# iStroboSoft > Professional-grade strobe tuner app for precise musical instrument tuning. (iPhone/iPad app by Peterson Tuners.) - Source: https://appshunter.io/ios/app/istrobosoft/id308296029 (this page in markdown: same URL + `.md`) - Developer: [Peterson Tuners](https://appshunter.io/developer/308296032) - Category: Music, Utilities - Price: $9.99 with in-app purchases - Rating: 4.30/5 from 298 App Store ratings · 361 written reviews indexed - Age rating: 4+ - Requires: iOS 12.0 · 5 MB - Languages: American English - Released: 2009-03-31 - Data updated: 2026-08-28 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/istrobosoft/id308296029/reviews.md ## What is iStroboSoft? Usage questions? ***Please contact us before posting an issue in the reviews.*** Peterson Support at info@strobosoft.com or call 708.388.3311 M-F 8am-5pm (CST) TRUSTED BY PROFESSIONALS FOR OVER 70 YEARS. ---iStroboSoft for iOS--- Peterson Strobe Tuners' popular StroboSoft tuning application for iPhone and iPad. iStroboSoft™ offers the unmatched accuracy of a mechanical strobe tuner for the highest degree of precision available in a software tuning application. Plug in and tune your electrics and acoustics quickly and easily with 1/10th cent accuracy. Peterson Tuners has offered tuning solutions for over 70 years and is the only company specializing in hardware and software tuning products for all levels of musicians. FEATURES: • Stand-by mode to reduce battery usage or freeze the display. • Guided Mode Tuning offers an alternate strobe display that slows the strobe bands one-by-one as you come closer to tune. • Speed control for strobe display; dampen the response for a longer note display. • 12 Temperaments with adjustable root control. • Display all sharps note display. • Assisted Low Note Detection (ALND) helps capture very low frequencies. • Mains hum filter option reduces the chances of the tuner latching on to 50 or 60Hz cycle hum when using a direct line-in connection or while using the app during device charging. • Smooth, real-time strobe display allows you to achieve an unmatched level of accuracy. • Note/Octave window displays the correct note and octave for the note being tuned. • Cents display allows you to see how far out of tune your note is in cent values. • Tune in auto or manual mode. • Toggle the display to show: cents, Hz, MIDI note value for the note being tuned. • Glowing flat/sharp indicators assist when tuning a note very far from the target position. • Noise filter: Use the noise filter when utilizing an external mic or clip-on tuning device to help reduce the effect of extraneous environmental noise during tuning. • Input boost: The input boost will raise all input frequencies by +24dB. • Calibration mode: iStroboSoft can be calibrated to an external source guaranteeing 1/10th cent accuracy. • Drop/Capo mode: iStroboSoft will auto-transpose notes up or down to one full octave. • Adjustable Concert A: Change the Concert A reference of the tuner to accommodate tuning to a fixed instrument, such as a piano, or tune instruments that do not utilize the typical Western A440 reference. • Full screen mode permits the strobe display to be maximized on screen to allow better viewing from a distance. • Change strobe display colors to accommodate different lighting environments or set a preferred user color for those with limited color palette recognition. Use the built-in mic on your device for tuning or connect directly via the headphone jack using an approved adaptor cable or interface. Devices without a headphone jack can connect a pickup or mic using the lightning-to-audio adaptor. Support via email at: info@strobosoft.com or call 708.388.3311 M-F 8am-5pm (CST) ## Key features - 1/10th cent accuracy - Real-time strobe display - Guided Mode Tuning - 12 Temperaments with adjustable root - Assisted Low Note Detection - Drop/Capo mode - Adjustable Concert A ## Pricing and in-app purchases Base price: $9.99. