# iStroboSoft vs FFT Plot

The clearest difference is rating: FFT Plot at 4.8 against iStroboSoft's 4.3. FFT Plot also leads on in-app purchases (none vs 11) and review sentiment (84% vs 76%). iStroboSoft's advantage is update cadence (fortnightly vs every 17 months) and chart position (#16 vs unranked). On price, ads, device support and iOS requirement there is nothing between them.

iStroboSoft costs $9.99 and FFT Plot $9.99 up front. iStroboSoft sells 11 one-off in-app purchases. FFT Plot asks for nothing beyond the download.

FFT Plot holds the better App Store score, 4.8 against 4.3. Both are backed by a comparable volume of ratings — 298 and 90 respectively. Written reviews point the same way: 76% of iStroboSoft's written reviews are positive against 84% of FFT Plot's.

iStroboSoft ships an update fortnightly, FFT Plot every 17 months. The most recent releases landed on October 18, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | iStroboSoft | FFT Plot |
| --- | --- | --- |
| Price | $9.99 | $9.99 |
| Rating | [4.3 (298 ratings)](https://appshunter.io/ios/app/istrobosoft/id308296029/reviews) | **[4.8 (90 ratings)](https://appshunter.io/ios/app/fft-plot/id569468015/reviews)** |
| Number of ratings | **298** | 90 |
| Positive reviews | 76.0% of reviews | **84.4% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 17 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#16** | — |
| Size | 5 MB | 7 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Peterson Tuners](https://appshunter.io/developer/308296032) | [ONYX Apps](https://appshunter.io/developer/356553882) |

## What reviewers say

### iStroboSoft

[App page](https://appshunter.io/ios/app/istrobosoft/id308296029)

**Currently charting:** #16 Top Paid · Music, #159 Top Paid (US App Store)

This application provides highly accurate tuning for musical instruments, offering professional-grade precision with a real-time strobe display. It supports various tuning modes, temperaments, and input methods, making it suitable for both acoustic and electric instruments.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extended Frequency Modes | $4.99 | one-time |
| Bluegrass Sweeteners | $5.99 | one-time |
| Buzz Feiten Pack | $5.99 | one-time |
| Guitar & Bass Sweeteners | $5.99 | one-time |
| Orchestral Sweeteners | $5.99 | one-time |
| World Sweetener Pack | $9.99 | one-time |
| Tuning Tools | $9.99 | one-time |
| Steel Guitar Sweeteners | $14.99 | one-time |
| Harmonic Tuning | $19.99 | one-time |
| Keyboard Sweeteners | $19.99 | one-time |
| Full Discounted Upgrade Pack | $59.99 | one-time |

**What reviewers like**

- 🚀 Extremely accurate
- 🔒 Reliable and stable
- 👍 Fantastic for instrument setup and intonation
- 👍 Portable and convenient
- 👍 Excellent value for the price

**What reviewers complain about**

- 🐛 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

**Reported bugs**

- App freezes or crashes on certain iOS versions
- Incorrect note detection on some instruments
- Display issues with newer iPhone/iPad models

**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


### FFT Plot

[App page](https://appshunter.io/ios/app/fft-plot/id569468015)

This real-time audio analysis app provides precision sound measurement and visualization. It's ideal for detecting sound issues, room tuning, and speaker calibration, offering detailed frequency analysis for musicians and audio professionals.

**Highlights:** Real-time audio analysis, Frequency detection, Averaging options, Window functions, Linear and logarithmic scales, Weighting options, Draggable cursors

**In-app purchases:** none


## Frequently asked questions

### Is iStroboSoft free?

iStroboSoft costs $9.99, and also offers in-app purchases.

### Is FFT Plot free?

FFT Plot costs $9.99, with no in-app purchases.

### Which has better reviews, iStroboSoft or FFT Plot?

FFT Plot is rated higher. iStroboSoft averages 4.3 out of 5 from 298 ratings, while FFT Plot averages 4.8 from 90 ratings.

### Do iStroboSoft or FFT Plot have ads?

Neither iStroboSoft nor FFT Plot shows ads.

### Which is updated more often, iStroboSoft or FFT Plot?

iStroboSoft ships an update fortnightly, and FFT Plot every 17 months. Most recently, iStroboSoft was updated on October 18, 2026 and FFT Plot on October 19, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*