# Spindles vs Harmonic.Audio Tuner

The clearest difference is in-app purchases: Harmonic.Audio Tuner at none against Spindles's 5. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Spindles sells 5 in-app purchases, starting at $6.99 per month. Harmonic.Audio Tuner asks for nothing beyond the download.

## The numbers

| Metric | Spindles | Harmonic.Audio Tuner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/spindles/id6479562471/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 26 MB | 18 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Redsquared Inc](https://appshunter.io/developer/1736324648) | [Jacob Fandel](https://appshunter.io/developer/1802325602) |

## What reviewers say

### Spindles

[App page](https://appshunter.io/ios/app/spindles/id6479562471)

Experience a curated sound environment designed for sleep, focus, and calm. Featuring analog music, soundscapes, and auditory patterns, it supports gradual transitions and sustained states for better rest and reduced anxiety. Enjoy a refined listening experience with intelligent playback controls.

**Highlights:** Purpose-composed analog and acoustic music, Immersive soundscapes, Gentle auditory patterns, Supports sleep, focus, and calm, Gradual transitions and sustained states, Intelligent playlist flow, Flexible playback controls

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Individual Renews Monthly | $6.99 | per month |
| Family Access Renews Monthly | $10.99 | per month |
| Individual Renews Annually | $69.99 | per year |
| Family Access Renews Annually | $110.99 | per year |
| Lifetime Access to Spindles | $299.99 | one-time |


### Harmonic.Audio Tuner

[App page](https://appshunter.io/ios/app/harmonicaudio-tuner/id6749597883)

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

**In-app purchases:** none


## Frequently asked questions

### Is Spindles free?

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

### Is Harmonic.Audio Tuner free?

Harmonic.Audio Tuner is free to download, with no in-app purchases.

### Do Spindles or Harmonic.Audio Tuner have ads?

Neither Spindles nor Harmonic.Audio Tuner shows ads.

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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.*