# QABA vs Go Narrow

The clearest difference is price: QABA at Free against Go Narrow's $5.99. QABA also leads on iOS requirement (12.0 vs 15.0). Go Narrow's advantage is update cadence (every 2 days vs every 34 months) and chart position (#128 vs unranked). On rating, ratings volume, ads and in-app purchases there is nothing between them.

QABA is free to download; Go Narrow costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for QABA against 5.0 for Go Narrow. Both are backed by a comparable volume of ratings — 3 and 5 respectively. Written reviews are what separate them: 92% of QABA's written reviews are positive against 100% of Go Narrow's.

QABA ships an update every 34 months, Go Narrow every 2 days. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | QABA | Go Narrow |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/qaba/id872471322/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/go-narrow-study-antibiotics/id6816657062/reviews) |
| Number of ratings | 3 | **5** |
| Positive reviews | 91.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 34 months | **Every 2 days** |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#128** |
| Size | 5 MB | 4 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Calum Donald](https://appshunter.io/developer/872471325) | [Johanna Galaski](https://appshunter.io/developer/6816657064) |

## What reviewers say

### QABA

[App page](https://appshunter.io/ios/app/qaba/id872471322)

This medical app provides quantitative acid-base analysis by allowing users to input blood results. It calculates key variables like Strong Ion Difference and Net Unmeasured Ions, offering a color-coded results screen and a user guide. It's designed for medical professionals to aid in clinical decision-making.

**Highlights:** Quantitative Acid Base Analysis, Blood result input, Calculates SID, NUI, Atot, Color-coded results screen, Includes User Guide, Supports additional lab values

**Features:** macOS Compatibility

**In-app purchases:** none


### Go Narrow

[App page](https://appshunter.io/ios/app/go-narrow-study-antibiotics/id6816657062)

**Currently charting:** #128 Top Paid · Medical (US App Store)

This educational game helps medical students and residents learn antibiotic coverage for various bacteria. It uses interactive levels simulating culture plates and animated lessons on mechanisms of action and resistance. The app also includes a lab section for practicing Gram staining and morphology identification.

**Highlights:** Interactive culture plate levels, Learn antibiotic-bacteria coverage, Animated mechanisms of action, Resistance mechanism lessons, Gram staining and morphology practice, Targeted review of incorrect answers

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is QABA free?

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

### Is Go Narrow free?

Go Narrow costs $5.99, with no in-app purchases.

### Which has better reviews, QABA or Go Narrow?

QABA and Go Narrow are both rated 5.0 out of 5 on the App Store, from 3 and 5 ratings respectively.

### Do QABA or Go Narrow have ads?

Neither QABA nor Go Narrow shows ads.

### Which is updated more often, QABA or Go Narrow?

QABA ships an update every 34 months, and Go Narrow every 2 days. Most recently, QABA was updated on November 1, 2026 and Go Narrow on November 6, 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.*