Comparison

HemiStim vs W Card Sorting Test

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

Head to head
About

HemiStim

This app offers visual stimulation for specific brain lobes, aiding in hemispheric connectivity. It utilizes color patterns and eye-tracking exercises for targeted left or right brain stimulation, controllable via simple taps and swipes. Therapy sessions are automatically tracked and can be emailed to clinicians.

Highlights
  • Visual stimulation of frontal, parietal, occipital, temporal lobes
  • Hemispheric brain stimulation
  • Color pattern selection
  • Eye tracking for saccadic and pursuit movements
  • Adjustable blink rate and timer
  • Automatic therapy session tracking
  • Clinician-patient email communication
Features
Currently charting
Read full description

Hemistim can be used as a visual stimulation of areas of the frontal, parietal, occipital, and temporal lobes hemispherically. It is a specific brain stimulation which is rarely used in conjunction with other treatments but can be used as a portion of a home-based program or an office-based program. Such usage may lead to improved hemispheric connectivity specific, targeted areas of the brain and its connections to the parietal/temporal or frontal cortices. Hemistim provides a visual stimulation through utilizing color patterns and eye tracking that can be used for specific left or right visual exercise. The stimulus is recognized and  interpreted by the contralateral (opposite) occipital lobe. Pursuit and saccadic eye movements are created by targeting on the moving object. Pursuit away from and saccade towards the alternating squares are initiated by the ipsilateral (same side) parietal and frontal cortex, respectively.  This gives the doctor the ability to work the frontal, parietal, occipital, and temporal lobes hemispherically.  HemStim is easy to use. Swipe left or right to select a different colored pattern. Multiple patterns are available. Tap a pattern to make it begin blinking. The pattern will blink until the timer stops it. Double tapping the pattern will also make it stop. The blink rate and timer can be changed using the sliders. Target motion is controlled by the tapping the small target to the right of the speed control. Choose among no motion, saccade, and pursuit by successive taps on the small target. Exterior motion is indicated by purple arrows on the target and interior motion by white arrows. The new Saccades screen only displays target motion. Drag the purple target with one finger to set the direction and length of its motion. Tap the screen once simultaneously with two fingers to switch between saccades, a dashed line, and pursuits, a solid line. Tap the screen once with one finger to start the saccades or pursuits. Double tap the screen with one finger to stop the target motion. HemiStim automatically tracks therapy sessions, recording all pertinent information about each one. Maintain close communication between clinician and patient via email.

About

W Card Sorting Test

This application is a digital tool for administering the Wisconsin Card Sorting Test (WCST). It helps assess executive functions like abstract thinking and strategic planning by having users sort cards based on changing principles.

Highlights
  • Assesses perseveration and abstract thinking
  • Measures executive function
  • Evaluates strategic planning
  • Tracks organized searching
  • Utilizes environmental feedback
  • Modulates impulsive responding
Features
Read full description

The W Card Sorting Task (WCST) is used primarily to assess perseveration and abstract thinking, the WCST is also considered a measure of executive function because of its reported sensitivity to frontal lobe dysfunction. Test instruction: Each card has three stimulus parameters (color, mark, and number). Respondents are required to sort cards according to different principles and to alter their approach during test. Results: Results are reported as the number of seconds required to complete the task and number of mistakes; therefore, higher scores reveal greater impairment. As such, the WCST allows you to assess respondent’s strategic planning; organized searching; and ability to utilize environmental feedback to shift cognitive sets, direct behavior toward achieving a goal, and modulate impulsive responding. A rough standard: Score is depends on age or gender however most in 120 seconds, 10 mistakes

Screenshots

HemiStim3 screens
W Card Sorting Test1 screens

Verdict

The call

The clearest difference is review sentiment: HemiStim at 38% against W Card Sorting Test's 0%. HemiStim also leads on update cadence (every 8 months vs every 34 months) and chart position (#200 vs unranked). W Card Sorting Test's advantage is price ($1.99 vs $9.99) and rating (2.6 vs 2.4). On ratings volume, ads, in-app purchases and monetization model 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

HemiStim costs $9.99 and W Card Sorting Test $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

W Card Sorting Test holds the better App Store score, 2.6 against 2.4. Both are backed by a comparable volume of ratings — 5 and 5 respectively. Written reviews complicate that: 38% of HemiStim's written reviews are positive against 0% of W Card Sorting Test's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

HemiStim ships an update every 8 months, W Card Sorting Test every 34 months. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.

Scorecard6 real differences · 5 level
HemiStim versus W Card Sorting Test: the parameters behind the verdict, then further details
ParameterHemiStimW Card Sorting Test
Price$9.99$1.99 — better
Rating2.4 (5 ratings)2.6 (5 ratings) — better
Positive reviews37.5% of reviews — better0.0% of reviews
Number of ratings55
Update frequencyEvery 8 months — betterEvery 34 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank#200 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.08.0 — better
Further details — not scored
Size1 MB1 MB
Age rating4+4+
DeveloperLinsay Associates, LLCTakuya Kawakami

Customer experience

HemiStim

All ratings5 ratings
Positive40.0%
Neutral0.0%
Negative60.0%
Written reviews8 reviews
Positive37.5%
Neutral12.5%
Negative50.0%

W Card Sorting Test

All ratings5 ratings
Positive40.0%
Neutral0.0%
Negative60.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

HemiStim

No in-app purchases

None

W Card Sorting Test

No in-app purchases

Questions

Is HemiStim free?
HemiStim costs $9.99, with no in-app purchases.
Is W Card Sorting Test free?
W Card Sorting Test costs $1.99, with no in-app purchases.
Which has better reviews, HemiStim or W Card Sorting Test?
W Card Sorting Test is rated higher. HemiStim averages 2.4 out of 5 from 5 ratings, while W Card Sorting Test averages 2.6 from 5 ratings.
Do HemiStim or W Card Sorting Test have ads?
Neither HemiStim nor W Card Sorting Test shows ads.
Which is updated more often, HemiStim or W Card Sorting Test?
HemiStim ships an update every 8 months, and W Card Sorting Test every 34 months. Most recently, HemiStim was updated on October 2, 2026 and W Card Sorting Test on October 6, 2026.

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