Comparison

Hemi vs HZP (Hertz Player)

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Hemi

Explore consciousness with a curated selection of audio tracks. Access over 300 titles, including guided exercises, and create custom soundscapes. Meditate, sleep, concentrate, or relax with this comprehensive audio experience.

Highlights
  • Curated audio library
  • Over 300 titles
  • Gateway Experience exercises
  • Custom track mixer
  • Free DailySync feature
  • Meditate, sleep, concentrate, relax
Features
Currently charting
Read full description

Your Gateway to Exploration: All in One App Hemi-Sync® Flow offers a thoughtfully curated selection from our extensive library, making it the perfect starting point for those new to consciousness exploration or seeking a focused experience. Access over 300 titles from the Hemi-Sync® library, including six acclaimed Gateway Experience® exercises, from your mobile device for one low monthly subscription rate. Create custom Hemi-Sync® tracks using our mixer feature, and enjoy our free DailySync feature, which plays one track per day. Take charge of your own mental health. Meditate, sleep, concentrate or simply relax with ease.

About

HZP (Hertz Player)

Transform your existing music library by re-tuning it to 432 Hz and Solfeggio frequencies in real-time. This app offers an immersive audio-visual experience, allowing users to relax, focus, or elevate their mood with personalized soundscapes. It integrates seamlessly with your Apple Music and includes a free catalog of ambient sounds and guided meditations.

Highlights
  • Real-time frequency re-tuning (432 Hz, Solfeggio)
  • Audio-responsive music visualizer
  • Apple Music integration
  • Free Audius music catalog
  • Relaxation and focus soundscapes
  • Sleep timer and bulk playlist creation
Features
Read full description

Re-tune the music you already love to 432 Hz and the Solfeggio frequencies — in real time, in one tap. Trusted by over 25,000 sound, energy & frequency enthusiasts worldwide. You already choose the quality of the food you eat, the water you drink, and the air you breathe. Now you can choose the quality of the audio frequencies your mind, body & soul absorb every day. Imagine your entire music collection re-tuned to any Solfeggio Frequency or the "magical earth tone," 432 Hz — at the click of a button. HZP infuses the music you already listen to with the sound and feel of the 432 Hz and Solfeggio world, instantly. + Save thousands of hours converting music files + Save hundreds of dollars re-buying tracks + Enjoy unlimited real-time frequency re-tuning + No duplicate files or hard-drive clutter + Works on your iPhone, Mac, CarPlay & Apple TV + No technical skills required — zero learning curve Re-tune any song to any Solfeggio Frequency and 432 Hz with no downloading, sorting, or converting. Just press play. — WHAT LISTENERS LOVE IT FOR — + Winding down and relaxing + Setting the mood for meditation & yoga + Getting in the zone for focus & creativity + Creating a calm, unwinding atmosphere at home + Supporting a personal sound & energy practice + Raising your vibration + Elevating everyday listening — CONNECT TO YOUR APPLE MUSIC ACCOUNT — + Automatically import all of the music you own + Enjoy Apple Music playlists — FREE AUDIUS MUSIC CATALOG INCLUDED — + Pure-tone Solfeggio frequencies + Hours of guided meditations + Hour-long DJ sets for workouts & parties + Relaxation, study & focus music + White noise, ASMR & background sound + Nature sounds: rain, waterfalls, birdsong, crackling fire & more — AUDIO-RESPONSIVE MUSIC VISUALIZER — Pick your music, set your frequency, and watch it come to life. + Experience your music in a whole new audio-visual way + Mesmerizes kids and adults alike + A hit with friends — fills the room with delight + "Turns any song into an animated music video!" — MADE FOR THE WAY YOU LISTEN — + Favorites: tap the heart to save any song and find it again fast + Bulk playlists: build lists from entire folders and artists in seconds + Sleep timer: set a countdown and let the music stop on its own + Sort by duration: instantly find long, uninterrupted tracks and DJ sets for hikes, workouts, meditation and more + Share: send friends and fans a track in the exact frequency you love — visualizer included "HZP is a revolution in music technology!" Download HZP and start hearing your music at 432 Hz and the Solfeggio frequencies today. HZP is a music player for entertainment and relaxation. It is not a medical device and is not intended to diagnose, treat, cure, or prevent any condition. Frequency and sound-healing experiences are subjective and vary from person to person. Terms of service: https://hzp.co/terms/ Privacy policy: https://hzp.co/privacy/

