Comparison

HemiStim vs Sonorias

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
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

Sonorias

This specialized music player is designed for individuals undergoing JIAS training. It connects to dedicated servers, allowing users to download and listen to personalized audio tracks generated by their JIAS provider via headphones.

Highlights
  • JIAS training specific player
  • Connects to Sonorias servers
  • Download personalized music
  • Offline listening
  • Headphone compatible
Read full description

Sonorias JIAS Music Player is a specialized player application for clients undertaking JIAS (Johansen Individualized Auditory Stimulation) training. Sonorias JIAS Music Player application connects only to Sonorias servers. By entering your unique PIN code, it allows you to download music generated by your JIAS provider for offline listening. You are able to listen your individualized tracks via connected headphones.

Screenshots

HemiStim3 screens
Sonorias4 screens

Verdict

The call

The clearest difference is review sentiment: HemiStim at 38% against Sonorias's 20%. HemiStim also leads on price ($9.99 vs $11.99). On update cadence, 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 Sonorias $11.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

HemiStim ships an update every 8 months, Sonorias every 10 months. The most recent releases landed on October 26, 2026 and October 29, 2026 respectively.

Scorecard2 real differences · 8 level
HemiStim versus Sonorias: the parameters behind the verdict, then further details
ParameterHemiStimSonorias
Price$9.99 — better$11.99
Rating2.4 (5 ratings) — better—
Positive reviews37.5% of reviews — better20.0% of reviews
Number of ratings5 — better—
Update frequencyEvery 8 months — betterEvery 10 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size1 MB7 MB
Age rating4+4+
DeveloperLinsay Associates, LLCInovatrix s. r. o

Customer experience

HemiStim

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

Sonorias

Written reviews5 reviews
Positive20.0%
Neutral0.0%
Negative80.0%

In-app purchases

None

HemiStim

No in-app purchases

None

Sonorias

No in-app purchases

Questions

Is HemiStim free?
HemiStim costs $9.99, with no in-app purchases.
Is Sonorias free?
Sonorias costs $11.99, with no in-app purchases.
Do HemiStim or Sonorias have ads?
Neither HemiStim nor Sonorias shows ads.
Which is updated more often, HemiStim or Sonorias?
HemiStim ships an update every 8 months, and Sonorias every 10 months. Most recently, HemiStim was updated on October 26, 2026 and Sonorias on October 29, 2026.

Other comparisons