Comparison

PEER vs Calmness Meter

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

Head to head
About

PEER

This app facilitates EEG data recording and ERP analysis for research studies. It connects with specific EEG headsets to collect raw data and neurological study information. Recorded data can be exported for further analysis with various neuroscience tools.

Highlights
  • EEG recording and display
  • Event-Related Potential (ERP) analysis
  • Data export to Brain Vision Analyzer or .csv
  • Includes N-Back and Gambling Task games
  • Customizable image presenter
  • Searchable recordings with titles and notes
Read full description

PEER is an all-in-one EEG recording and ERP analysis App designed for research studies. PEER communicates with Brain Products X.on (Brain Products.com) EEG headset. The PEER app collects raw EEG data and EEG data arising from Event-Related Potentials (ERP) neurological studies. The PEER app maintains a collection of "recordings". Each recording has a title and notes which can be searched. PEER displays summary information about the recording (sample rates, sizes, etc.). The recorded EEG data can be exported in one of a number formats for analysis using MATLAB, BrainVision Analyzer or one of a number of other tools used by neuroscience researchers. PEER includes the following games and features: - Raw EEG recording and display - Visual Oddball (passive, one-response, two-response) - Audio Oddball (passive, one-response, two-response) - N-Back - Gambling Task - Posner - Image Presenter (select and preset custom images) - One touch ERP analysis - Export to Brain Vision Analyzer or .csv formats PEER is not a diagnostic or medical device. PEER is for research use only.

About

Calmness Meter

This app provides a real-time Calmness Score by analyzing brain signals from compatible EEG headbands. Track meditation effectiveness, adjust sessions mid-way, and receive gentle prompts to stay focused. It integrates with Apple Health for comprehensive analysis.

Highlights
  • Real-time Calmness Score
  • EEG headband integration
  • Meditation effectiveness tracking
  • Mid-session adjustments
  • Mind-wandering prompts
  • Apple Health integration
Features
Read full description

Calmness Meter analyzes brain signals from EEG headbands such as Muse S and Muse 2 to give you a simple real time Calmness Score.  You can get a better feel of how effective your meditations are over time, or even adjust mid-way through your session. The app can give you a gentle voice prompt or haptic feedback when your mind starts to drift. It can integrate with Apple Health so your meditation scores can be viewed and analyzed using iOS native tools.

Screenshots

PEER4 screens
Calmness Meter2 screens

Verdict

The call

The clearest difference is in-app purchases: Calmness Meter at none against PEER's 10. Calmness Meter also leads on update cadence (every 3 days vs every 4 months). On price, rating, ratings volume and ads 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. PEER sells 10 one-off in-app purchases. Calmness Meter asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for PEER against 5.0 for Calmness Meter. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

PEER ships an update every 4 months, Calmness Meter every 3 days. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard2 real differences · 8 level
PEER versus Calmness Meter: the parameters behind the verdict, then further details
ParameterPEERCalmness Meter
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings11
Update frequencyEvery 4 monthsEvery 3 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.617.0 — better
Further details — not scored
Size76 MB93 MB
Age rating4+4+
DeveloperBrainWave SoftwareEvergreen Labs

Customer experience

PEER

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Calmness Meter

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

In-app purchases

10 purchases

PEER

One-time10
  • N-Back TrialFree
  • Gambling Task/Doors TrialFree
  • Audio Oddball TrialFree
Show 7 more
  • Image Presenter TrialFree
  • Posner TrialFree
  • Image Presenter$499.00
  • Posner$499.00
  • Gambling Task/Doors$499.99
  • N-Back$499.99
  • Audio Oddball$499.99
None

Calmness Meter

No in-app purchases

Questions

Is PEER free?
PEER is free to download, with in-app purchases available.
Is Calmness Meter free?
Calmness Meter is free to download, with no in-app purchases.
Which has better reviews, PEER or Calmness Meter?
PEER and Calmness Meter are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do PEER or Calmness Meter have ads?
Neither PEER nor Calmness Meter shows ads.
Which is updated more often, PEER or Calmness Meter?
PEER ships an update every 4 months, and Calmness Meter every 3 days. Most recently, PEER was updated on November 3, 2026 and Calmness Meter on November 4, 2026.

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