# HemiStim vs Saffa Compounding Pharmacy

The clearest difference is price: Saffa Compounding Pharmacy at Free against HemiStim's $9.99. Saffa Compounding Pharmacy also leads on update cadence (every 3 weeks vs every 8 months). HemiStim's advantage is chart position (#200 vs unranked) and iOS requirement (12.0 vs 15.1). On ads, in-app purchases and device support there is nothing between them.

Saffa Compounding Pharmacy is free to download; HemiStim costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

HemiStim ships an update every 8 months, Saffa Compounding Pharmacy every 3 weeks. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | HemiStim | Saffa Compounding Pharmacy |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[2.4 (5 ratings)](https://appshunter.io/ios/app/hemistim/id521313664/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 37.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Best chart rank | **#200** | — |
| Size | 1 MB | 37 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Linsay Associates, LLC](https://appshunter.io/developer/326305565) | [Tulsa Saffa LLC](https://appshunter.io/developer/1848405685) |

## What reviewers say

### HemiStim

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

**Currently charting:** #200 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


### Saffa Compounding Pharmacy

[App page](https://appshunter.io/ios/app/saffa-compounding-pharmacy/id6754465945)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HemiStim free?

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

### Is Saffa Compounding Pharmacy free?

Saffa Compounding Pharmacy is free to download, with no in-app purchases.

### Do HemiStim or Saffa Compounding Pharmacy have ads?

Neither HemiStim nor Saffa Compounding Pharmacy shows ads.

### Which is updated more often, HemiStim or Saffa Compounding Pharmacy?

HemiStim ships an update every 8 months, and Saffa Compounding Pharmacy every 3 weeks. Most recently, HemiStim was updated on October 2, 2026 and Saffa Compounding Pharmacy on October 10, 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.*