Comparison

Hemocytometer Sidekick vs GSA

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Hemocytometer Sidekick

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
Read full description

Make cell counting with a hemocytometer effortless! You know the drill--time to count cells for your experiment. Get out the hemocytometer and squeaky mechanical counter, prepare your dilution, fill the chamber, then look under the scope and start pushing the lever. Get to the end of a square, write down the count, reset the counter, and repeat. Finally, try to remember the right calculation, then write down the result. What if you didn't need the squeaky counter? The scrap paper? A manual calculator? Sure, you *could* get an expensive, fancy cell counter with wasteful disposables. But why do that when a $5 app is nearly as good? Hemocytometer Sidekick eliminates those annoyances. Record one or two counters for all samples with automatic calculations (including viability, blood counter), and use the full grid or the center square. Data is saved for you, so you can record it in your notebook at your convenience. Hemocytometer Sidekick, designed from the ground up by a biologist, will make your life in the lab so much easier, that I'm giving you 10 measurements for free! Features: - Optimized for eyes-free operation (large buttons, sounds, vibration) - Use both chambers and zoom in to inner grid - Chamber types: Basic, Improved Neubauer, Bürker-Türk/Thoma, Fuchs-Rosenthal, Jessen, Spiers-Levy, Malassez, Makler - One or two counters available, plus viability and blood (RBC, WBC, Platelet) counter - Differential blood counter for many white blood cell types - Pause and sound every 100 blood cells counted - Automatic calculations - Adjustable chamber depth - Email results - Prompt support

About

GSA

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
Read full description

Die GSAapp basiert auf dem Datenbestand des ChemInfo-Systems, welches durch ein Bund-Länder-Kooperationsprojekt betrieben und gepflegt wird. In der GSAapp können mittels unterschiedlicher Profile für Feuerwehr, Fachberater, Rettungsdienst und THW intuitiv Informationen von etwa 40 000 Stoffen überprüft werden. Die GSAapp bekommen Sie mit einem Demodatenbestand. Damit werden die Funktionen der GSAapp verdeutlicht. Wenn Sie berechtigter Nutzer von ChemInfo sind, können Sie kostenlos den kompletten Datenbestand der Gefahrstoffschnellauskunft herunterladen. Eine kostenfreie Registrierung für Behördenmitarbeiter und Einsatzkräfte ist hier möglich: http://www.chemikalieninfo.de/gsaapp.htm Die GSAapp ist unterteilt in eine Stoff- und Transportsuche. Mit der Transportsuche kann mittels Eingabe von Suchparametern in eine visualisierte Warntafel nach rechtlichen Regelungen und Gefahren von Transportgütern im Allgemeinen gesucht werden. Über die Textsuche können chemische Eigenschaften zu einzelnen Stoffen recherchiert werden. Zur Eingabe und Suche dienen Stoffnamen, CAS-Nummern oder UN-Nummern. Je nach eingestelltem Profil werden die gefundenen Informationen aufbereitet in unterschiedlichen Tabs angezeigt. Enthaltene Informationen sind u.a. allgemeine Stoffeigenschaften, Gefahren und Maßnahmen sowie Schutz- und Erste-Hilfe-Hinweise.

Screenshots

Hemocytometer Sidekick4 screens
GSA4 screens

Verdict

The call

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.

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

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

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Hemocytometer Sidekick versus GSA: the parameters behind the verdict, then further details
ParameterHemocytometer SidekickGSA
PriceFreeFree
Rating4.6 (29 ratings) — better—
Positive reviews0.0% of reviews6.3% of reviews — better
Number of ratings29 — better—
Update frequencyEvery 2 months — betterEvery 6 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.6
Further details — not scored
Size43 MB12 MB
Age rating4+12+
DeveloperNicholas BauerUmweltbundesamt

Customer experience

Hemocytometer Sidekick

All ratings29 ratings
Positive93.1%
Neutral3.4%
Negative3.4%
Written reviews3 reviews
Positive0.0%
Neutral33.3%
Negative66.7%

GSA

Written reviews16 reviews
Positive6.3%
Neutral25.0%
Negative68.8%

In-app purchases

5 purchases

Hemocytometer Sidekick

One-time5
  • Purchase$4.99
  • Purchase Version 2$4.99
  • Purchase Version 3$4.99
Show 2 more
  • Purchase Version 4$4.99
  • Purchase Version 5$4.99
None

GSA

No in-app purchases

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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