Go Narrow Downloads & RevenueGo Narrow: Study Antibiotics · App Store
30 days old
Go Narrow: Study Antibiotics is #45 in Medical Paid in United States and charting in 3 of 30 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
DeveloperJohanna Galaski
CategoryMedical
Price5.99 USD
Released
Rating★ 5.0 (5)
Version1.7
Age rating17+
First seen by us
11 Oct 2026
11 Oct 2026Installs (est.)1k+ worldwide
Go Narrow: Study Antibiotics update history & changes
Last change · 30 events since 9 Oct 2026Full timeline ↓💰Price rise📈Entered the top 10💰Price rise✏️New screenshots✏️Renamed📦Updated to version 1.7📦Updated to version 1.6📈Hit #1🆕First spotted by AppInsider🆕Released on the App Store
Full timeline · 30 events
- 💰Go Narrow: Study Antibiotics: price rise3.99 EUR → 4.99 EUR · DE
- 📈Go Narrow: Study Antibiotics entered the top 10Top Paid · Medical · GB
- 💰Go Narrow: Study Antibiotics: price rise3.99 USD → 5.99 USD · US
- 💰Go Narrow: Study Antibiotics: price rise4.99 CAD → 7.99 CAD · CA
- 💰Go Narrow: Study Antibiotics: price rise5.99 AUD → 9.99 AUD · AU
- ✏️Go Narrow: Study Antibiotics: new screenshots10 screenshots (was 10) · 6 countries
- ✏️Go Narrow: Study Antibiotics: renamedGo Narrow: Antibiotics Game → Go Narrow: Study Antibiotics · 6 countries
- 📦Go Narrow: Study Antibiotics updated to version 1.7• New level types, each marked on the map: Antibiogram (read the lab's report and name the enzyme), Drug cards (hold two or three drugs and swap to the right one), Narrow it and Switch it.
• The Lab is unlocked from the start
• The Book's Show all switch shows every drug and bug, not only the ones you've met.
• Today shows two leaderboards: all time on top, today's below.… more - ✏️Go Narrow: Study Antibiotics: new screenshots10 screenshots (was 10) · GB
- ✏️Go Narrow: Study Antibiotics moved categoryEducation → Medical
- ✏️Go Narrow: Study Antibiotics: new screenshots10 screenshots (was 10) · US, DE
- ✏️Go Narrow: Study Antibiotics: new screenshots10 screenshots (was 10) · IN, CA, AU
- 📦Go Narrow: Study Antibiotics updated to version 1.6• Today's shift has its own page: see today's top three before your shift, and your best run, rank and Share after it. Play again is practice.
• Cell wall Siege: every round now asks only what the cell wall lesson teaches.
• Build the Slide: the line under each bug now tells you to build its slide from memory.… more - 📈Go Narrow: Study Antibiotics hit #1Top Paid · Education · AU
- 📈Go Narrow: Study Antibiotics entered the top 10Top Paid · Medical · AU
- 📈Go Narrow: Study Antibiotics new best rank in the overall chart: #13Top Paid · All Apps · AU
- ✏️Go Narrow: Study Antibiotics: new screenshots10 screenshots (was 9) · AU
- 📈Go Narrow: Study Antibiotics entered the top 10 in 2 chartsTop Paid · Education · AU · Top Paid · Education · CA
- 📈Go Narrow: Study Antibiotics new best rank in the overall chart: #19Top Paid · All Apps · AU
- ✏️Go Narrow: Study Antibiotics: new screenshots10 screenshots (was 10) · 4 countries
- 📦Go Narrow: Study Antibiotics updated to version 1.5• Night Shift leaderboards: Finish Today's shift and see your rank, challenge your colleagues
• Culture results: in some levels the culture comes back while you play, and you choose the drug to narrow to.
• Antibiogram levels: read the antibiogram, name the resistance enzyme, then narrow the therapy.
