# MultiTone Generator vs 639 Player Plus

The clearest difference is ratings volume: MultiTone Generator at 355 against 639 Player Plus's 2. MultiTone Generator also leads on update cadence (monthly vs every 5 months). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. MultiTone Generator sells 7 in-app purchases, starting at $1.49 per month and 639 Player Plus sells 11 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for MultiTone Generator against 4.5 for 639 Player Plus. That said, the two scores are not equally well evidenced: MultiTone Generator has 355 ratings behind it against 2, so its average is the more settled of the two.

MultiTone Generator ships an update monthly, 639 Player Plus every 5 months. The most recent releases landed on October 7, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | MultiTone Generator | 639 Player Plus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (355 ratings)](https://appshunter.io/ios/app/multitone-generator/id1161245288/reviews)** | [4.5 (2 ratings)](https://appshunter.io/ios/app/639-player-plus/id6739763212/reviews) |
| Number of ratings | **355** | 2 |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 9 MB | 79 MB |
| Requires iOS | **15.5** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [SYQEL INC](https://appshunter.io/developer/1671066431) |

## 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


### 639 Player Plus

[App page](https://appshunter.io/ios/app/639-player-plus/id6739763212)

This music player automatically retunes your entire library to the 639 Hz frequency, believed to foster harmony and connection. It saves time and storage by avoiding manual file conversions and offers features like custom playlists and a sleep timer.

**Highlights:** Automatic 639 Hz retuning, Save time and storage, Custom playlist creation, Sleep timer, iOS and CarPlay support, Full playback control

**Features:** Family Sharing, Siri integration

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited 639 Hz retuning forever. | $19.99 | one-time |
| Frequency - 432 Hz | $19.99 | one-time |
| Frequency - 285 Hz | $19.99 | one-time |
| Frequency - 396 Hz | $19.99 | one-time |
| Frequency - 963 Hz | $19.99 | one-time |
| Frequency - 174 Hz | $19.99 | one-time |
| Frequency - 417 Hz | $19.99 | one-time |
| Frequency - 741 Hz | $19.99 | one-time |
| Frequency - 528 Hz | $19.99 | one-time |
| Frequency - 852 Hz | $19.99 | one-time |
| Solfeggio Core Bundle | $59.99 | one-time |


## Frequently asked questions

### Is MultiTone Generator free?

MultiTone Generator is free to download, with in-app purchases available.

### Is 639 Player Plus free?

639 Player Plus is free to download, with in-app purchases available.

### Which has better reviews, MultiTone Generator or 639 Player Plus?

MultiTone Generator is rated higher. MultiTone Generator averages 4.6 out of 5 from 355 ratings, while 639 Player Plus averages 4.5 from 2 ratings.

### Do MultiTone Generator or 639 Player Plus have ads?

Neither MultiTone Generator nor 639 Player Plus shows ads.

### Which is updated more often, MultiTone Generator or 639 Player Plus?

MultiTone Generator ships an update monthly, and 639 Player Plus every 5 months. Most recently, MultiTone Generator was updated on October 7, 2026 and 639 Player Plus on September 27, 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.*