Best 639App Apps

29+ iOS apps curated and reviewed

4.5 avg rating
19 free apps
Updated June 2026

Every iPhone needs a few good 639app apps. We benchmark 29+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top 639App Apps (June 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1639Hertz - app de conexão639Hertz - app de conexãoFreeNoYesSep 2026
2Healing Frequency Sleep SoundsHealing Frequency Sleep SoundsFree4.8★ (2.2K)YesYesSep 2026
3Binaural Beats Healing SleepBinaural Beats Healing SleepFree4.8★ (3.3K)YesYesSep 2026
4Frequency Healing Sounds HertzFrequency Healing Sounds HertzFree4.9★ (1.4K)NoYesSep 2026
5Solfeggio Heart Chakra 639 HzSolfeggio Heart Chakra 639 HzFree5.0★ (1)YesYesAug 2026
6Endress+Hauser SmartBlueEndress+Hauser SmartBlueFree4.1★ (9)NoNoMay 2026
7PlayMemories Mobile ConnectPlayMemories Mobile ConnectFree1.3★ (77)NoYesSep 2026
8Sleep Sounds by SleepableAISleep Sounds by SleepableAIFree4.8★ (37)NoYesSep 2026

Top Picks for 639App

Healing Frequency Sleep Sounds#2

Healing Frequency Sleep Sounds by Deep Space Limited

Binaural Beats,ADHD Brainwaves
Strong Contender
🎵 Music
4.8😐(2.2K ratings)
FreeAdsIn-App Purchases
Healing Frequency Sleep Sounds screenshot 1
Healing Frequency Sleep Sounds screenshot 2
Healing Frequency Sleep Sounds screenshot 3
Healing Frequency Sleep Sounds screenshot 4
Healing Frequency Sleep Sounds screenshot 5
Healing Frequency Sleep Sounds screenshot 6

This app uses advanced audio technology to create binaural beats designed to improve sleep, enhance focus, reduce anxiety, and promote spiritual exploration. It offers a variety of curated sessions for relaxation, healing, and mood elevation.

What We Love

  • 💤 Helps with sleep
  • 🧠 Improves focus and relaxation
  • 🎧 Enjoyable sound tracks
  • 👍 Affordable and accessible

Room to Improve

  • 🐛 Inconsistent and buggy performance
  • 🔇 Limited sound options
  • 🤔 Unclear subscription details
  • 🔍 Difficulty with settings and support
Binaural Beats Healing Sleep#3

Binaural Beats Healing Sleep by Better Sleep Rise Elite

Sleep Sounds & ADHD Brainwaves
Worth Considering
🎵 Music
4.8😊(3.3K ratings)
FreeAdsIn-App Purchases
Binaural Beats Healing Sleep screenshot 1
Binaural Beats Healing Sleep screenshot 2
Binaural Beats Healing Sleep screenshot 3
Binaural Beats Healing Sleep screenshot 4
Binaural Beats Healing Sleep screenshot 5
Binaural Beats Healing Sleep screenshot 6

Enhance sleep quality and focus with scientifically designed brainwave soundscapes. Explore a library of premium audio tracks and healing frequencies to quiet your mind, reduce anxiety, and promote relaxation.

What We Love

  • 🌙 Helps with sleep
  • 🧘‍♀️ Calming and relaxing
  • ⏱️ Timer and alarm features
  • 📱 Easy to use interface

Room to Improve

  • 💰 Paid access required for full features
  • 🔀 Limited sound variety in free version
  • 🔌 Occasional app crashes or freezes

More 639App apps to explore

FAQ about 639App

Are there free 639app apps for iPhone?
Yes — 19 of the top 639app apps we rank are free to download, including 639Hertz - app de conexão and Healing Frequency Sleep Sounds.
639Hertz - app de conexão has no ads and offers in-app purchases, according to its App Store listing as of June 2026.
We track 29+ 639app apps on the iOS App Store as of June 2026, ranked by rating, recency, and analysis of real user reviews.
639Hertz uses an 'AstroAlgorítmo' that crosses users' birth charts to find astrological compatibility. The focus is on connecting based on who you are, not how you look.
No, 639Hertz intentionally does not use photos as a criterion for matching. The app emphasizes connecting based on essence and personality.