# MultiTone Generator vs TB Spectrogram

The clearest difference is in-app purchases: TB Spectrogram at none against MultiTone Generator's 7. TB Spectrogram also leads on iOS requirement (13.0 vs 15.5). MultiTone Generator's advantage is ratings volume (355 vs 50) and review sentiment (80% vs 71%). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. MultiTone Generator sells 7 in-app purchases, starting at $1.49 per month. TB Spectrogram asks for nothing beyond the download.

MultiTone Generator holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: MultiTone Generator has 355 ratings behind it against 50, so its average is the more settled of the two. Written reviews point the same way: 80% of MultiTone Generator's written reviews are positive against 71% of TB Spectrogram's.

MultiTone Generator ships an update monthly, TB Spectrogram every 3 weeks. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | MultiTone Generator | TB Spectrogram |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (355 ratings)](https://appshunter.io/ios/app/multitone-generator/id1161245288/reviews)** | [4.4 (50 ratings)](https://appshunter.io/ios/app/tb-spectrogram/id1530170842/reviews) |
| Number of ratings | **355** | 50 |
| Positive reviews | **80.0% of reviews** | 71.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 9 MB | 15 MB |
| Requires iOS | 15.5 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [ToneBoosters](https://appshunter.io/developer/1472446500) |

## What reviewers say

### MultiTone Generator

[App page](https://appshunter.io/ios/app/multitone-generator/id1161245288)

Generate a wide range of audio test tones, including sine, rectangular, triangular, and sawtooth waves. Explore frequency sweeps, noise generation, and customizable settings. Upgrade for advanced features like creating multiple tone combinations and extended frequency ranges.

**Highlights:** Generate sine, rectangular, triangular, and sawtooth waves, Play frequency sweep test tones, Sweep repeat/wobble function, Play white and pink noise, Customizable frequency and sweep time ranges, Create up to 16 tone combinations (PRO)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MultiTone PRO for one month | $1.49 | per month |
| MultiTone PRO+ for one month | $2.99 | per month |
| MultiTone PRO for one year | $7.99 | per year |
| MultiTone PRO+ for one year | $14.99 | per year |
| MultiTone PRO Lifetime Access | $9.99 | one-time |
| MultiTone PRO+ Lifetime Access | $9.99 | one-time |
| MultiTone PRO+ Lifetime Access | $19.99 | one-time |

**What reviewers like**

- ✨ Sleek UI update
- 🔊 Tinnitus simulation accuracy
- 💡 Useful for frequency healing
- 🎶 Aids musical tuning understanding
- 💯 Great value for price

**What reviewers complain about**

- 📱 iPhone frequency title readability
- 💰 Features moved to paid tier
- 💸 Deceptive update practices
- 🔊 Left/right speaker switch malfunction
- 🔋 Battery drain when in background

**Reported bugs**

- Left and right speaker switches do not work
- App drains battery when in background
- Amplitude difficult to adjust on iPhones
- High battery consumption after iOS 11 upgrade

**Requested features**

- Custom frequency names (bold)
- Reorder frequency list
- Display saved preset names at top
- Sweeping duration less than 0.1s
- Create and save multiple tracks


### 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 MultiTone Generator free?

MultiTone Generator 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, MultiTone Generator or TB Spectrogram?

MultiTone Generator is rated higher. MultiTone Generator averages 4.6 out of 5 from 355 ratings, while TB Spectrogram averages 4.4 from 50 ratings.

### Do MultiTone Generator or TB Spectrogram have ads?

Neither MultiTone Generator nor TB Spectrogram shows ads.

### Which is updated more often, MultiTone Generator or TB Spectrogram?

MultiTone Generator ships an update monthly, and TB Spectrogram every 3 weeks. Most recently, MultiTone Generator was updated on October 7, 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.*