HemiStim vs W Card Sorting Test
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
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.
- Assesses perseveration and abstract thinking
- Measures executive function
- Evaluates strategic planning
- Tracks organized searching
- Utilizes environmental feedback
- Modulates impulsive responding
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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
Verdict
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
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.
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.
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.
| Parameter | HemiStim | W Card Sorting Test |
|---|---|---|
| Price | $9.99 | $1.99 — better |
| Rating | 2.4 (5 ratings) | 2.6 (5 ratings) — better |
| Positive reviews | 37.5% of reviews — better | 0.0% of reviews |
| Number of ratings | 5 | 5 |
| Update frequency | Every 8 months — better | Every 34 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #200 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 | 8.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Linsay Associates, LLC | Takuya Kawakami |
Customer experience
HemiStim
W Card Sorting Test
In-app purchases
HemiStim
No in-app purchases
W Card Sorting Test
No in-app purchases
Questions
Is HemiStim free?
Is W Card Sorting Test free?
Which has better reviews, HemiStim or W Card Sorting Test?
Do HemiStim or W Card Sorting Test have ads?
Which is updated more often, HemiStim or W Card Sorting Test?
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