording. Its instrument presets and electric or microphone input support cover many instrument families.
What is good
- 0.1-cent listed tuning accuracy
- Electric and acoustic input options
- Automatic or manual note selection
- Drop/Capo transposition up to one octave
- Optional extended analysis tools
What to know first
- iOS only
- No free plan
- No user presets
- No metronome or tone generator
Verdict
iStroboSoft provides detailed strobe tuning controls and optional analysis features in an iOS app. Buyers should account for its missing utility features and separate in-app purchases.
Peterson iStroboSoft plans and pricing
All plansCompared on musical tuner apps
- Free plan
- No
- Strobe display
- Yes
- Alternate tunings
- Yes
- Custom reference pitch
- Yes
- Available platforms
- ios