Screenshots

Hemi4 screens
HZP (Hertz Player)4 screens

Verdict

The call

The clearest difference is monetization model: HZP (Hertz Player) at free with in-app purchases against Hemi's subscription. HZP (Hertz Player) also leads on review sentiment (59% vs 32%) and device support (4 vs 2). Hemi's advantage is rating (4.4 vs 3.9) and ratings volume (2.6K vs 111). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Hemi sells 2 in-app purchases, starting at $14.99 per month and HZP (Hertz Player) sells 6 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Hemi holds the better App Store score, 4.4 against 3.9. That said, the two scores are not equally well evidenced: Hemi has 2.6K ratings behind it against 111, so its average is the more settled of the two. Written reviews complicate that: 32% of Hemi's written reviews are positive against 59% of HZP (Hertz Player)'s, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Hemi ships an update every 2 weeks, HZP (Hertz Player) fortnightly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard6 real differences · 5 level
Hemi versus HZP (Hertz Player): the parameters behind the verdict, then further details
ParameterHemiHZP (Hertz Player)
PriceFreeFree
Rating4.4 (2.6K ratings) — better3.9 (111 ratings)
Positive reviews32.2% of reviews59.0% of reviews — better
Number of ratings2.6K — better111
Update frequencyEvery 2 weeks — betterFortnightly
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
Best chart rank#174 — better—
DevicesiPhone, iPodiPhone, iPad, Mac, Apple TV — better
Requires iOS15.0 — better16.6
Further details — not scored
Size94 MB97 MB
Age rating4+12+
DeveloperInterstate Industries, Inc.SYQEL INC

Customer experience

Hemi

All ratings2,527 ratings
Positive82.9%
Neutral3.5%
Negative13.6%
Written reviews171 reviews
Positive32.2%
Neutral7.6%
Negative60.2%

HZP (Hertz Player)

All ratings111 ratings
Positive68.5%
Neutral10.8%
Negative20.7%
Written reviews39 reviews
Positive59.0%
Neutral15.4%
Negative25.6%

User reviews

Hemi

From 2.6K App Store ratings

What we love

  • 🌟 Helpful for meditation and mental health
  • 🔊 High-quality audio
  • 💻 Broad selection of content
  • 🕰️ Useful for daily routines

Room to improve

  • 🐛 Frequent crashes and bugs
  • 🤔 Confusing navigation and organization
  • 💰 Expensive subscription
  • 📼 Limited access to full-length tracks
  • 🔍 Lack of clear information about content

HZP (Hertz Player)

From 111 App Store ratings

What we love

  • 💡 Innovative frequency tuning
  • 🎶 Great music experience
  • ✨ Sleek design and UI
  • 🧘‍♀️ Improves well-being
  • 🎧 High-quality audio output

Room to improve

  • 💸 Deceptive subscription traps
  • 💰 Price increases
  • 🚫 Can't change frequency without pay
  • ⚠️ Developer unresponsiveness
  • 📉 Limited song access

Bugs and requests

Hemi

Reported bugs

4 issues
  • Audio playback issues and abrupt stops
  • Login and account syncing problems
  • Compatibility issues on certain devices
  • Glitches in the app's core functionality

Requested features

4 requests
  • Offline listening capability
  • Better progress tracking and personalization
  • Improved search and filtering options
  • More detailed track descriptions

HZP (Hertz Player)

Reported bugs

14 issues
  • App doesn't work
  • Gets stuck in 'select music' section
  • Continue button unresponsive
  • Doesn't work at all after registration
  • App is buggy
Show 9 more
  • Crashes
  • Doesn't play music
  • Unable to retrieve songs from library
  • Freezes
  • Consistently crashing
  • Not playing many songs
  • App crashes immediately when choosing a song
  • App crashes when trying to play a song
  • Updates are finicky

Requested features

6 requests
  • Add back Apple Music support
  • Fix one song at a time playback with Apple Music
  • Offline listening capability
  • Improve UI and user-friendliness
  • Add playlist saving
Show 1 more
  • Add play all/shuffle from playlist functionality

In-app purchases

2 purchases

Hemi

Subscriptions2
  • Monthly Subscription7 Days trial$14.991 Month
  • Annual Subscription7 Days trial$89.991 Year
6 purchases

HZP (Hertz Player)

Subscriptions6
  • HZP Core - Monthly$2.991 Month
  • HZP Re:tune - Monthly$9.991 Month
  • HZP Amplify - Monthly$19.991 Month
Show 3 more
  • HZP Core - Yearly$29.991 Year
  • HZP Re:tune - Yearly$99.991 Year
  • HZP Amplify - Yearly$199.991 Year

Questions

Is Hemi free?
Hemi is free to download, with in-app purchases available.
Is HZP (Hertz Player) free?
HZP (Hertz Player) is free to download, with in-app purchases available.
Which has better reviews, Hemi or HZP (Hertz Player)?
Hemi is rated higher. Hemi averages 4.4 out of 5 from 2.6K ratings, while HZP (Hertz Player) averages 3.9 from 111 ratings.
Do Hemi or HZP (Hertz Player) have ads?
Neither Hemi nor HZP (Hertz Player) shows ads.
Which is updated more often, Hemi or HZP (Hertz Player)?
Hemi ships an update every 2 weeks, and HZP (Hertz Player) fortnightly. Most recently, Hemi was updated on November 2, 2026 and HZP (Hertz Player) on November 3, 2026.

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