# HemiStim vs Visual Attention Therapy

The clearest difference is review sentiment: Visual Attention Therapy at 92% against HemiStim's 38%. Visual Attention Therapy also leads on rating (4.7 vs 2.4) and ratings volume (486 vs 5). HemiStim's advantage is price ($9.99 vs $19.99) and chart position (#196 vs unranked). On update cadence, ads, in-app purchases and device support there is nothing between them.

HemiStim costs $9.99 and Visual Attention Therapy $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Visual Attention Therapy holds the better App Store score, 4.7 against 2.4. That said, the two scores are not equally well evidenced: Visual Attention Therapy has 486 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 38% of HemiStim's written reviews are positive against 92% of Visual Attention Therapy's.

HemiStim ships an update every 8 months, Visual Attention Therapy every 6 months. The most recent releases landed on September 14, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | HemiStim | Visual Attention Therapy |
| --- | --- | --- |
| Price | **$9.99** | $19.99 |
| Rating | [2.4 (5 ratings)](https://appshunter.io/ios/app/hemistim/id521313664/reviews) | **[4.7 (486 ratings)](https://appshunter.io/ios/app/visual-attention-therapy/id539203206/reviews)** |
| Number of ratings | 5 | **486** |
| Positive reviews | 37.5% of reviews | **92.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 6 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#196** | — |
| Size | 1 MB | 10 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Linsay Associates, LLC](https://appshunter.io/developer/326305565) | [Tactus Therapy Solutions Ltd.](https://appshunter.io/developer/438070002) |

## What reviewers say

### HemiStim

[App page](https://appshunter.io/ios/app/hemistim/id521313664)

**Currently charting:** #196 Top Paid · Medical (US App Store)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Visual Attention Therapy

[App page](https://appshunter.io/ios/app/visual-attention-therapy/id539203206)

This app retrains the brain to scan from left to right, improving reading, concentration, and memory. It features two modes to help individuals with left neglect and professionals assess and treat visual attention deficits.

**Highlights:** Left-to-right scanning training, Visual attention deficit assessment, Target finding exercises, Immediate feedback with cues, Automated scoring and reports, Adjustable difficulty and layouts, Printable exercise options

**In-app purchases:** none


## Frequently asked questions

### Is HemiStim free?

HemiStim costs $9.99, with no in-app purchases.

### Is Visual Attention Therapy free?

Visual Attention Therapy costs $19.99, with no in-app purchases.

### Which has better reviews, HemiStim or Visual Attention Therapy?

Visual Attention Therapy is rated higher. HemiStim averages 2.4 out of 5 from 5 ratings, while Visual Attention Therapy averages 4.7 from 486 ratings.

### Do HemiStim or Visual Attention Therapy have ads?

Neither HemiStim nor Visual Attention Therapy shows ads.

### Which is updated more often, HemiStim or Visual Attention Therapy?

HemiStim ships an update every 8 months, and Visual Attention Therapy every 6 months. Most recently, HemiStim was updated on September 14, 2026 and Visual Attention Therapy on September 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*