# QABA vs Ionized Calcium Calculator

The clearest difference is update cadence: Ionized Calcium Calculator at every 4 days against QABA's every 34 months. QABA's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 18.2). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

QABA ships an update every 34 months, Ionized Calcium Calculator every 4 days. The most recent releases landed on October 20, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | QABA | Ionized Calcium Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/qaba/id872471322/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 91.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 34 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 5 MB | 1 MB |
| Requires iOS | **12.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Calum Donald](https://appshunter.io/developer/872471325) | [Ernie Yap](https://appshunter.io/developer/1806950808) |

## 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


### Ionized Calcium Calculator

[App page](https://appshunter.io/ios/app/ionized-calcium-calculator/id6756215675)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is QABA free?

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

### Is Ionized Calcium Calculator free?

Ionized Calcium Calculator is free to download, with no in-app purchases.

### Do QABA or Ionized Calcium Calculator have ads?

Neither QABA nor Ionized Calcium Calculator shows ads.

### Which is updated more often, QABA or Ionized Calcium Calculator?

QABA ships an update every 34 months, and Ionized Calcium Calculator every 4 days. Most recently, QABA was updated on October 20, 2026 and Ionized Calcium Calculator on October 28, 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.*