# Live Spectrogram vs SignalScope X

The clearest difference is review sentiment: Live Spectrogram at 63% against SignalScope X's 10%. Live Spectrogram also leads on rating (4.8 vs 3.0) and in-app purchases (none vs 11). SignalScope X's advantage is price (Free vs $1.99) and update cadence (monthly vs every 31 months). On ads and device support there is nothing between them.

SignalScope X is free to download; Live Spectrogram costs $1.99 up front. SignalScope X sells 11 in-app purchases, starting at $3.49 per month. Live Spectrogram asks for nothing beyond the download.

Live Spectrogram holds the better App Store score, 4.8 against 3.0. Both are backed by a comparable volume of ratings — 6 and 23 respectively. Written reviews point the same way: 63% of Live Spectrogram's written reviews are positive against 10% of SignalScope X's.

Live Spectrogram ships an update every 31 months, SignalScope X monthly. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Live Spectrogram | SignalScope X |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.8 (6 ratings)](https://appshunter.io/ios/app/live-spectrogram/id630831185/reviews)** | [3.0 (23 ratings)](https://appshunter.io/ios/app/signalscope-x/id1304775893/reviews) |
| Number of ratings | 6 | **23** |
| Positive reviews | **62.5% of reviews** | 10.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 31 months | **Monthly** |
| Monetization | Paid | **Freemium** |
| Size | 15 MB | 19 MB |
| Requires iOS | **13.0** | 18.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Krueger Systems, Inc.](https://appshunter.io/developer/299293363) | [Faber Acoustical, LLC](https://appshunter.io/developer/284781780) |

## What reviewers say

### Live Spectrogram

[App page](https://appshunter.io/ios/app/live-spectrogram/id630831185)

Visualize sound frequencies in real-time with this tool. It displays audio intensity across time and frequency using color, helping you perfect singing, analyze animal calls, or locate household noises.

**Highlights:** Real-time audio visualization, Frequency analysis, Time-based spectrum display, Intensity shown by color, Singing voice perfection, Animal call analysis, Sound source identification

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### SignalScope X

[App page](https://appshunter.io/ios/app/signalscope-x/id1304775893)

This app provides powerful measurement and analysis tools for acoustics, audio, and electronics. It offers a free oscilloscope and subscription-based tool sets for basic, advanced, and professional needs, compatible across iPhone, iPad, and Mac.

**Highlights:** Oscilloscope, FFT Analyzer, Spectrogram Analyzer, Data Recorder, Sound Intensity Analyzer, Room Acoustics Analyzer

**Features:** Family Sharing, Vision Pro support

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Tool Set, 1 Month | $3.49 | per month |
| Advanced Tool Set, 1 Month | $9.99 | per month |
| Pro Tool Set, 1 Month | $24.99 | per month |
| Basic Tool Set, 1 Year | $34.99 | per year |
| Advanced Tool Set, 1 Year | $99.99 | per year |
| Pro Tool Set, 1 Year | $249.99 | per year |
| 14-day Free Trial, Pro Tool Set | Free | one-time |
| Basic Tool Set 2026 | $69.99 | one-time |
| Advanced Tool Set 2026 from Basic | $219.99 | one-time |
| Pro Tool Set 2026 from Advanced | $309.99 | one-time |
| Pro Tool Set 2026 from Basic | $439.99 | one-time |

**What reviewers like**

- 👍 Powerful software
- 👍 Good for professional testing
- 👍 Captures faint hums
- 👍 Works well for waveforms
- 👍 Useful for guitar debugging

**What reviewers complain about**

- 💸 Expensive subscription model
- 💸 High one-time purchase cost
- 💸 Perceived as a rip-off
- 💸 Previous purchases invalidated
- 💸 Lack of upgrade path

**Reported bugs**

- Recording starts and stops
- App crashes on launch
- Oscilloscope and FFT not functioning
- SPL meter inaccurate/uncalibratable
- App not working on older devices

**Requested features**

- Manual for better understanding
- Ability to store and retrieve setups
- One-off payment option
- More intuitive user interface
- Ability to change Y-axis scale


## Frequently asked questions

### Is Live Spectrogram free?

Live Spectrogram costs $1.99, with no in-app purchases.

### Is SignalScope X free?

SignalScope X is free to download, with in-app purchases available.

### Which has better reviews, Live Spectrogram or SignalScope X?

Live Spectrogram is rated higher. Live Spectrogram averages 4.8 out of 5 from 6 ratings, while SignalScope X averages 3.0 from 23 ratings.

### Do Live Spectrogram or SignalScope X have ads?

Neither Live Spectrogram nor SignalScope X shows ads.

### Which is updated more often, Live Spectrogram or SignalScope X?

Live Spectrogram ships an update every 31 months, and SignalScope X monthly. Most recently, Live Spectrogram was updated on October 14, 2026 and SignalScope X on October 16, 2026.

---

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