# HemiStim vs Visual Vertical Lite

The clearest difference is rating: HemiStim at 2.4 against Visual Vertical Lite's 2.0. HemiStim also leads on update cadence (every 8 months vs every 42 months) and chart position (#196 vs unranked). Visual Vertical Lite's advantage is price ($5.99 vs $9.99). On ads, in-app purchases and monetization model there is nothing between them.

HemiStim costs $9.99 and Visual Vertical Lite $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

HemiStim holds the better App Store score, 2.4 against 2.0. That said, the two scores are not equally well evidenced: HemiStim has 5 ratings behind it against 1, so its average is the more settled of the two.

HemiStim ships an update every 8 months, Visual Vertical Lite every 42 months. The most recent releases landed on September 14, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | HemiStim | Visual Vertical Lite |
| --- | --- | --- |
| Price | $9.99 | **$5.99** |
| Rating | **[2.4 (5 ratings)](https://appshunter.io/ios/app/hemistim/id521313664/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/visual-vertical-lite/id842449570/reviews) |
| Number of ratings | **5** | 1 |
| Positive reviews | 37.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 42 months |
| Monetization | Paid | Paid |
| Best chart rank | **#196** | — |
| Size | 1 MB | 6 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Linsay Associates, LLC](https://appshunter.io/developer/326305565) | [Clear Health Media](https://appshunter.io/developer/419017749) |

## 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 Vertical Lite

[App page](https://appshunter.io/ios/app/visual-vertical-lite/id842449570)

This medical app offers a quick, accurate, and affordable method for measuring subjective visual vertical in patients. It simplifies a previously complex and expensive diagnostic process, making it accessible for neurologists and vestibular rehabilitation specialists.

**Highlights:** Measures subjective visual vertical, Accurate and low-cost readings, Uses iPhone/iPad for testing, Suitable for neurology and vestibular rehab, Tests otolithic function, Single readings for each eye

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is HemiStim free?

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

### Is Visual Vertical Lite free?

Visual Vertical Lite costs $5.99, with no in-app purchases.

### Which has better reviews, HemiStim or Visual Vertical Lite?

HemiStim is rated higher. HemiStim averages 2.4 out of 5 from 5 ratings, while Visual Vertical Lite averages 2.0 from 1 ratings.

### Do HemiStim or Visual Vertical Lite have ads?

Neither HemiStim nor Visual Vertical Lite shows ads.

### Which is updated more often, HemiStim or Visual Vertical Lite?

HemiStim ships an update every 8 months, and Visual Vertical Lite every 42 months. Most recently, HemiStim was updated on September 14, 2026 and Visual Vertical Lite 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.*