---
title: "639hz Solfeggio Sonic Meditation by Glenn Harrold & Ali Calderwood — App Overview"
url: https://marlvel.ai/apps/639hz-solfeggio-sonic-meditation-by-glenn-harrold
category: Health & Fitness
developer: Glenn Harrold Publishing Ltd
platforms: ios
rating: 4.7 (15 ratings)
pricing: paid
report_level: overview
generated: 2026-04-27
last_verified: "2026-04-27T09:26:31.031Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** This app combines Solfeggio frequency sound therapy with guided hypnosis to support emotional health and sleep hygiene.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Health & Fitness |
| Rating | 4.7 ★ (15) |
| Pricing | paid |
| Platforms | iOS |
| Latest Version (iOS) | 1.2 |
| Developer | Glenn Harrold Publishing Ltd |

<!-- SECTION: Summary -->
## What is 639hz Solfeggio Sonic Meditation by Glenn Harrold & Ali Calderwood?

639hz Solfeggio Sonic Meditation is a guided audio app by Glenn Harrold and Ali Calderwood designed to promote emotional stability and relationship harmony. It utilizes the 639 Hz Solfeggio frequency to assist users in addressing issues related to self-love, loneliness, and interpersonal balance.

<!-- SECTION: Key Features -->
## Key Features

- **Solfeggio Frequency Audio**: Features meditation tracks based on the 639 Hz frequency intended to harmonize relationships and perceptions of love.
- **Daytime Meditation Track**: Includes a guided session designed to return the user to full waking consciousness for use during the day.
- **Sleep-Inducing Track**: Provides a secondary track specifically structured to guide the user into a deep sleep state.
- **Guided Affirmations**: Incorporates spoken affirmations to support the user's focus on emotional balance and self-acceptance.

<!-- SECTION: Target Audience -->
## Who is it for?

Individuals seeking guided meditation and sound therapy to improve emotional well-being and sleep quality.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/639hz-solfeggio-sonic-meditation-by-glenn-harrold-ali/id512394586?uo=4)
- [Full Intelligence Report](https://marlvel.ai/apps/639hz-solfeggio-sonic-meditation-by-glenn-harrold)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/639hz-solfeggio-sonic-meditation-by-glenn-harrold).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*