• Leave the map alone for a moment and see what your bug gets up to.… more - ✏️Go Narrow: Study Antibiotics: new screenshots10 screenshots (was 9) · IN
- 📦Go Narrow: Study Antibiotics: now updating weekly4 updates in 30 days, after a quiet two months
- 📈Go Narrow: Study Antibiotics new best rank in the overall chart: #118Top Paid · All Apps · CA
- ✏️Go Narrow: Study Antibiotics: new screenshots10 screenshots (was 9) · 4 countries
- 📦Go Narrow: Study Antibiotics updated to version 1.4• Night Shift leaderboards: play Today's shift and see how your score compares with other players in Game Center. Everyone gets the same plate each day, and a second leaderboard keeps the best scores of all time.
• Quick tour: a short walk through the game for new players.
• Culture results: in some levels the culture result comes back while you play, and you choose the drug to narrow to.
• Antibiogram levels: read the antibiogram, name the resistance enzyme, then narrow the therapy.
• Two new lessons: β-lactamases, and CRAB with sulbactam-durlobactam.
• A clearer Study: one numbered path for each drug target, with rings that fill as you go. You can also revise by pathogen or by infection.
• A new walk-through for fosfomycin.
• A calmer look with flat tiles and clearer bug names, content corrections.… more - 📦Go Narrow: Study Antibiotics updated to version 1.2- New: a short Quick tour for first-time players, which you can skip.
- New: the Cystitis drugs walk-through, on fosfomycin, nitrofurantoin and pivmecillinam.
- Fixes in the Cell wall lesson and on the map.
Thank you for every report and review!… more - 🆕Go Narrow: Study Antibiotics first spotted by AppInsider#54 in Top Paid · Education · Germany
- 📦Go Narrow: Study Antibiotics version 1.1• Animated lessons: watch how antibiotics work, step by step. The cell wall, the ribosome, DNA gyrase, metronidazole, nitrofurantoin, folate synthesis and the cell membrane (daptomycin).
• Animated resistance lessons: MRSA, enterococci and VRE, ESBL and AmpC, carbapenemases and CRAB, and cefiderocol.
• Each lesson ends with a short quiz, and a quick check lets you skip what you already know.
• Every drug class gets a step-by-step walk-through.
• The map now follows drug classes, in the same order as Study.
• Night Shift: a new daily board with a score to beat.
• The Lab: build a Gram stain slide and train your eye at the microscope.
• New bugs: Strep B, S. epidermidis and Citrobacter.
• Spot a mistake? Tap the flag at the top of a page to report it.
• Your progress is now kept more safely on your phone.
• Many fixes, clearer texts and a calmer look.… more - 🆕Go Narrow: Study Antibiotics released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
5.0 ★
5 ratings
Measured
Best rank now
#45
Medical PaidMeasured
New ratings a week
6.7
App Store, 4-week average
Measured
Go Narrow: Study Antibiotics at a glance
AI summary written from our chart and store data, 2026-10-21. It can be wrong: check the numbers above.
A paid educational game for medical students and residents that teaches antibiotic coverage, mechanisms of action, and resistance patterns through interactive culture plate simulations. The app is currently ranking #2 in the Australian Paid Education category and #19 in all Australian paid apps, indicating strong regional traction despite a low total rating count.
Similar apps: Anki, UpToDate, Medscape
Go Narrow: Study Antibiotics on the App Store
App details
App ID
6816657062
Publisher
Johanna Galaski
On the store since
Oct 2026
Under a year
Minimum OS
iOS 15.0+
iPhone 6s and later
Devices
iPhone · iPad
Game Center
Content rating
17+
1 content note below
Languages
1
EN
Size
4 MB
Also listed in
Education
Content notesFrequent/Intense Medical/Treatment Information
Go Narrow: Study Antibiotics downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where Go Narrow: Study Antibiotics's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
Retention · share of new users still active
Day 1
Day 7
Day 30
Time spent · per daily user
Average time spent Pro
min a day
Sessions a day Pro
Time per session Pro
min
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| United States | MedicalPaid | #45 |
 Australia | MedicalPaid | #12 |
| Germany | MedicalPaid | #55 |
| Australia | All AppsPaid | #180 |
Apps near Go Narrow: Study Antibiotics on the chart
Medical Paid, around #45.
