# Tone Scan vs TB Spectrogram

The clearest difference is rating: TB Spectrogram at 4.4 against Tone Scan's 3.2. TB Spectrogram also leads on in-app purchases (none vs 4) and update cadence (every 3 weeks vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. Tone Scan sells 2 one-off in-app purchases. TB Spectrogram asks for nothing beyond the download.

TB Spectrogram holds the better App Store score, 4.4 against 3.2. That said, the two scores are not equally well evidenced: TB Spectrogram has 50 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 50% of Tone Scan's written reviews are positive against 71% of TB Spectrogram's.

Tone Scan ships an update every 7 months, TB Spectrogram every 3 weeks. The most recent releases landed on October 5, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Tone Scan | TB Spectrogram |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.2 (6 ratings)](https://appshunter.io/ios/app/tone-scan/id1435240826/reviews) | **[4.4 (50 ratings)](https://appshunter.io/ios/app/tb-spectrogram/id1530170842/reviews)** |
| Number of ratings | 6 | **50** |
| Positive reviews | 50.0% of reviews | **71.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 4 MB | 15 MB |
| Requires iOS | 15.5 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Openchord Inc.](https://appshunter.io/developer/1435193332) | [ToneBoosters](https://appshunter.io/developer/1472446500) |

## What reviewers say

### Tone Scan

[App page](https://appshunter.io/ios/app/tone-scan/id1435240826)

Analyze live or recorded audio to reveal musical details like pitch, timbre, and tonal balance. This app offers three live scans to help you understand sound more deeply, simplifying tasks like instrument tuning and learning songs by ear.

**Highlights:** Chromatic spectrum analysis, Polyphonic tuner, Note mix for tonal balance, Pitch recognition, Timbre analysis, Instrument tuning, Chord and key spelling

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Audio Free Trial | Free | one-time |
| Unlock Audio | $4.99 | one-time |


### TB Spectrogram

[App page](https://appshunter.io/ios/app/tb-spectrogram/id1530170842)

This app provides real-time audio analysis with a spectrogram, spectrum analyzer, and goniometer. It can be used as a standalone application or as an AUv3 plugin within compatible music production hosts. Visualize your audio in detail with adjustable settings and multiple display options.

**Highlights:** Real-time spectrogram and spectrum analysis, Goniometer for stereo signal analysis, AUv3 plugin compatibility, Adjustable frequency and time resolution, Customizable color themes, On-screen piano keyboard mapping

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Tone Scan free?

Tone Scan is free to download, with in-app purchases available.

### Is TB Spectrogram free?

TB Spectrogram is free to download, with no in-app purchases.

### Which has better reviews, Tone Scan or TB Spectrogram?

TB Spectrogram is rated higher. Tone Scan averages 3.2 out of 5 from 6 ratings, while TB Spectrogram averages 4.4 from 50 ratings.

### Do Tone Scan or TB Spectrogram have ads?

Neither Tone Scan nor TB Spectrogram shows ads.

### Which is updated more often, Tone Scan or TB Spectrogram?

Tone Scan ships an update every 7 months, and TB Spectrogram every 3 weeks. Most recently, Tone Scan was updated on October 5, 2026 and TB Spectrogram on October 6, 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.*