Comparison

Headspace vs Power Analysis

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

Head to head
About

Headspace

This app offers a unique 3D approach to organizing thoughts and creating hierarchical outlines. Visualize your information in a floating space, navigate with intuitive gestures, and connect related ideas with visual links. It's designed for a dynamic and engaging way to manage lists and mind maps.

Highlights
  • Build hierarchical outlines in 3D space
  • Navigate and zoom with familiar finger gestures
  • Connect related items with link lines
  • Change item color and opacity
  • Universal app for iPhone and iPad
  • Sync files with Dropbox
  • PDF export with active note links
Features
Read full description

*** PLEASE NOTE: This NOT the meditation app! *** (There is another app called "Headspace: Guided Meditation and Mindfulness" and this is NOT that app!) This is the *original* Headspace! HEADSPACE is iOS's coolest 3D outliner and mind-mapping app! Do your list-making and mind-mapping in 3D space with the *original* Headspace. "Five stars on iPhone, completely off the scale on iPad" "This is the app I've most wanted to run on the iPad since the day it was announced, and the app that anyone looking over your shoulder will immediately want to buy an iPad just to run. " "Love the program. Favorite app. Useful and looks great. " "The implementation is beautiful! In my opinion, Headspace is becoming one of the best apps in the store." "I bought Headspace last night on a whim - been fooling around with mindmapping apps lately. This is a little piece of brilliance, you know that, right? " "This app could not just be a mindmapping program, It has the capability to become a new kind of U.I. That in my opinion that improved over apples U.I." Headspace allows you to create items and groups of items on a floating plane in three-dimensional space. The hierarchy of items and their various sub-items make for a beautiful display of information as they recede into the distance. Simple and familiar finger gestures allow you to move around the space. Use the menu button to travel between various groups. Easily create links and travel between them. The beautiful animated interface is like something from a sci-fi movie, but it isn't just eye-candy. You can go from an "eagle-eye" view of your entire map to focusing on a single item with a simple pinch of your fingers. There's just something about being able to manipulate the scale and space that goes perfectly with the idea of outlining. Here's a rundown on all its cool features: ● build hierarchical outlines in 3D space ● use familiar finger gestures to navigate and zoom ● connect related items with link lines - even between files! ● change item color and opacity ● change text color ● 'Flick' up or down to travel to top or bottom of lists ● special characters and foreign-language support ● universal app -- runs on both iphone and ipad ● easy travel between groups and files ● cut-and-paste items ● search in spaces, notes, and files ● item notes for supplemental information (text/photo/url) ● optional accelerometer rotate ● customizable color palette ● "to-do" style item checkboxes ● 2D orthogonal mode ● sync files between your iphone and iPad with Dropbox ● file support for Freemind, the free multi-platform desktop mind-mapping program ● stunning PDF export w/ active note links Get some perspective on your thoughts. Try Headspace today! Let us know what else you'd like to see added, email headspace@flatblackfilms.com!

About

Power Analysis

Design experiments and analyze data with confidence, even without extensive statistical knowledge. This app guides you through planning studies, determining necessary sample sizes, and understanding measurement quality. It supports various distribution types and automatically selects appropriate statistical tests.

Highlights
  • Guided experiment design
  • Sample size determination
  • Measurement quality assessment
  • Support for various distributions
  • Automatic statistical test selection
  • Interactive parameter adjustment
Features
Read full description

Design experiments and measurements confidently with minimal knowledge of statistics. Have you ever worried if the study you were planning would have enough data to conclude anything? Know how much data you need while you're still in the planning phase. Let the app do the statistics for you. • Easy to use interface helps you enter the pertinent information without being a statistics expert. • Know how many observations you'll need to measure what you want. • Know how good a measurement you'll get for any number of observations you set. • Visualizations • Play with sliders for key parameters and see how they affect the measurement • Supports measurements of rates and proportions (binomial distributions) in addition to continuous distributions • Chooses appropriate statistical test for you based on your experimental parameters. (Tests include t, z, chi square, and exact binomial). • Set your preferred risk of both false positives and false negatives (type I error and type II error) Can also be useful as an interactive study tool for learning about the statistics of measurement

