# Amazing Slow Downer vs Harmony Cloud Pro

The clearest difference is price: Harmony Cloud Pro at Free against Amazing Slow Downer's $14.99. Harmony Cloud Pro also leads on rating (5.0 vs 3.9) and update cadence (weekly vs every 2 months). Amazing Slow Downer's advantage is in-app purchases (none vs 2) and chart position (#19 vs unranked). On ads, device support and iOS requirement there is nothing between them.

Harmony Cloud Pro is free to download; Amazing Slow Downer costs $14.99 up front. Harmony Cloud Pro sells 2 in-app purchases, starting at $5.99 per month. Amazing Slow Downer asks for nothing beyond the download.

Harmony Cloud Pro holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Amazing Slow Downer has 459 ratings behind it against 65, so its average is the more settled of the two. Written reviews point the same way: 69% of Amazing Slow Downer's written reviews are positive against 87% of Harmony Cloud Pro's.

Amazing Slow Downer ships an update every 2 months, Harmony Cloud Pro weekly. The most recent releases landed on October 20, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Amazing Slow Downer | Harmony Cloud Pro |
| --- | --- | --- |
| Price | $14.99 | **Free** |
| Rating | [3.9 (459 ratings)](https://appshunter.io/ios/app/amazing-slow-downer/id308998718/reviews) | **[5.0 (65 ratings)](https://appshunter.io/ios/app/harmony-cloud-pro/id6748590924/reviews)** |
| Number of ratings | **459** | 65 |
| Positive reviews | 68.8% of reviews | **86.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#19** | — |
| Size | 6 MB | 194 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Roni Music](https://appshunter.io/developer/308998721) | [The Melodic Progression Institute LLC](https://appshunter.io/developer/1054588451) |

## What reviewers say

### Amazing Slow Downer

[App page](https://appshunter.io/ios/app/amazing-slow-downer/id308998718)

**Currently charting:** #19 Top Paid · Music, #178 Top Paid (US App Store)

This app allows musicians to adjust the playback speed of music without altering its pitch. It supports looping sections, changing tuning and key, and even speeding up audio. Ideal for learning songs, techniques, or improving transcription skills.

**Highlights:** Adjust playback speed (25%-200%), Maintain pitch while changing speed, Seamless looping, Change tuning and musical key, Supports Apple Music streaming

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Excellent for learning songs
- 👍 Great for transcribing and practicing
- 🎶 Allows slowing down and looping songs
- 💡 Useful for language learning
- 👍 Intuitive and easy to use

**What reviewers complain about**

- 🐛 Occasional bugs and crashes
- 🔌 Compatibility issues with Apple Music
- 💰 Considered expensive by some
- 🔍 Difficulty setting precise loop points
- 🔇 No volume control independent of device

**Reported bugs**

- Playback freezing or not working as expected
- Inability to access purchased songs from iTunes library
- Connectivity issues when trying to use with Spotify

**Requested features**

- Add ability to record and import voice memos
- Improve library management and organization
- Implement Audiobus support for looping in other apps
- Add more precise speed and pitch adjustment controls
- Provide option to display waveform for better visualization


### Harmony Cloud Pro

[App page](https://appshunter.io/ios/app/harmony-cloud-pro/id6748590924)

This app helps musicians of all levels develop their ear for harmony and improvisation. It generates endless, unpredictable chord progressions based on user-selected chords, allowing for personalized learning and exploration of musical concepts.

**Highlights:** Ear training for musicians, Improvisation exploration, Generates unpredictable chord progressions, Customizable tempo, volume, and key, Tailorable to all skill levels, Patented harmonic algorithm

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $5.99 | per month |
| Annual | $59.99 | per year |


## Frequently asked questions

### Is Amazing Slow Downer free?

Amazing Slow Downer costs $14.99, with no in-app purchases.

### Is Harmony Cloud Pro free?

Harmony Cloud Pro is free to download, with in-app purchases available.

### Which has better reviews, Amazing Slow Downer or Harmony Cloud Pro?

Harmony Cloud Pro is rated higher. Amazing Slow Downer averages 3.9 out of 5 from 459 ratings, while Harmony Cloud Pro averages 5.0 from 65 ratings.

### Do Amazing Slow Downer or Harmony Cloud Pro have ads?

Neither Amazing Slow Downer nor Harmony Cloud Pro shows ads.

### Which is updated more often, Amazing Slow Downer or Harmony Cloud Pro?

Amazing Slow Downer ships an update every 2 months, and Harmony Cloud Pro weekly. Most recently, Amazing Slow Downer was updated on October 20, 2026 and Harmony Cloud Pro on October 15, 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.*