Comparison

Ooooo vs Mudrana

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

Head to head
About

Ooooo

This app generates binaural beat audio waves to help you achieve specific mind-states like sleep, meditation, or energy. It offers a simple, offline experience without ads or in-app purchases, and includes an Apple Watch app for convenience.

Highlights
  • Binaural beat audio generation
  • Supports sleep, meditation, relaxation, and energy states
  • Offline functionality
  • No ads or in-app purchases
  • Apple Watch app included
  • Optional white/brown noise masking
Features
Read full description

This is a straightforward app to help you achieve a chosen mind-state by generating what are known as "binaural beat audio waves" through your headphones, either from your iOS device or your Apple Watch. Depending on the frequency that you pick, based on the chart included in the app, it can potentially help with sleep, meditation, relaxation, or even for getting a short burst of energy. I have used similar apps for a while and have found them useful in helping me relax, or helping me float into a creative mood - Except most are overloaded with features that I never use and also cost money, have in-app purchases for "special programmes" and so on. So I decided to build one that does the same, works offline, has no ads or spying, works well, and is free. There's also an Apple Watch app included which you can use if you're mediating or relaxing away from your phone. As such, this app just generates the binaural frequency audio hum, and some optional white or brown noise to help mask outside sounds. You can then put it in the background and combine its audio with any other sound generator you like, or play music, radio, and so forth. All it does is to create the useful brainwave frequency, and then it gets out of your way.

About

Mudrana

Features
Read full description

Rediscover your centre in just a few minutes. Mudrana is your space for grounding, designed to support those moments when you need calm, clarity or renewed energy. The app offers simple and accessible micro-sessions based on mudras, guided breathing, intentions and meditative sounds. Each practice is crafted to fit within a few minutes, giving you a moment of presence even on the busiest days. What you’ll find in Mudrana: Mudras selected for their benefits (confidence, energy, soothing, focus, etc.) Micro-practices you can repeat at any time of day Harmonised ambient sounds (Tibetan bowl, specific frequencies) A clean, gentle and zen-inspired design An experience with no account, no advertising, and no distractions Mudrana was created with the intention of offering a simple, minimalist and caring tool — a small space to breathe, recentre yourself, and move forward with greater serenity. New practices, sounds and themes will be added over time. For more information: https://www.mudrana.ch/index.en.html

Screenshots

Ooooo1 screens
Mudrana3 screens

Verdict

The call

The clearest difference is price: Ooooo at Free against Mudrana's $4.99. Mudrana's advantage is iOS requirement (15.0 vs 26.0). On update cadence, ads, in-app purchases and device support 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

Ooooo is free to download; Mudrana costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on October 22, 2026 and October 12, 2026 respectively.

Scorecard2 real differences · 8 level
Ooooo versus Mudrana: the parameters behind the verdict, then further details
ParameterOooooMudrana
PriceFree — better$4.99
Rating4.8 (123 ratings) — better—
Positive reviews95.9% of reviews—
Number of ratings123 — better—
Update frequencyEvery 5 monthsEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, Mac, Apple Watch — betteriPhone, iPad, iPod
Requires iOS26.015.0 — better
Further details — not scored
Size1 MB85 MB
Age rating4+4+
DeveloperPavlos TsochantarisJohann Aeschlimann

Bugs and requests

Ooooo

Reported bugs

4 issues
  • App closes when phone goes to sleep or switches apps (needs background capability)
  • Frequency displayed does not match actual played frequency
  • Slider caps out at 500hz for some users
  • Stereo may not be working correctly for some users

Requested features

18 requests
  • Higher mhz frequencies
  • Numerical input for precision
  • Green Noise option
  • Program sequences of beats and transitions (auto-pilot)
  • Dial into specific frequencies to the thousandth decimal point
Show 13 more
  • Saved presets with labels
  • Ability to create automated presets with frequency changes over time
  • Full shortcut support
  • Add 40hz magic
  • Add pink noise
  • Add 0 frequency option to the watch
  • Add soft music or repetitive long tones, beach waves
  • Add the six main solfeggio frequencies (396 Hz, 417 Hz, 528 Hz, 639 Hz, 741 Hz, 852 Hz)
  • Add a sleep timer
  • Add a list of binaural frequency range names and definitions
  • Dual- or multi-frequency sliders
  • Add plus/minus buttons for fine-tuning frequencies
  • AirPlay 2 support

Mudrana

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Ooooo

No in-app purchases

None

Mudrana

No in-app purchases

Questions

Is Ooooo free?
Ooooo is free to download, with no in-app purchases.
Is Mudrana free?
Mudrana costs $4.99, with no in-app purchases.
Do Ooooo or Mudrana have ads?
Neither Ooooo nor Mudrana shows ads.
Which is updated more often, Ooooo or Mudrana?
Ooooo ships an update every 5 months, and Mudrana every 5 months. Most recently, Ooooo was updated on October 22, 2026 and Mudrana on October 12, 2026.

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