Screenshots

Headspace4 screens
Power Analysis4 screens

Verdict

The call

The clearest difference is rating: Power Analysis at 5.0 against Headspace's 4.4. Headspace's advantage is review sentiment (71% vs 50%) and update cadence (every 2 months vs every 4 months). On ads, in-app purchases, monetization model 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

Headspace costs $3.99 and Power Analysis $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Power Analysis holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 10 and 3 respectively. Written reviews complicate that: 71% of Headspace's written reviews are positive against 50% of Power Analysis's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Headspace ships an update every 2 months, Power Analysis every 4 months. The most recent releases landed on October 18, 2026 and October 9, 2026 respectively.

Scorecard5 real differences · 5 level
Headspace versus Power Analysis: the parameters behind the verdict, then further details
ParameterHeadspacePower Analysis
Price$3.99 — better$4.99
Rating4.4 (10 ratings)5.0 (3 ratings) — better
Positive reviews71.4% of reviews — better50.0% of reviews
Number of ratings10 — better3
Update frequencyEvery 2 months — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.09.0
Further details — not scored
Size19 MB3 MB
Age rating4+4+
DeveloperFlat Black FilmsA&X Analytics, LLC

Customer experience

Headspace

All ratings10 ratings
Positive90.0%
Neutral0.0%
Negative10.0%
Written reviews182 reviews
Positive71.4%
Neutral12.6%
Negative15.9%

Power Analysis

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews8 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Bugs and requests

Headspace

Reported bugs

15 issues
  • App crashes on creating new groups
  • Crashes when entering text on iPad
  • Text color picker fails to change colors
  • Instant crash when closing text color picker
  • Crashes on Dropbox connection
Show 10 more
  • Data loss with file format updates
  • Existing links lost after updates
  • Screen flickers between files
  • Text display issues after multiple app launches
  • Color brightness settings lost
  • Keyboard popup without dialog box
  • Accelerometer causes erratic screen movement
  • Incompatibility with iOS/iPadOS updates
  • Performance lag with large maps
  • Syncing issues between devices

Requested features

24 requests
  • Desktop/Mac version for syncing
  • iCloud syncing between iOS devices
  • Google Drive and OneDrive support
  • Evernote integration
  • Ability to drag items between groups
Show 19 more
  • Undo functionality
  • Export to email directly
  • Different arrow/connector styles
  • OPML export format
  • Reminders and deadline notifications
  • Different text box shapes
  • Photo/image import and support
  • Web-based version
  • Ability to move items outside groups
  • Simpler gesture controls for text entry
  • List view option
  • Icons and visual indicators for content types
  • Advanced search functionality
  • Child count indicators on parent nodes
  • Customizable 3D graphics
  • Movie recording with preset paths
  • Structured data visualization capabilities
  • Automatic color selection for new groups
  • Bullet points for children items

Power Analysis

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Headspace

No in-app purchases

None

Power Analysis

No in-app purchases

Questions

Is Headspace free?
Headspace costs $3.99, with no in-app purchases.
Is Power Analysis free?
Power Analysis costs $4.99, with no in-app purchases.
Which has better reviews, Headspace or Power Analysis?
Power Analysis is rated higher. Headspace averages 4.4 out of 5 from 10 ratings, while Power Analysis averages 5.0 from 3 ratings.
Do Headspace or Power Analysis have ads?
Neither Headspace nor Power Analysis shows ads.
Which is updated more often, Headspace or Power Analysis?
Headspace ships an update every 2 months, and Power Analysis every 4 months. Most recently, Headspace was updated on October 18, 2026 and Power Analysis on October 9, 2026.

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