Comparison

Rejuvenation Science vs Harmony Playground

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

Head to head
About

Rejuvenation Science

Features
Read full description

Congratulations on finding the Personal Wellness Assistant exposing rare secrets to longevity. This app was created to help you re-discover balance, harmony, and radiant health! Inside you will find knowledge that is hard to come across, and quite valuable for anyone who is undergoing physical/mental/spiritual imbalance and dis-ease and wanting to heal, or that is wanting to slow, or even REVERSE, the aging process. We share tips, tricks, and bio-hacks for cultivating Vital Energy in order to heal body and mind, heal our emotions, anti-aging and longevity, spiritual awakening, and more. We have gathered the pure essence and healing wisdom from various medicine and spiritual traditions around the world, and have seen countless clients benefit from these teachings and practices, that we decided to create a mobile app to allow access to a greater audience. If you are suffering from pain and health challenges around food and diet, undergoing chronic stress or trauma, anxiety, anger, depression, low energy, signs of rapid aging, deterioration in mental or physical strength and vitality...or if you consider yourself healthy, maybe you are unsure of a clear way to uncover your Spiritual Nature more, or that you are not accessing the level of Spiritual Clarity, Consciousness and Vitality you seek, this app is for you and we are here to help! The courses you will find within the app are designed to help you learn how to first correct imbalances and disorders that are directly undermining the accumulation of Vital Energy, and causing dis-ease, aging, and deterioration. We are confident that with the information we share, you will experience immediate relief from all sorts of symptoms, and a return to your baseline state of ease, contentment, and joy. Going further, we share information that is on the cutting edge of modern research, regarding the "science" of Energy Cultivation, that is found across all major Spiritual Traditions. In order to make the leap into greater Spiritual Awareness we need a LOT of energy, and here at Rejuvenation Science, we have discovered that there is a sort of "physics" to energy cultivation, and to the spiritual awakening process. By subscribing to the paid courses you will gain access to all kinds of hidden knowledge gems from each of these spiritual traditions, with weekly updates that include different physical and mental exercises that you might find beneficial, food recipes or suggestions for certain imbalances or problems, herbs and plant remedies for common disorders, secret teachings, videos, stories and more. You will also gain access to user forums with open discussions with our leading Experts on all sorts of topics, ranging from natural solutions to permanently fixing various health problems, to how to cultivate more physical and spiritual vitality. Our goal at Rejuvenation Science is to help you discover your own inner healer. INFORMATION ABOUT THE APP AND PURCHASE OPTIONS By signing up, you will get access to subscription(s) that include features such as progress tracking, and offline sync. The download of Rejuvenation Science is free of charge. Should you use Rejuvenation Science app to access in-app content via available one-time purchase(s), a payment will be charged to your credit card once. Read our full Terms of Service and our Privacy Policy: https://passion.io/terms-of-service https://passion.io/privacy-policy

About

Harmony Playground

This app offers healing music, soundscapes, and meditations designed to enhance well-being. It utilizes advanced audio technology and human-composed tracks to improve focus, sleep, and energy levels. It's suitable for individual use and for professionals supporting client healing spaces.

Highlights
  • Immersive 3D Spatial Audio
  • Psychoacoustic sound design
  • Human-composed healing tracks
  • Customizable playlists
  • Commercial use licensing
  • Environmental donations
Features
Read full description

Harmony Playground creates healing music, soundscapes and meditations designed to optimize your health and wellness practices. THE SOUND • Listen in stereo or fully immersive 3D Spatial Audio. • Advanced psychoacoustics, harmonic overtones, subsonic and hypersonic frequencies deepen and improve mental clarity, focus, energy, healing and sleep states. • Every track is lovingly created by human composers, master musicians and the world's finest Spatial Audio engineers. FOR THE INDIVIDUAL • Experience more inspired yoga, deeper meditation, transcendent healing ceremony, life-changing psychedelic therapy, energizing breath work, empowering physical therapy, massage, optimal sleep and sublime immersive listening. • Create and customize playlists or rely on curated playlists to inspire your healing rituals. FOR THE PROFESSIONAL • Designed to support health and wellness practitioners, therapists, yoga studios and other enterprises interested in crafting healing spaces for their clients… including hotel lobbies, cafes or any other conscious public space. • All tracks and playlists are licensed for commercial use for subscribing businesses. FOR THE EARTH • For every new subscriber, Harmony Playground donates $5 to direct environmental action for oceans, soil, clean air, forests, fresh water, and wildlife. SUBSCRIPTION LEVELS Free unlimited access for one week. • Harmony Playground Essential: $14/month or $139/yearly — Unlimited access. One stream. Ideal for the individual. • Harmony Playground Pro: $36/month or $359/yearly — Unlimited access. Five simultaneous streams. Ideal for families or small businesses. Enterprise solutions and affiliate partnerships available upon request. Terms and Conditions: https://harmonyplay.app/terms-and-conditions Privacy Policy: https://harmonyplay.app/privacy/

Screenshots

Rejuvenation Science3 screens
Harmony Playground4 screens

Verdict

The call

The clearest difference is in-app purchases: Rejuvenation Science at none against Harmony Playground's 4. Harmony Playground's advantage is ads (none vs shown) and update cadence (fortnightly vs every 5 months). On price, device support and iOS requirement 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. Harmony Playground sells 4 in-app purchases, starting at $14.00 per month. Rejuvenation Science asks for nothing beyond the download.

UpkeepUpdate frequency

Rejuvenation Science ships an update every 5 months, Harmony Playground fortnightly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 7 level
Rejuvenation Science versus Harmony Playground: the parameters behind the verdict, then further details
ParameterRejuvenation ScienceHarmony Playground
PriceFreeFree
Rating—5.0 (4 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—4 — better
Update frequencyEvery 5 monthsFortnightly — better
AdsYesNo — better
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size75 MB499 MB
Age rating4+4+
DeveloperDouglas De BeckerHarmony Playground Co. LLC

In-app purchases

None

Rejuvenation Science

No in-app purchases

4 purchases

Harmony Playground

Subscriptions4
  • Essential Monthly7 Days trial$14.001 Month
  • Pro Monthly7 Days trial$36.001 Month
  • Essential Yearly7 Days trial$139.001 Year
Show 1 more
  • Pro Yearly7 Days trial$359.001 Year

Questions

Is Rejuvenation Science free?
Rejuvenation Science is free to download, with no in-app purchases.
Is Harmony Playground free?
Harmony Playground is free to download, with in-app purchases available.
Do Rejuvenation Science or Harmony Playground have ads?
Rejuvenation Science shows ads; Harmony Playground does not.
Which is updated more often, Rejuvenation Science or Harmony Playground?
Rejuvenation Science ships an update every 5 months, and Harmony Playground fortnightly. Most recently, Rejuvenation Science was updated on November 3, 2026 and Harmony Playground on October 30, 2026.

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