Comparison

Aurora Zen vs Polyrhythm

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

Head to head
About

Aurora Zen

Create stunning visual displays by painting the sky with vibrant aurora ribbons. This app offers a relaxing experience, allowing users to find their zen through colorful and dynamic sky art.

Highlights
  • Paint the sky with aurora ribbons
  • Create vibrant colors and shapes
  • Relaxing and zen-like experience
  • Dynamic visual displays
  • Fill the sky with beautiful art
Features
Read full description

Paint the sky with vibrant aurora. Relax and find your zen by filling the sky with brilliant ribbons of beautiful colour and shapes.

About

Polyrhythm

Create a personalized soundscape for relaxation, sleep, or meditation. Explore a variety of organic and synthesized instruments, ambient background sounds, and AI-generated presets. Customize and save your favorite sound combinations for a tranquil experience.

Highlights
  • Variety of sound presets
  • Organic and synthesized instruments
  • Background ambient sounds
  • AI preset generator
  • Advanced preset customization
  • Create and save custom presets
Features
Read full description

When it's time for rest and relaxation, our app will become your faithful companion. Perfect for use before sleep or during meditation, it can also help soothe your child or yourself. Based on polyrhythmic sound playback, our app promises a deep immersion into the world of sounds and visualizations. Features of our app: - A variety of presets with unique moods; - Various organic and synthesized musical instruments to create the perfect atmosphere; - Background sounds including white noise, bird songs, and ocean waves; - AI preset generator for a continuous flow of inspiration; - Advanced preset customization for precise sound tuning; - Ability to create custom presets and save them to favorites. Discover the world of harmony and tranquility with our unique app - your personal oasis of calm. Also worth reading Privacy Policy: https://sites.google.com/view/castles-trip-privacy-policy. And Terms of use: https://sites.google.com/view/polyrhythm-tos

Screenshots

Aurora Zen4 screens
Polyrhythm4 screens

Verdict

The call

The clearest difference is rating: Aurora Zen at 5.0 against Polyrhythm's 2.1. Aurora Zen also leads on in-app purchases (none vs 3). Polyrhythm's advantage is update cadence (every 5 weeks vs every 11 months) and ratings volume (9 vs 1). On price, ads, 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. Polyrhythm sells 3 in-app purchases, starting at $1.99 per 7 days. Aurora Zen asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Aurora Zen holds the better App Store score, 5.0 against 2.1. That said, the two scores are not equally well evidenced: Polyrhythm has 9 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Aurora Zen ships an update every 11 months, Polyrhythm every 5 weeks. Both last shipped on November 3, 2026.

Scorecard5 real differences · 5 level
Aurora Zen versus Polyrhythm: the parameters behind the verdict, then further details
ParameterAurora ZenPolyrhythm
PriceFreeFree
Rating5.0 (1 ratings) — better2.1 (9 ratings)
Positive reviews—25.0% of reviews
Number of ratings19 — better
Update frequencyEvery 11 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size695 MB131 MB
Age rating4+4+
DeveloperVirtex Edge Design Inc.Stanislav Duplinskiy

Customer experience

Aurora Zen

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Polyrhythm

All ratings7 ratings
Positive28.6%
Neutral14.3%
Negative57.1%
Written reviews4 reviews
Positive25.0%
Neutral25.0%
Negative50.0%

In-app purchases

None

Aurora Zen

No in-app purchases

3 purchases

Polyrhythm

Subscriptions3
  • Full access to app functions$1.997 Days
  • Full access to app functions$5.991 Month
  • Full access to app functions3 Days trial$12.993 Months

Questions

Is Aurora Zen free?
Aurora Zen is free to download, with no in-app purchases.
Is Polyrhythm free?
Polyrhythm is free to download, with in-app purchases available.
Which has better reviews, Aurora Zen or Polyrhythm?
Aurora Zen is rated higher. Aurora Zen averages 5.0 out of 5 from 1 ratings, while Polyrhythm averages 2.1 from 9 ratings.
Do Aurora Zen or Polyrhythm have ads?
Neither Aurora Zen nor Polyrhythm shows ads.
Which is updated more often, Aurora Zen or Polyrhythm?
Aurora Zen ships an update every 11 months, and Polyrhythm every 5 weeks. Most recently, Aurora Zen was updated on November 3, 2026 and Polyrhythm on November 3, 2026.

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