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | World Sweetener Pack | $9.99 | one-time | | Full Discounted Upgrade Pack | $59.99 | one-time | | Bluegrass Sweeteners | $5.99 | one-time | | Tuning Tools | $9.99 | one-time | | Harmonic Tuning | $19.99 | one-time | | Extended Frequency Modes | $4.99 | one-time | | Buzz Feiten Pack | $5.99 | one-time | | Guitar & Bass Sweeteners | $5.99 | one-time | | Keyboard Sweeteners | $19.99 | one-time | | Orchestral Sweeteners | $5.99 | one-time | | Steel Guitar Sweeteners | $14.99 | one-time | ## Chart rankings - #46 in Top Paid · Music (US App Store) ## What do users think of iStroboSoft? Overall sentiment: positive **Pros** - 🚀 Extremely accurate - 🔒 Reliable and stable - 👍 Fantastic for instrument setup and intonation - 👍 Portable and convenient - 👍 Excellent value for the price - 👍 Intuitive and easy to use - 👍 Versatile for various instruments **Cons** - 🐛 Compatibility issues with iOS updates - 💰 Expensive in-app purchases for additional features - 🐛 Inconsistent performance, jumps between notes - 🐛 Struggles with low and high notes - 🐛 Microphone input not always reliable **Commonly reported bugs** - App freezes or crashes on certain iOS versions - Incorrect note detection on some instruments - Display issues with newer iPhone/iPad models **Most requested features** - Add support for more sweetened tunings and temperaments - Improve display visibility and layout for newer devices - Integrate with audio apps and allow routing through other apps - Add Apple Watch app for quick tuning access - Improve noise filtering and input sensitivity ## Recent user reviews (10 of 361) All indexed reviews: https://appshunter.io/ios/app/istrobosoft/id308296029/reviews.md ### 5/5 — worth it *2026-07-30, version 3.00* absolutely worth it ### 2/5 — Good as a phone app bad for my use cases *2026-06-01, version 3.00* I purchased this app based off of good reviews here and on Reddit. From the day I purchased it I’ve been disappointed by the issues I’ve had. On my M4 IPad Pro it almost always displays the hz multiple octaves up (frequently double.) Also I cannot get my interface for my guitar to work with this app. It’s recording and sending input to the iPad but nothing is coming through to the app. I’m not sure if this is even meant to be supported but I resorted to trying it considering I could never get it to work normally. On my iPhone 15 Pro the app works almost seamlessly if I put my phone extremely close to the guitar. Any further away and it can’t hear it even on boost mode with the noise filter on. I tried turning them off and no input. It jumps octaves much less on the phone but it still does it frequently enough to be annoying. Some of this could be user error but I didn’t change any settings after downloading the app. In general the app works well enough and I’m sure the good reviews reflect good experiences. I just didn’t have a great experience myself. ### 4/5 — Almost perfect *2026-05-31, version 3.00* I really wanna use this for work on my iPad mini and country but I will say after not using it for a few minutes it freezes up and I have to restart it. Can do that mid show. ### 5/5 — Best Tuner *2026-03-02, version 3.00* This is easily the best tuner app, especially if you want hyper-accuracy. I’d give this a 6 out of 5 rating if only they’d include classical guitar in their sweetened tunings ### 5/5 — Peterson 1 *2026-02-21, version 3.00* Anyone that doesn’t have a Peterson Tuner needs to look in a mirror and ask themselves what they are doing with their lives. This app does a lot and can be intimidating but the Sweetners are worth it and it takes time to understand it all. If you have questions contact Petersons Customer Service they are always willing to help and is one of the reasons why they have been in business for over 70 years. The only thing I wish they would add to the app is the ability to link my iPhone or iPad to my StroboPlus HDC with this app. My laptop died and have no way of changing out the tunings I currently have loaded on it. ### 5/5 — The best tuner you will ever have. *2026-02-17, version 3.00* Title says it all. ### 1/5 — No good for intonation *2026-01-26, version 3.00* I bought this to set intonation on a guitar. And it’s not any good for that. It just keeps turning gray like it can’t hear anything. It also has a function that when you hit a target note , or get close, it grays out and stops. You can’t turn that off either. Soo annoying. Waste of money. ### 5/5 — AUV3 & easy access to 440 please *2026-01-18* This tuner is most accurate on the market. A AUv3 function to using it as a plugin in Loopy Pro would be great and quick access concert pitch would be awesome. ### 5/5 — Not good *2025-12-16, version 3.00* It requires you to buy additional upgrades asking for 50 dollars more on top of the 9.99 originally paid. I’m asking for a refund. ### 2/5 — not the best. *2025-12-02, version 3.00* I purchased this tuning app to get precise tuning, and i’ll admit it does it well, but for some reason it’s constantly stuck on “F#” and will be stuck like that unless i play a note really loud. ## Frequently asked questions about iStroboSoft ### What does iStroboSoft do? iStroboSoft is a software application that provides highly accurate tuning for musical instruments. It utilizes a real-time strobe display to offer professional-grade precision, allowing users to tune electric and acoustic instruments with 1/10th cent accuracy. ### What are the key features of iStroboSoft? Key features include a real-time smooth strobe display for unmatched accuracy, Guided Mode Tuning that slows the display as you get closer to tune, support for 12 temperaments with adjustable root control, Assisted Low Note Detection for low frequencies, and a Drop/Capo mode for auto-transposing notes. ### How much does iStroboSoft cost? The application is available for free, but it offers in-app purchases. Specific features or advanced functionalities may require a purchase to unlock. ### What devices is iStroboSoft compatible with? iStroboSoft is designed for iOS devices, specifically iPhones and iPads. It can use the built-in microphone or connect directly via the headphone jack with an approved adapter cable or interface. Devices without a headphone jack can use a lightning-to-audio adapter. ### Who is iStroboSoft intended for? This application is trusted by professionals and is suitable for all levels of musicians who need a highly precise tuning solution. It is ideal for tuning a wide range of instruments, including guitars, basses, and orchestral instruments. ## Version history (last 5 releases) ### 3.00 — 2023-10-27 • Fixes auto-lock issues with iOS17. • Various bug fixes and improvements. ### 2.99 — 2023-10-21 • Update for iOS 17 • Display update for fullscreen view on current generation hardware • Audio engine optimization • Various bug fixes ### 2.98 — 2017-11-22 This app has been updated by Apple to display the Apple Watch app icon. fix a bug introduced in last release that broke access to some settings items. ### 2.97 — 2017-11-20 reinstate backwards IOS support to 8.1 ### 2.96 — 2017-10-17 - Optimized for iOS 11 - Fixed UI issues ## Apps similar to iStroboSoft | App | Rating | Price | Category | | --- | --- | --- | --- | | [Guitar Tuner - Ukulele & Bass](https://appshunter.io/ios/app/guitar-tuner-ukulele-and-bass/id662890455) | 4.4 (7,464) | Free | Music | | [Tuner Pro: Guitar Tuner & Tab](https://appshunter.io/ios/app/tuner-pro-guitar-tuner-and-tab/id1438248122) | 4.5 (45,065) | Free | Music | | [GuitarTuna: Tune & Play Guitar](https://appshunter.io/ios/app/guitartuna-tune-and-play-guitar/id527588389) | 4.8 (146,520) | Free | Music | | [Bass Tuner >>](https://appshunter.io/ios/app/bass-tuner/id1471438485) | 4.2 (705) | Free | Music | | [Guitar Tuner Easy tune chords](https://appshunter.io/ios/app/guitar-tuner-easy-tune-chords/id838981369) | 4.6 (45,879) | Free | Music | | [Tuner Lite by Piascore](https://appshunter.io/ios/app/tuner-lite-by-piascore/id635828559) | 4.5 (9,949) | Free | Music | ## Related topics [strobe tuner](https://appshunter.io/ios/topics/strobe-tuner) · [peterson tuners](https://appshunter.io/ios/topics/peterson-tuners) · [istrobosoft](https://appshunter.io/ios/topics/istrobosoft) · [peterson strobe tuner](https://appshunter.io/ios/topics/peterson-strobe-tuner) · [peterson istrobosoft](https://appshunter.io/ios/topics/peterson-istrobosoft) · [guitar strobe tuner](https://appshunter.io/ios/topics/guitar-strobe-tuner) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-28.*