Freedom251 › Musical Tuner Apps
Peterson iStroboSoft
What Peterson iStroboSoft is
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, paid 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 suits
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 it does well
- 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
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| iStroboSoft | iOS mobile app · optional in-app upgrades | $9.99, paid once |
As petersontuners.com lists them, read 11 Oct 2026. The maker's own page has the final word.
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.
Facts from Peterson iStroboSoft's own pages
- Audio accessory support
- The FAQ says the Pitch Grabber requires an audio-input-capable TRRS adapter; a headphone adapter alone will not work. · petersontuners.com, 11 Oct 2026
- Company and founding
- Peterson identifies the maker as Peterson Electro-Musical Products, Inc.; its company history says it was founded in Chicago in 1948. · petersontuners.com, 11 Oct 2026
- Display and calibration
- The app supports automatic or manual note selection, A=440 default pitch calibration, and cents, hertz, or MIDI note displays. · petersontuners.com, 11 Oct 2026
- Founded
- 1948 · petersontuners.com, 28 Sept 2026
- Frequency range
- The listed standard frequency response is 20 Hz–5000 Hz; optional extended frequency modes reach up to 22.05 kHz. · petersontuners.com, 11 Oct 2026
- Headquarters
- Alsip, Illinois, USA · petersontuners.com, 28 Sept 2026
- Inputs
- Users can tune electric instruments by plugging in or tune acoustic instruments with the device’s built-in microphone. · petersontuners.com, 11 Oct 2026
- Integration compatibility
- The specifications say iStroboSoft is not Peterson Connect compatible. · petersontuners.com, 11 Oct 2026
- Intended users
- The maker describes it for musicians who want precise tuning while on the move or before recording, and lists presets for many instrument families. · petersontuners.com, 11 Oct 2026
- Optional analysis tools
- iOS in-app upgrades include tuning scopes, harmonic tuning, and extended frequency mode; the page also describes a multicolor spectrogram upgrade. · petersontuners.com, 11 Oct 2026
- Other limits
- The specifications say it has no metronome, tone generator, stretch tuning tables, or tap tuning capability. · petersontuners.com, 11 Oct 2026
- Preset limit
- The app does not support user presets; its FAQ says presets are configured at the factory. · petersontuners.com, 11 Oct 2026
- Purpose
- iStroboSoft is a mobile strobe tuner for tuning instruments with 0.1-cent accuracy. · petersontuners.com, 11 Oct 2026
- Support
- The product page links to a user guide and offers a support ticket for personalized product support. · petersontuners.com, 11 Oct 2026
- Sweetened tunings
- The product page lists 76 sweetened tunings as an in-app purchase and describes presets for instruments including guitar, bass, steel guitar, orchestral instruments, and piano. · petersontuners.com, 11 Oct 2026
- Transposition
- Drop/Capo mode transposes notes up or down by as much as one octave. · petersontuners.com, 11 Oct 2026
Where Peterson iStroboSoft stands on Freedom251
- Musical Tuner Apps#31 of 32