# Hemocytometer Sidekick vs GSA

The clearest difference is in-app purchases: GSA at none against Hemocytometer Sidekick's 5. Hemocytometer Sidekick's advantage is update cadence (every 2 months vs every 6 months). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Hemocytometer Sidekick sells 5 one-off in-app purchases. GSA asks for nothing beyond the download.

Hemocytometer Sidekick ships an update every 2 months, GSA every 6 months. The most recent releases landed on June 4, 2026 and August 13, 2026 respectively.

## The numbers

| Metric | Hemocytometer Sidekick | GSA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (29 ratings)](https://appshunter.io/ios/app/hemocytometer-sidekick/id1341492266/reviews)** | — |
| Number of ratings | **29** | — |
| Positive reviews | 0.0% of reviews | **6.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 43 MB | 12 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Nicholas Bauer](https://appshunter.io/developer/1341492265) | [Umweltbundesamt](https://appshunter.io/developer/583898621) |

## What reviewers say

### Hemocytometer Sidekick

[App page](https://appshunter.io/ios/app/hemocytometer-sidekick/id1341492266)

Streamline cell counting with a hemocytometer. This app automates calculations, offers eyes-free operation with large buttons and sound feedback, and saves your data for easy recording. It supports various chamber types and differential blood counts, making lab work more efficient.

**Highlights:** Automated cell counting, Eyes-free operation, Supports multiple chamber types, Differential blood counting, Data saving and email results, Adjustable chamber depth

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Purchase | $4.99 | one-time |
| Purchase Version 2 | $4.99 | one-time |
| Purchase Version 3 | $4.99 | one-time |
| Purchase Version 4 | $4.99 | one-time |
| Purchase Version 5 | $4.99 | one-time |


### GSA

[App page](https://appshunter.io/ios/app/gsa/id1486352326)

Access comprehensive chemical information for emergency responders and specialists. Search for substances, transport regulations, and hazard data using various identifiers. Tailor information display with different user profiles.

**Highlights:** Chemical substance database, Transport search with visual warning signs, Search by substance name, CAS, or UN number, User-specific profiles for tailored information, Hazard and safety measure details, First aid instructions

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

**In-app purchases:** none


## Frequently asked questions

### Is Hemocytometer Sidekick free?

Hemocytometer Sidekick is free to download, with in-app purchases available.

### Is GSA free?

GSA is free to download, with no in-app purchases.

### Do Hemocytometer Sidekick or GSA have ads?

Neither Hemocytometer Sidekick nor GSA shows ads.

### Which is updated more often, Hemocytometer Sidekick or GSA?

Hemocytometer Sidekick ships an update every 2 months, and GSA every 6 months. Most recently, Hemocytometer Sidekick was updated on June 4, 2026 and GSA on August 13, 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.*