Ratings
App Store, worldwide.
Rating
5.0 ★
5 ratings
Measured
Ratings
5
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
6.7
4-week average
Written reviews a week
under 1
US App Store
Lifetime rating
5.0★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
70/100
faster than 84% of Medical apps
New ratings by country (3)
| Country | New ratings a week | Share | Last 2 weeks vs the 2 before |
|---|---|---|---|
| Australia | 3.6 | 54% | – |
| Germany | 1.8 | 27% | – |
| United States | 1.3 | 19% | – |
App Store ratings in the countries we track, 4-week average.
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about Go Narrow: Study Antibiotics
From recent reviews.
About Go Narrow: Study Antibiotics
I'm a microbiology resident, and ever since I studied antibiotics in medical school I've been thinking about how antibiotic coverage could be taught in a fun way. Many medical students, and residents too, really struggle with it. Go Narrow is my answer: a game that teaches which antibiotics cover which bacteria, and why.
Each level is a culture plate. Tap the bacteria your antibiotic covers, leave the ones it doesn't, and use the culture result to choose the narrowest drug that works. Every wrong tap tells you why in one sentence: an enzyme destroys the drug, its target has changed, or the drug can't get in. The pairs you get wrong come back for review until they stick.
Target lessons animate the mechanism of action, from the cell wall and membrane to the ribosome, DNA gyrase and folate synthesis. Resistance lessons show how bacteria fight back: MRSA, VRE, ESBL, AmpC, carbapenemases and CRAB.
In the Lab you learn Gram staining step by step and train your eye for morphology: Klebsiella are Gram-negative rods, staphylococci Gram-positive cocci in clusters, streptococci Gram-positive cocci in chains.
For learning only: real prescribing depends on local resistance, the site of infection and the patient, so always follow your local guidelines.
Each level is a culture plate. Tap the bacteria your antibiotic covers, leave the ones it doesn't, and use the culture result to choose the narrowest drug that works. Every wrong tap tells you why in one sentence: an enzyme destroys the drug, its target has changed, or the drug can't get in. The pairs you get wrong come back for review until they stick.
Target lessons animate the mechanism of action, from the cell wall and membrane to the ribosome, DNA gyrase and folate synthesis. Resistance lessons show how bacteria fight back: MRSA, VRE, ESBL, AmpC, carbapenemases and CRAB.
In the Lab you learn Gram staining step by step and train your eye for morphology: Klebsiella are Gram-negative rods, staphylococci Gram-positive cocci in clusters, streptococci Gram-positive cocci in chains.
For learning only: real prescribing depends on local resistance, the site of infection and the patient, so always follow your local guidelines.
Latest updates
1.7
• New level types, each marked on the map: Antibiogram (read the lab's report and name the enzyme), Drug cards (hold two or three drugs and swap to the right one), Narrow it and Switch it.
• The Lab is unlocked from the start
• The Book's Show all switch shows every drug and bug, not only the ones you've met.
• Today shows two leaderboards: all time on top, today's below.
1.6
• Today's shift has its own page: see today's top three before your shift, and your best run, rank and Share after it. Play again is practice.
• Cell wall Siege: every round now asks only what the cell wall lesson teaches.
• Build the Slide: the line under each bug now tells you to build its slide from memory.
1.5
• Night Shift leaderboards: Finish Today's shift and see your rank, challenge your colleagues
• Culture results: in some levels the culture comes back while you play, and you choose the drug to narrow to.
• Antibiogram levels: read the antibiogram, name the resistance enzyme, then narrow the therapy.
• Leave the map alone for a moment and see what your bug gets up to.
Store changes
What Go Narrow: Study Antibiotics changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Price rise
3.99 EUR → 4.99 EUR
Price rise
3.99 USD → 5.99 USD
Price rise 
4.99 CAD → 7.99 CAD
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