# Frequency vs ZDC

The clearest difference is in-app purchases: ZDC at none against Frequency's 10. ZDC also leads on iOS requirement (13.0.0 vs 16). Frequency's advantage is device support. On price there is nothing between them.

Both are free to download. Frequency sells 10 in-app purchases, starting at $7.99 per month. ZDC asks for nothing beyond the download.

## The numbers

| Metric | Frequency | ZDC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (2.4K ratings)](https://appshunter.io/ios/app/frequency-healing-sounds/id684672780/reviews)** | — |
| Number of ratings | **2.4K** | — |
| Positive reviews | 84.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | Every 2 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 218 MB | 28 MB |
| Requires iOS | 16 | **13.0.0** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [BrainPower Inc](https://appshunter.io/developer/1560966870) | [Zero Doubt Club Cleveland East LLC](https://appshunter.io/developer/1625322283) |

## What reviewers say

### Frequency

[App page](https://appshunter.io/ios/app/frequency-healing-sounds/id684672780)

This app offers science-inspired sound therapy to promote natural healing and restore balance to your mind, body, and brain. It utilizes specific frequencies to aid in sleep, reduce pain, and enhance mental clarity for a holistic wellness journey.

**Highlights:** Full body healing & DNA repair, Restorative sleep support, Gentle relief for body pain, Emotional healing and clarity, High-fidelity healing frequencies, Transform any space into a sanctuary

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Daily Monthly Subscription | $7.99 | per month |
| Auto Renew Special Sale Year | $24.99 | per year |
| New User Yearly Option | $29.99 | per year |
| Trial for new in guide page | $29.99 | per year |
| Frequency Special Subscription | $29.99 | per year |
| Daily Annual Subscription | $34.99 | per year |
| Trial offer for new | $34.99 | per year |
| Yearly Subscription Trial | $35.99 | per year |
| Yearly Subscription with Trial | $39.99 | per year |
| Unlock 2 Years VIP | $29.99 | one-time |

**What reviewers like**

- 👍 Relaxing and soothing sounds
- 🚀 Helps with sleep and relaxation
- 🚀 Variety of healing frequencies
- 👍 Improves mental and physical health
- 👍 Calms the nervous system

**What reviewers complain about**

- 🐛 Occasional playback issues
- 🔒 Subscription required for full access
- 🔒 Misleading pricing information
- 🐛 Compatibility issues with some devices

**Reported bugs**

- App crashing or freezing
- Playback stopping when device goes to sleep
- Inconsistent volume and sound quality

**Requested features**

- Ability to customize frequency settings
- Option to purchase individual frequencies
- Improved search and organization of content
- Ability to play in the background while device is locked


### ZDC

[App page](https://appshunter.io/ios/app/zdc/id6758991443)

**In-app purchases:** none


## Frequently asked questions

### Is Frequency free?

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

### Is ZDC free?

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

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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.*