Comparison

Bellabee PRO vs Z

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

Head to head
About

Bellabee PRO

This app uses brainwave entrainment technology to help you achieve desired mental states. It acts as a digital metronome, guiding your mind and body to work in harmony for stress relief, improved concentration, and better meditation.

Highlights
  • Brainwave entrainment technology
  • Digital metronome
  • State of mind selection
  • Stress relief
  • Concentration improvement
  • Meditation aid
Read full description

Brainwave entrainment (BWE) technology, which uses rhythmic stimuli to alter brainwave frequency and thus brain states, has been investigated and used since the late 1800s, yet many clinicians and scientists are unaware of its existence. Bellabee is such a device, tested and used worldwide, an active digital metronome which you control, choosing your preferred state of mind and allowing the device to suggest how your mind should behave and the rhythm at which it operates. It’s a personal assistant which coaxes your mind and body to work in tandem as you would like them to. It’s 100% safe, effective and very easy to use. We’re going to cover how it works, and why so many people are choosing this particular device to find harmony, relieve stress, improve meditation and concentrate. It doesn’t need batteries or re-charging, it simply plugs into the headphone socket on your smartphone or tablet. Using an app, you can choose the signal frequency that’s best suited to what you want to achieve.

About

Z

Generate audio frequencies for personal wellness and experimental use. Explore over 1300 sequences for frequency-based practices on your mobile device. This app is for wellness exploration and is not a medical device.

Highlights
  • Rife frequency generator
  • Over 1300 sequences
  • Audio frequency generation
  • Wellness exploration
  • Mobile and tablet use
Read full description

Z-App is a rife frequency generator designed to generate audio frequencies for wellness. With over 1300 sequences, it allows users to explore frequency-based wellness practices right on their phone or tablet. Disclaimer: Z-App is intended for personal wellness and experimental use only. It is not intended to diagnose, treat, cure, or prevent any medical condition. The frequency lists provided are based on anecdotal and alternative wellness traditions and are not supported by medical evidence. Always consult a healthcare professional before using the app, especially if you have any health concerns. This app should not be used as a substitute for professional medical advice or treatment. Use of the app is at your own discretion.

Screenshots

Bellabee PRO3 screens
Z4 screens

Verdict

The call

The clearest difference is rating: Z at 4.8 against Bellabee PRO's 4.1. Z also leads on review sentiment (83% vs 55%) and ratings volume (517 vs 19). Bellabee PRO's advantage is iOS requirement (11.0 vs 16.0). 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Z holds the better App Store score, 4.8 against 4.1. That said, the two scores are not equally well evidenced: Z has 517 ratings behind it against 19, so its average is the more settled of the two. Written reviews point the same way: 55% of Bellabee PRO's written reviews are positive against 83% of Z's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
Bellabee PRO versus Z: the parameters behind the verdict, then further details
ParameterBellabee PROZ
PriceFreeFree
Rating4.1 (19 ratings)4.8 (517 ratings) — better
Positive reviews54.5% of reviews83.3% of reviews — better
Number of ratings19517 — better
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad
Requires iOS11.0 — better16.0
Further details — not scored
Size13 MB17 MB
Age rating4+17+
DeveloperImplementacija snova LtdAllt Hitt ehf

Customer experience

Bellabee PRO

All ratings19 ratings
Positive73.7%
Neutral10.5%
Negative15.8%
Written reviews11 reviews
Positive54.5%
Neutral9.1%
Negative36.4%

Z

All ratings379 ratings
Positive94.2%
Neutral3.4%
Negative2.4%
Written reviews126 reviews
Positive83.3%
Neutral7.9%
Negative8.7%

Bugs and requests

Bellabee PRO

Not enough reviews yet to summarise bugs or requests.

Z

Reported bugs

5 issues
  • Freezing during session
  • Stopping playback when interrupted
  • Compatibility issues with newer OS
  • Lack of TMJ frequency
  • Unexpected volume adjustments

Requested features

6 requests
  • Sawtooth tone
  • Multiple frequencies
  • Play controls
  • Dark mode
  • Back button
Show 1 more
  • Users manual

In-app purchases

None

Bellabee PRO

No in-app purchases

None

Z

No in-app purchases

Questions

Is Bellabee PRO free?
Bellabee PRO is free to download, with no in-app purchases.
Is Z free?
Z is free to download, with no in-app purchases.
Which has better reviews, Bellabee PRO or Z?
Z is rated higher. Bellabee PRO averages 4.1 out of 5 from 19 ratings, while Z averages 4.8 from 517 ratings.
Do Bellabee PRO or Z have ads?
Neither Bellabee PRO nor Z shows ads.
Which is updated more often, Bellabee PRO or Z?
Bellabee PRO ships an update every 2 months, and Z every 2 months. Most recently, Bellabee PRO was updated on November 2, 2026 and Z on November 3, 2026.

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